Revert dors commit

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/BukkitMain.java

@@ -72,7 +72,12 @@ public final class BukkitMain extends JavaPlugin implements Listener, IPlotMain
                 pluginsField.setAccessible(true);
                 lookupNamesField.setAccessible(true);
                 List<Plugin> plugins = (List<Plugin>) pluginsField.get(manager);
-                plugins.removeIf(plugin -> plugin.getName().startsWith("PlotMe"));
+                Iterator<Plugin> iter = plugins.iterator();
+                while (iter.hasNext()) {
+                    if (iter.next().getName().startsWith("PlotMe")) {
+                        iter.remove();
+                    }
+                }
                 Map<String, Plugin> lookupNames =
                     (Map<String, Plugin>) lookupNamesField.get(manager);
                 lookupNames.remove("PlotMe");
@@ -196,8 +201,8 @@ public final class BukkitMain extends JavaPlugin implements Listener, IPlotMain
                 this.methodUnloadChunk0 = classCraftWorld.getRealClass()
                     .getDeclaredMethod("unloadChunk0", int.class, int.class, boolean.class);
                 this.methodUnloadChunk0.setAccessible(true);
-            } catch (Throwable e) {
-                e.printStackTrace();
+            } catch (Throwable ignore) {
+                ignore.printStackTrace();
             }
         }
         final PlotAreaManager manager = PlotSquared.get().getPlotAreaManager();
@@ -221,7 +226,7 @@ public final class BukkitMain extends JavaPlugin implements Listener, IPlotMain
                 if (id != null) {
                     final Plot plot = area.getOwnedPlot(id);
                     if (plot != null) {
-                        if (PlotPlayer.wrap(plot.guessOwner()) == null) {
+                        if (PlotPlayer.wrap(plot.owner) == null) {
                             if (world.getKeepSpawnInMemory()) {
                                 world.setKeepSpawnInMemory(false);
                                 return;
@@ -646,8 +651,10 @@ public final class BukkitMain extends JavaPlugin implements Listener, IPlotMain
     @Override public boolean initPlotMeConverter() {
         if (new LikePlotMeConverter("PlotMe").run(new ClassicPlotMeConnector())) {
             return true;
-        } else
-            return new LikePlotMeConverter("PlotMe").run(new PlotMeConnector_017());
+        } else if (new LikePlotMeConverter("PlotMe").run(new PlotMeConnector_017())) {
+            return true;
+        }
+        return false;
     }
 
     @Override @Nullable public GeneratorWrapper<?> getGenerator(@NonNull final String world,

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/chat/ArrayWrapper.java

@@ -26,7 +26,7 @@ public final class ArrayWrapper<E> {
      *
      * @param elements The elements of the array.
      */
-    @SafeVarargs public ArrayWrapper(E... elements) {
+    public ArrayWrapper(E... elements) {
         setArray(elements);
     }
 

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/chat/MessagePart.java

@@ -56,7 +56,7 @@ final class MessagePart implements JsonRepresentedObject, ConfigurationSerializa
     String clickActionData = null;
     String hoverActionName = null;
     JsonRepresentedObject hoverActionData = null;
-    TextualComponent text;
+    TextualComponent text = null;
     String insertionData = null;
     ArrayList<JsonRepresentedObject> translationReplacements = new ArrayList<>();
 
@@ -123,7 +123,8 @@ final class MessagePart implements JsonRepresentedObject, ConfigurationSerializa
             if (insertionData != null) {
                 json.name("insertion").value(insertionData);
             }
-            if (translationReplacements.size() > 0 && TextualComponent.isTranslatableText(text)) {
+            if (translationReplacements.size() > 0 && text != null && TextualComponent
+                .isTranslatableText(text)) {
                 json.name("with").beginArray();
                 for (JsonRepresentedObject obj : translationReplacements) {
                     obj.writeJson(json);

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/chat/Reflection.java

@@ -181,13 +181,13 @@ public final class Reflection {
      */
     public synchronized static Method getMethod(Class<?> clazz, String name, Class<?>... args) {
         if (!_loadedMethods.containsKey(clazz)) {
-            _loadedMethods.put(clazz, new HashMap<>());
+            _loadedMethods.put(clazz, new HashMap<String, Map<ArrayWrapper<Class<?>>, Method>>());
         }
 
         Map<String, Map<ArrayWrapper<Class<?>>, Method>> loadedMethodNames =
             _loadedMethods.get(clazz);
         if (!loadedMethodNames.containsKey(name)) {
-            loadedMethodNames.put(name, new HashMap<>());
+            loadedMethodNames.put(name, new HashMap<ArrayWrapper<Class<?>>, Method>());
         }
 
         Map<ArrayWrapper<Class<?>>, Method> loadedSignatures = loadedMethodNames.get(name);

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/chat/TextualComponent.java

@@ -207,7 +207,7 @@ public abstract class TextualComponent implements Cloneable {
             this.value = value;
         }
 
-        @Override public TextualComponent clone() {
+        @Override public TextualComponent clone() throws CloneNotSupportedException {
             // Since this is a private and final class, we can just reinstantiate this class instead of casting super.clone
             return new ArbitraryTextTypeComponent(getKey(), getValue());
         }

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/commands/DebugUUID.java

@@ -171,114 +171,126 @@ import java.util.Map.Entry;
         }
 
         MainUtil.sendMessage(player, "&7 - Replacing cache");
-        TaskManager.runTaskAsync(() -> {
-            for (Entry<UUID, UUID> entry : uCMap.entrySet()) {
-                String name = UUIDHandler.getName(entry.getKey());
-                if (name != null) {
-                    UUIDHandler.add(new StringWrapper(name), entry.getValue());
+        TaskManager.runTaskAsync(new Runnable() {
+            @Override public void run() {
+                for (Entry<UUID, UUID> entry : uCMap.entrySet()) {
+                    String name = UUIDHandler.getName(entry.getKey());
+                    if (name != null) {
+                        UUIDHandler.add(new StringWrapper(name), entry.getValue());
+                    }
                 }
-            }
 
-            MainUtil.sendMessage(player, "&7 - Scanning for applicable files (uuids.txt)");
+                MainUtil.sendMessage(player, "&7 - Scanning for applicable files (uuids.txt)");
+
+                File file = new File(PlotSquared.get().IMP.getDirectory(), "uuids.txt");
+                if (file.exists()) {
+                    try {
+                        List<String> lines =
+                            Files.readAllLines(file.toPath(), StandardCharsets.UTF_8);
+                        for (String line : lines) {
+                            try {
+                                line = line.trim();
+                                if (line.isEmpty()) {
+                                    continue;
+                                }
+                                line = line.replaceAll("[\\|][0-9]+[\\|][0-9]+[\\|]", "");
+                                String[] split = line.split("\\|");
+                                String name = split[0];
+                                if (name.isEmpty() || name.length() > 16 || !StringMan
+                                    .isAlphanumericUnd(name)) {
+                                    continue;
+                                }
+                                UUID old = currentUUIDWrapper.getUUID(name);
+                                if (old == null) {
+                                    continue;
+                                }
+                                UUID now = newWrapper.getUUID(name);
+                                UUIDHandler.add(new StringWrapper(name), now);
+                                uCMap.put(old, now);
+                                uCReverse.put(now, old);
+                            } catch (Exception e2) {
+                                e2.printStackTrace();
+                            }
+                        }
+                    } catch (IOException e) {
+                        e.printStackTrace();
+                    }
+                }
+
+                MainUtil.sendMessage(player, "&7 - Replacing wrapper");
+                UUIDHandler.setUUIDWrapper(newWrapper);
+
+                MainUtil.sendMessage(player, "&7 - Updating plot objects");
+
+                for (Plot plot : PlotSquared.get().getPlots()) {
+                    UUID value = uCMap.get(plot.owner);
+                    if (value != null) {
+                        plot.owner = value;
+                    }
+                    plot.getTrusted().clear();
+                    plot.getMembers().clear();
+                    plot.getDenied().clear();
+                }
+
+                MainUtil.sendMessage(player, "&7 - Deleting database");
+                boolean result = DBFunc.deleteTables();
+
+                MainUtil.sendMessage(player, "&7 - Creating tables");
 
-            File file = new File(PlotSquared.get().IMP.getDirectory(), "uuids.txt");
-            if (file.exists()) {
                 try {
-                    List<String> lines = Files.readAllLines(file.toPath(), StandardCharsets.UTF_8);
-                    for (String line : lines) {
-                        try {
-                            line = line.trim();
-                            if (line.isEmpty()) {
-                                continue;
+                    DBFunc.createTables();
+                    if (!result) {
+                        MainUtil.sendMessage(player, "&cConversion failed! Attempting recovery");
+                        for (Plot plot : PlotSquared.get().getPlots()) {
+                            UUID value = uCReverse.get(plot.owner);
+                            if (value != null) {
+                                plot.owner = value;
                             }
-                            line = line.replaceAll("[\\|][0-9]+[\\|][0-9]+[\\|]", "");
-                            String[] split = line.split("\\|");
-                            String name = split[0];
-                            if (name.isEmpty() || name.length() > 16 || !StringMan
-                                .isAlphanumericUnd(name)) {
-                                continue;
-                            }
-                            UUID old = currentUUIDWrapper.getUUID(name);
-                            if (old == null) {
-                                continue;
-                            }
-                            UUID now = newWrapper.getUUID(name);
-                            UUIDHandler.add(new StringWrapper(name), now);
-                            uCMap.put(old, now);
-                            uCReverse.put(now, old);
-                        } catch (Exception e2) {
-                            e2.printStackTrace();
                         }
+                        DBFunc.createPlotsAndData(new ArrayList<>(PlotSquared.get().getPlots()),
+                            new Runnable() {
+                                @Override public void run() {
+                                    MainUtil.sendMessage(player, "&6Recovery was successful!");
+                                }
+                            });
+                        return;
                     }
-                } catch (IOException e) {
+                } catch (Exception e) {
                     e.printStackTrace();
-                }
-            }
-
-            MainUtil.sendMessage(player, "&7 - Replacing wrapper");
-            UUIDHandler.setUUIDWrapper(newWrapper);
-
-            MainUtil.sendMessage(player, "&7 - Updating plot objects");
-
-            for (Plot plot : PlotSquared.get().getPlots()) {
-                UUID value = uCMap.get(plot.guessOwner());
-                if (value != null) {
-                    plot.setOwner(value);
-                }
-                plot.getTrusted().clear();
-                plot.getMembers().clear();
-                plot.getDenied().clear();
-            }
-
-            MainUtil.sendMessage(player, "&7 - Deleting database");
-            boolean result = DBFunc.deleteTables();
-
-            MainUtil.sendMessage(player, "&7 - Creating tables");
-
-            try {
-                DBFunc.createTables();
-                if (!result) {
-                    MainUtil.sendMessage(player, "&cConversion failed! Attempting recovery");
-                    for (Plot plot : PlotSquared.get().getPlots()) {
-                        UUID value = uCReverse.get(plot.guessOwner());
-                        if (value != null) {
-                            plot.setOwner(value);
-                        }
-                    }
-                    DBFunc.createPlotsAndData(new ArrayList<>(PlotSquared.get().getPlots()),
-                        () -> MainUtil.sendMessage(player, "&6Recovery was successful!"));
                     return;
                 }
-            } catch (Exception e) {
-                e.printStackTrace();
-                return;
-            }
 
-            if (newWrapper instanceof OfflineUUIDWrapper) {
-                PlotSquared.get().worlds.set("UUID.force-lowercase", false);
-                PlotSquared.get().worlds.set("UUID.offline", true);
-            } else if (newWrapper instanceof DefaultUUIDWrapper) {
-                PlotSquared.get().worlds.set("UUID.force-lowercase", false);
-                PlotSquared.get().worlds.set("UUID.offline", false);
-            }
-            try {
-                PlotSquared.get().worlds.save(PlotSquared.get().worldsFile);
-            } catch (IOException ignored) {
+                if (newWrapper instanceof OfflineUUIDWrapper) {
+                    PlotSquared.get().worlds.set("UUID.force-lowercase", false);
+                    PlotSquared.get().worlds.set("UUID.offline", true);
+                } else if (newWrapper instanceof DefaultUUIDWrapper) {
+                    PlotSquared.get().worlds.set("UUID.force-lowercase", false);
+                    PlotSquared.get().worlds.set("UUID.offline", false);
+                }
+                try {
+                    PlotSquared.get().worlds.save(PlotSquared.get().worldsFile);
+                } catch (IOException ignored) {
+                    MainUtil.sendMessage(player,
+                        "Could not save configuration. It will need to be manual set!");
+                }
+
+                MainUtil.sendMessage(player, "&7 - Populating tables");
+
+                TaskManager.runTaskAsync(new Runnable() {
+                    @Override public void run() {
+                        ArrayList<Plot> plots = new ArrayList<>(PlotSquared.get().getPlots());
+                        DBFunc.createPlotsAndData(plots, new Runnable() {
+                            @Override public void run() {
+                                MainUtil.sendMessage(player, "&aConversion complete!");
+                            }
+                        });
+                    }
+                });
+
+                MainUtil.sendMessage(player, "&aIt is now safe for players to join");
                 MainUtil.sendMessage(player,
-                    "Could not save configuration. It will need to be manual set!");
+                    "&cConversion is still in progress, you will be notified when it is complete");
             }
-
-            MainUtil.sendMessage(player, "&7 - Populating tables");
-
-            TaskManager.runTaskAsync(() -> {
-                ArrayList<Plot> plots = new ArrayList<>(PlotSquared.get().getPlots());
-                DBFunc.createPlotsAndData(plots,
-                    () -> MainUtil.sendMessage(player, "&aConversion complete!"));
-            });
-
-            MainUtil.sendMessage(player, "&aIt is now safe for players to join");
-            MainUtil.sendMessage(player,
-                "&cConversion is still in progress, you will be notified when it is complete");
         });
         return true;
     }

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/database/plotme/ClassicPlotMeConnector.java

@@ -66,13 +66,13 @@ public class ClassicPlotMeConnector extends APlotMeConnector {
             String name = resultSet.getString("owner");
             String world = LikePlotMeConverter.getWorld(resultSet.getString("world"));
             if (!plots.containsKey(world)) {
-                plots.put(world, new HashMap<>());
+                plots.put(world, new HashMap<PlotId, Plot>());
                 if (merge) {
                     int plot = PlotSquared.get().worlds.getInt("worlds." + world + ".plot.size");
                     int path = PlotSquared.get().worlds.getInt("worlds." + world + ".road.width");
                     plotWidth.put(world, plot);
                     roadWidth.put(world, path);
-                    merges.put(world, new HashMap<>());
+                    merges.put(world, new HashMap<PlotId, boolean[]>());
                 }
             }
             if (merge) {

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/database/plotme/LikePlotMeConverter.java

@@ -48,7 +48,7 @@ public class LikePlotMeConverter {
 
     private void sendMessage(String message) {
         PlotSquared
-            .debug("&3PlotMe&8->&3" + PlotSquared.get().IMP.getPluginName() + "&8: &7" + message);
+            .debug("&3PlotMe&8->&3" + PlotSquared.imp().getPluginName() + "&8: &7" + message);
     }
 
     public String getPlotMePath() {
@@ -97,7 +97,7 @@ public class LikePlotMeConverter {
                 return;
             }
             String content = new String(Files.readAllBytes(path), StandardCharsets.UTF_8);
-            String pluginName = PlotSquared.get().IMP.getPluginName();
+            String pluginName = PlotSquared.imp().getPluginName();
             content = content.replace("PlotMe-DefaultGenerator", pluginName);
             content = content.replace("PlotMe", pluginName);
             content = content.replace("AthionPlots", pluginName);
@@ -220,8 +220,8 @@ public class LikePlotMeConverter {
                     for (String world : allWorlds) {
                         copyConfig(plotmeDgYml, world);
                     }
-                } catch (IOException e) {
-                    e.printStackTrace();
+                } catch (IOException ignored) {
+                    ignored.printStackTrace();
                 }
             }
             for (Entry<String, HashMap<PlotId, Plot>> entry : plots.entrySet()) {
@@ -266,21 +266,23 @@ public class LikePlotMeConverter {
             sendMessage("Creating plot DB");
             Thread.sleep(1000);
             final AtomicBoolean done = new AtomicBoolean(false);
-            DBFunc.createPlotsAndData(createdPlots, () -> {
-                if (done.get()) {
-                    done();
-                    sendMessage("&aDatabase conversion is now complete!");
-                    PlotSquared.debug("&c - Stop the server");
-                    PlotSquared.debug(
-                        "&c - Disable 'plotme-converter' and 'plotme-convert.cache-uuids' in the settings.yml");
-                    PlotSquared.debug(
-                        "&c - Correct any generator settings that haven't copied to 'settings.yml' properly");
-                    PlotSquared.debug("&c - Start the server");
-                    PlotSquared.get().setPlots(DBFunc.getPlots());
-                } else {
-                    sendMessage(
-                        "&cPlease wait until database conversion is complete. You will be notified with instructions when this happens!");
-                    done.set(true);
+            DBFunc.createPlotsAndData(createdPlots, new Runnable() {
+                @Override public void run() {
+                    if (done.get()) {
+                        done();
+                        sendMessage("&aDatabase conversion is now complete!");
+                        PlotSquared.debug("&c - Stop the server");
+                        PlotSquared.debug(
+                            "&c - Disable 'plotme-converter' and 'plotme-convert.cache-uuids' in the settings.yml");
+                        PlotSquared.debug(
+                            "&c - Correct any generator settings that haven't copied to 'settings.yml' properly");
+                        PlotSquared.debug("&c - Start the server");
+                        PlotSquared.get().setPlots(DBFunc.getPlots());
+                    } else {
+                        sendMessage(
+                            "&cPlease wait until database conversion is complete. You will be notified with instructions when this happens!");
+                        done.set(true);
+                    }
                 }
             });
             sendMessage("Saving configuration...");
@@ -289,88 +291,93 @@ public class LikePlotMeConverter {
             } catch (IOException ignored) {
                 sendMessage(" - &cFailed to save configuration.");
             }
-            TaskManager.runTask(() -> {
-                try {
-                    boolean mv = false;
-                    boolean mw = false;
-                    if ((Bukkit.getPluginManager().getPlugin("Multiverse-Core") != null) && Bukkit
-                        .getPluginManager().getPlugin("Multiverse-Core").isEnabled()) {
-                        mv = true;
-                    } else if ((Bukkit.getPluginManager().getPlugin("MultiWorld") != null) && Bukkit
-                        .getPluginManager().getPlugin("MultiWorld").isEnabled()) {
-                        mw = true;
-                    }
-                    for (String worldName : worlds) {
-                        World world = Bukkit.getWorld(getWorld(worldName));
-                        if (world == null) {
-                            sendMessage("&cInvalid world in PlotMe configuration: " + worldName);
-                            continue;
+            TaskManager.runTask(new Runnable() {
+                @Override public void run() {
+                    try {
+                        boolean mv = false;
+                        boolean mw = false;
+                        if ((Bukkit.getPluginManager().getPlugin("Multiverse-Core") != null)
+                            && Bukkit.getPluginManager().getPlugin("Multiverse-Core").isEnabled()) {
+                            mv = true;
+                        } else if ((Bukkit.getPluginManager().getPlugin("MultiWorld") != null)
+                            && Bukkit.getPluginManager().getPlugin("MultiWorld").isEnabled()) {
+                            mw = true;
                         }
-                        String actualWorldName = world.getName();
-                        sendMessage("Reloading generator for world: '" + actualWorldName + "'...");
-                        if (!Bukkit.getWorlds().isEmpty() && Bukkit.getWorlds().get(0).getName()
-                            .equals(worldName)) {
+                        for (String worldName : worlds) {
+                            World world = Bukkit.getWorld(getWorld(worldName));
+                            if (world == null) {
+                                sendMessage(
+                                    "&cInvalid world in PlotMe configuration: " + worldName);
+                                continue;
+                            }
+                            String actualWorldName = world.getName();
                             sendMessage(
-                                "&cYou need to stop the server to reload this world properly");
-                        } else {
-                            PlotSquared.get().removePlotAreas(actualWorldName);
-                            if (mv) {
-                                // unload world with MV
-                                Bukkit.getServer()
-                                    .dispatchCommand(Bukkit.getServer().getConsoleSender(),
-                                        "mv unload " + actualWorldName);
-                                try {
-                                    Thread.sleep(1000);
-                                } catch (InterruptedException ignored) {
-                                    Thread.currentThread().interrupt();
-                                }
-                                // load world with MV
-                                Bukkit.getServer()
-                                    .dispatchCommand(Bukkit.getServer().getConsoleSender(),
-                                        "mv import " + actualWorldName + " normal -g " + PlotSquared
-                                            .get().IMP.getPluginName());
-                            } else if (mw) {
-                                // unload world with MW
-                                Bukkit.getServer()
-                                    .dispatchCommand(Bukkit.getServer().getConsoleSender(),
-                                        "mw unload " + actualWorldName);
-                                try {
-                                    Thread.sleep(1000);
-                                } catch (InterruptedException ignored) {
-                                    Thread.currentThread().interrupt();
-                                }
-                                // load world with MW
-                                Bukkit.getServer()
-                                    .dispatchCommand(Bukkit.getServer().getConsoleSender(),
-                                        "mw create " + actualWorldName + " plugin:" + PlotSquared
-                                            .get().IMP.getPluginName());
+                                "Reloading generator for world: '" + actualWorldName + "'...");
+                            if (!Bukkit.getWorlds().isEmpty() && Bukkit.getWorlds().get(0).getName()
+                                .equals(worldName)) {
+                                sendMessage(
+                                    "&cYou need to stop the server to reload this world properly");
                             } else {
-                                // Load using Bukkit API
-                                // - User must set generator manually
-                                Bukkit.getServer().unloadWorld(world, true);
-                                World myWorld = WorldCreator.name(actualWorldName).generator(
-                                    new BukkitPlotGenerator(
-                                        PlotSquared.get().IMP.getDefaultGenerator())).createWorld();
-                                myWorld.save();
+                                PlotSquared.get().removePlotAreas(actualWorldName);
+                                if (mv) {
+                                    // unload world with MV
+                                    Bukkit.getServer()
+                                        .dispatchCommand(Bukkit.getServer().getConsoleSender(),
+                                            "mv unload " + actualWorldName);
+                                    try {
+                                        Thread.sleep(1000);
+                                    } catch (InterruptedException ignored) {
+                                        Thread.currentThread().interrupt();
+                                    }
+                                    // load world with MV
+                                    Bukkit.getServer()
+                                        .dispatchCommand(Bukkit.getServer().getConsoleSender(),
+                                            "mv import " + actualWorldName + " normal -g "
+                                                + PlotSquared.imp().getPluginName());
+                                } else if (mw) {
+                                    // unload world with MW
+                                    Bukkit.getServer()
+                                        .dispatchCommand(Bukkit.getServer().getConsoleSender(),
+                                            "mw unload " + actualWorldName);
+                                    try {
+                                        Thread.sleep(1000);
+                                    } catch (InterruptedException ignored) {
+                                        Thread.currentThread().interrupt();
+                                    }
+                                    // load world with MW
+                                    Bukkit.getServer()
+                                        .dispatchCommand(Bukkit.getServer().getConsoleSender(),
+                                            "mw create " + actualWorldName + " plugin:"
+                                                + PlotSquared.imp().getPluginName());
+                                } else {
+                                    // Load using Bukkit API
+                                    // - User must set generator manually
+                                    Bukkit.getServer().unloadWorld(world, true);
+                                    World myWorld = WorldCreator.name(actualWorldName).generator(
+                                        new BukkitPlotGenerator(
+                                            PlotSquared.get().IMP.getDefaultGenerator()))
+                                        .createWorld();
+                                    myWorld.save();
+                                }
                             }
                         }
+                    } catch (CommandException e) {
+                        e.printStackTrace();
+                    }
+                    if (done.get()) {
+                        done();
+                        sendMessage("&aDatabase conversion is now complete!");
+                        PlotSquared.debug("&c - Stop the server");
+                        PlotSquared.debug(
+                            "&c - Disable 'plotme-converter' and 'plotme-convert.cache-uuids' in the settings.yml");
+                        PlotSquared.debug(
+                            "&c - Correct any generator settings that haven't copied to 'settings.yml' properly");
+                        PlotSquared.debug("&c - Start the server");
+                    } else {
+                        sendMessage(
+                            "&cPlease wait until database conversion is complete. You will be notified with instructions when this happens!");
+                        done.set(true);
                     }
-                } catch (CommandException e) {
-                    e.printStackTrace();
-                }
-                if (done.get()) {
-                    done();
-                    sendMessage("&aDatabase conversion is now complete!");
-                    PlotSquared.debug("&c - Stop the server");
-                    PlotSquared.debug(
-                        "&c - Disable 'plotme-converter' and 'plotme-convert.cache-uuids' in the settings.yml");
-                    PlotSquared.debug(
-                        "&c - Correct any generator settings that haven't copied to 'settings.yml' properly");
-                    PlotSquared.debug("&c - Start the server");
-                } else {
-                    sendMessage(
-                        "&cPlease wait until database conversion is complete. You will be notified with instructions when this happens!");
-                    done.set(true);
                 }
             });
         } catch (InterruptedException | SQLException e) {

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/database/plotme/PlotMeConnector_017.java

@@ -75,7 +75,7 @@ public class PlotMeConnector_017 extends APlotMeConnector {
                 int path = PlotSquared.get().worlds.getInt("worlds." + world + ".road.width");
                 plotWidth.put(world, plot);
                 roadWidth.put(world, path);
-                merges.put(world, new HashMap<>());
+                merges.put(world, new HashMap<PlotId, boolean[]>());
             }
             if (merge) {
                 int tx = resultSet.getInt("topX");
@@ -178,8 +178,11 @@ public class PlotMeConnector_017 extends APlotMeConnector {
         HashMap<String, HashMap<PlotId, Plot>> processed = new HashMap<>();
 
         for (Plot plot : plots.values()) {
-            HashMap<PlotId, Plot> map =
-                processed.computeIfAbsent(plot.getWorldName(), k -> new HashMap<>());
+            HashMap<PlotId, Plot> map = processed.get(plot.getWorldName());
+            if (map == null) {
+                map = new HashMap<>();
+                processed.put(plot.getWorldName(), map);
+            }
             map.put(plot.getId(), plot);
         }
         return processed;

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/generator/BukkitPlotGenerator.java

@@ -19,10 +19,7 @@ import org.bukkit.block.Biome;
 import org.bukkit.generator.BlockPopulator;
 import org.bukkit.generator.ChunkGenerator;
 
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Random;
-import java.util.Set;
+import java.util.*;
 
 public class BukkitPlotGenerator extends ChunkGenerator
     implements GeneratorWrapper<ChunkGenerator> {
@@ -31,6 +28,7 @@ public class BukkitPlotGenerator extends ChunkGenerator
     private final IndependentPlotGenerator plotGenerator;
     private final ChunkGenerator platformGenerator;
     private final boolean full;
+    private final HashMap<ChunkLoc, byte[][]> dataMap = new HashMap<>();
     private List<BlockPopulator> populators;
     private boolean loaded = false;
 
@@ -201,11 +199,9 @@ public class BukkitPlotGenerator extends ChunkGenerator
         if (populators == null && platformGenerator != null) {
             populators = new ArrayList<>(platformGenerator.getDefaultPopulators(world));
         }
-        if (this.populators != null) {
-            for (BlockPopulator populator : this.populators) {
-                if (!existing.contains(populator)) {
-                    toAdd.add(populator);
-                }
+        for (BlockPopulator populator : this.populators) {
+            if (!existing.contains(populator)) {
+                toAdd.add(populator);
             }
         }
         return toAdd;

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/listeners/ChunkListener.java

@@ -50,6 +50,7 @@ public class ChunkListener implements Listener {
             } catch (Throwable ignored) {
                 PlotSquared.debug(PlotSquared.get().IMP.getPluginName()
                         + "/Server not compatible for chunk processor trim/gc");
+
                 Settings.Chunk_Processor.AUTO_TRIM = false;
             }
         }
@@ -59,45 +60,48 @@ public class ChunkListener implements Listener {
         for (World world : Bukkit.getWorlds()) {
             world.setAutoSave(false);
         }
-        TaskManager.runTaskRepeat(() -> {
-            try {
-                HashSet<Chunk> toUnload = new HashSet<>();
-                for (World world : Bukkit.getWorlds()) {
-                    String worldName = world.getName();
-                    if (!PlotSquared.get().hasPlotArea(worldName)) {
-                        continue;
-                    }
-                    Object w = world.getClass().getDeclaredMethod("getHandle").invoke(world);
-                    Object chunkMap = w.getClass().getDeclaredMethod("getPlayerChunkMap").invoke(w);
-                    Method methodIsChunkInUse =
-                            chunkMap.getClass().getDeclaredMethod("isChunkInUse", int.class, int.class);
-                    Chunk[] chunks = world.getLoadedChunks();
-                    for (Chunk chunk : chunks) {
-                        if ((boolean) methodIsChunkInUse
+        TaskManager.runTaskRepeat(new Runnable() {
+            @Override public void run() {
+                try {
+                    HashSet<Chunk> toUnload = new HashSet<>();
+                    for (World world : Bukkit.getWorlds()) {
+                        String worldName = world.getName();
+                        if (!PlotSquared.get().hasPlotArea(worldName)) {
+                            continue;
+                        }
+                        Object w = world.getClass().getDeclaredMethod("getHandle").invoke(world);
+                        Object chunkMap =
+                            w.getClass().getDeclaredMethod("getPlayerChunkMap").invoke(w);
+                        Method methodIsChunkInUse = chunkMap.getClass()
+                            .getDeclaredMethod("isChunkInUse", int.class, int.class);
+                        Chunk[] chunks = world.getLoadedChunks();
+                        for (Chunk chunk : chunks) {
+                            if ((boolean) methodIsChunkInUse
                                 .invoke(chunkMap, chunk.getX(), chunk.getZ())) {
-                            continue;
+                                continue;
+                            }
+                            int x = chunk.getX();
+                            int z = chunk.getZ();
+                            if (!shouldSave(worldName, x, z)) {
+                                unloadChunk(worldName, chunk, false);
+                                continue;
+                            }
+                            toUnload.add(chunk);
                         }
-                        int x = chunk.getX();
-                        int z = chunk.getZ();
-                        if (!shouldSave(worldName, x, z)) {
-                            unloadChunk(worldName, chunk, false);
-                            continue;
-                        }
-                        toUnload.add(chunk);
                     }
-                }
-                if (toUnload.isEmpty()) {
-                    return;
-                }
-                long start = System.currentTimeMillis();
-                for (Chunk chunk : toUnload) {
-                    if (System.currentTimeMillis() - start > 5) {
+                    if (toUnload.isEmpty()) {
                         return;
                     }
-                    chunk.unload(true, false);
+                    long start = System.currentTimeMillis();
+                    for (Chunk chunk : toUnload) {
+                        if (System.currentTimeMillis() - start > 5) {
+                            return;
+                        }
+                        chunk.unload(true, false);
+                    }
+                } catch (Throwable e) {
+                    e.printStackTrace();
                 }
-            } catch (Throwable e) {
-                e.printStackTrace();
             }
         }, 1);
     }
@@ -108,7 +112,7 @@ public class ChunkListener implements Listener {
         }
         Object c = this.methodGetHandleChunk.of(chunk).call();
         RefField.RefExecutor field = this.mustSave.of(c);
-        if ((Boolean) field.get()) {
+        if ((Boolean) field.get() == true) {
             field.set(false);
             if (chunk.isLoaded()) {
                 ignoreUnload = true;
@@ -222,26 +226,9 @@ public class ChunkListener implements Listener {
     private void cleanChunk(final Chunk chunk) {
         TaskManager.index.incrementAndGet();
         final Integer currentIndex = TaskManager.index.get();
-        Integer task = TaskManager.runTaskRepeat(() -> {
-            if (!chunk.isLoaded()) {
-                Bukkit.getScheduler().cancelTask(TaskManager.tasks.get(currentIndex));
-                TaskManager.tasks.remove(currentIndex);
-                PlotSquared.debug(C.PREFIX.s() + "&aSuccessfully processed and unloaded chunk!");
-                chunk.unload(true, true);
-                return;
-            }
-            BlockState[] tiles = chunk.getTileEntities();
-            if (tiles.length == 0) {
-                Bukkit.getScheduler().cancelTask(TaskManager.tasks.get(currentIndex));
-                TaskManager.tasks.remove(currentIndex);
-                PlotSquared.debug(C.PREFIX.s() + "&aSuccessfully processed and unloaded chunk!");
-                chunk.unload(true, true);
-                return;
-            }
-            long start = System.currentTimeMillis();
-            int i = 0;
-            while (System.currentTimeMillis() - start < 250) {
-                if (i >= tiles.length) {
+        Integer task = TaskManager.runTaskRepeat(new Runnable() {
+            @Override public void run() {
+                if (!chunk.isLoaded()) {
                     Bukkit.getScheduler().cancelTask(TaskManager.tasks.get(currentIndex));
                     TaskManager.tasks.remove(currentIndex);
                     PlotSquared
@@ -249,8 +236,29 @@ public class ChunkListener implements Listener {
                     chunk.unload(true, true);
                     return;
                 }
-                tiles[i].getBlock().setType(Material.AIR, false);
-                i++;
+                BlockState[] tiles = chunk.getTileEntities();
+                if (tiles.length == 0) {
+                    Bukkit.getScheduler().cancelTask(TaskManager.tasks.get(currentIndex));
+                    TaskManager.tasks.remove(currentIndex);
+                    PlotSquared
+                        .debug(C.PREFIX.s() + "&aSuccessfully processed and unloaded chunk!");
+                    chunk.unload(true, true);
+                    return;
+                }
+                long start = System.currentTimeMillis();
+                int i = 0;
+                while (System.currentTimeMillis() - start < 250) {
+                    if (i >= tiles.length) {
+                        Bukkit.getScheduler().cancelTask(TaskManager.tasks.get(currentIndex));
+                        TaskManager.tasks.remove(currentIndex);
+                        PlotSquared
+                            .debug(C.PREFIX.s() + "&aSuccessfully processed and unloaded chunk!");
+                        chunk.unload(true, true);
+                        return;
+                    }
+                    tiles[i].getBlock().setType(Material.AIR, false);
+                    i++;
+                }
             }
         }, 5);
         TaskManager.tasks.put(currentIndex, task);

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/listeners/EntitySpawnListener.java

@@ -129,7 +129,7 @@ import java.util.List;
     }
 
     @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
-    public void vehicleMove(VehicleMoveEvent event) {
+    public void vehicleMove(VehicleMoveEvent event) throws IllegalAccessException {
         test(event.getVehicle());
     }
 

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/listeners/PlayerEvents.java

@@ -602,11 +602,13 @@ public class PlayerEvents extends PlotListener implements Listener {
         // Delayed
 
         // Async
-        TaskManager.runTaskLaterAsync(() -> {
-            if (!player.hasPlayedBefore() && player.isOnline()) {
-                player.saveData();
+        TaskManager.runTaskLaterAsync(new Runnable() {
+            @Override public void run() {
+                if (!player.hasPlayedBefore() && player.isOnline()) {
+                    player.saveData();
+                }
+                EventUtil.manager.doJoinTask(pp);
             }
-            EventUtil.manager.doJoinTask(pp);
         }, 20);
     }
 
@@ -2211,7 +2213,7 @@ public class PlayerEvents extends PlotListener implements Listener {
             MainUtil.sendMessage(pp, C.NO_PERMISSION_EVENT, C.PERMISSION_ADMIN_BUILD_UNOWNED);
             event.setCancelled(true);
         } else if (!plot.isAdded(pp.getUUID())) {
-            if (Flags.USE.contains(plot, PlotBlock.get(event.getBucket()))) {
+            if (Flags.USE.contains(plot, PlotBlock.get(event.getBucket().getId(), 0))) {
                 return;
             }
             if (Permissions.hasPermission(pp, C.PERMISSION_ADMIN_BUILD_OTHER)) {
@@ -2524,7 +2526,7 @@ public class PlayerEvents extends PlotListener implements Listener {
     @SuppressWarnings("deprecation")
     @EventHandler(priority = EventPriority.HIGHEST)
     public void onEntityCombustByEntity(EntityCombustByEntityEvent event) {
-        EntityDamageByEntityEvent eventChange;
+        EntityDamageByEntityEvent eventChange = null;
         eventChange = new EntityDamageByEntityEvent(event.getCombuster(), event.getEntity(),
                 EntityDamageEvent.DamageCause.FIRE_TICK, (double) event.getDuration());
         onEntityDamageByEntityEvent(eventChange);

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/listeners/PlotPlusListener.java

@@ -37,43 +37,45 @@ public class PlotPlusListener extends PlotListener implements Listener {
     private static final HashMap<UUID, Interval> healRunnable = new HashMap<>();
 
     public static void startRunnable(JavaPlugin plugin) {
-        plugin.getServer().getScheduler().scheduleSyncRepeatingTask(plugin, () -> {
-            if (!healRunnable.isEmpty()) {
-                for (Iterator<Entry<UUID, Interval>> iterator =
-                     healRunnable.entrySet().iterator(); iterator.hasNext(); ) {
-                    Entry<UUID, Interval> entry = iterator.next();
-                    Interval value = entry.getValue();
-                    ++value.count;
-                    if (value.count == value.interval) {
-                        value.count = 0;
-                        Player player = Bukkit.getPlayer(entry.getKey());
-                        if (player == null) {
-                            iterator.remove();
-                            continue;
-                        }
-                        double level = player.getHealth();
-                        if (level != value.max) {
-                            player.setHealth(Math.min(level + value.amount, value.max));
+        plugin.getServer().getScheduler().scheduleSyncRepeatingTask(plugin, new Runnable() {
+            @Override public void run() {
+                if (!healRunnable.isEmpty()) {
+                    for (Iterator<Entry<UUID, Interval>> iterator =
+                         healRunnable.entrySet().iterator(); iterator.hasNext(); ) {
+                        Entry<UUID, Interval> entry = iterator.next();
+                        Interval value = entry.getValue();
+                        ++value.count;
+                        if (value.count == value.interval) {
+                            value.count = 0;
+                            Player player = Bukkit.getPlayer(entry.getKey());
+                            if (player == null) {
+                                iterator.remove();
+                                continue;
+                            }
+                            double level = player.getHealth();
+                            if (level != value.max) {
+                                player.setHealth(Math.min(level + value.amount, value.max));
+                            }
                         }
                     }
                 }
-            }
-            if (!feedRunnable.isEmpty()) {
-                for (Iterator<Entry<UUID, Interval>> iterator =
-                     feedRunnable.entrySet().iterator(); iterator.hasNext(); ) {
-                    Entry<UUID, Interval> entry = iterator.next();
-                    Interval value = entry.getValue();
-                    ++value.count;
-                    if (value.count == value.interval) {
-                        value.count = 0;
-                        Player player = Bukkit.getPlayer(entry.getKey());
-                        if (player == null) {
-                            iterator.remove();
-                            continue;
-                        }
-                        int level = player.getFoodLevel();
-                        if (level != value.max) {
-                            player.setFoodLevel(Math.min(level + value.amount, value.max));
+                if (!feedRunnable.isEmpty()) {
+                    for (Iterator<Entry<UUID, Interval>> iterator =
+                         feedRunnable.entrySet().iterator(); iterator.hasNext(); ) {
+                        Entry<UUID, Interval> entry = iterator.next();
+                        Interval value = entry.getValue();
+                        ++value.count;
+                        if (value.count == value.interval) {
+                            value.count = 0;
+                            Player player = Bukkit.getPlayer(entry.getKey());
+                            if (player == null) {
+                                iterator.remove();
+                                continue;
+                            }
+                            int level = player.getFoodLevel();
+                            if (level != value.max) {
+                                player.setFoodLevel(Math.min(level + value.amount, value.max));
+                            }
                         }
                     }
                 }

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/listeners/SingleWorldListener.java

@@ -33,8 +33,8 @@ import static com.github.intellectualsites.plotsquared.plot.util.ReflectionUtils
             this.done = classChunk.getField("done").getRealField();
             this.lit = classChunk.getField("lit").getRealField();
             this.s = classChunk.getField("s").getRealField();
-        } catch (Throwable e) {
-            e.printStackTrace();
+        } catch (Throwable ignore) {
+            ignore.printStackTrace();
         }
         Bukkit.getPluginManager().registerEvents(this, plugin);
     }

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/object/BukkitLazyBlock.java

@@ -10,7 +10,7 @@ public class BukkitLazyBlock extends LazyBlock {
     private StringPlotBlock pb;
 
     public BukkitLazyBlock(Block block) {
-        this.pb = PlotBlock.get(block.getType().toString());
+        this.pb = (StringPlotBlock) PlotBlock.get(block.getType().toString());
     }
 
     public BukkitLazyBlock(StringPlotBlock pb) {

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/object/BukkitPlayer.java

@@ -77,7 +77,7 @@ public class BukkitPlayer extends PlotPlayer {
     private void callEvent(final Event event) {
         RegisteredListener[] listeners = event.getHandlers().getRegisteredListeners();
         for (RegisteredListener listener : listeners) {
-            if (listener.getPlugin().getName().equals(PlotSquared.get().IMP.getPluginName())) {
+            if (listener.getPlugin().getName().equals(PlotSquared.imp().getPluginName())) {
                 continue;
             }
             try {
@@ -144,7 +144,7 @@ public class BukkitPlayer extends PlotPlayer {
     }
 
     @Override public void sendMessage(String message) {
-        if (!StringMan.isEqual(this.getMeta("lastMessage"), message) || (
+        if (!StringMan.isEqual(this.<String>getMeta("lastMessage"), message) || (
             System.currentTimeMillis() - this.<Long>getMeta("lastMessageTime") > 5000)) {
             setMeta("lastMessage", message);
             setMeta("lastMessageTime", System.currentTimeMillis());

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/object/entity/ReplicatingEntityWrapper.java

@@ -38,7 +38,7 @@ public final class ReplicatingEntityWrapper extends EntityWrapper {
         if (depth == 0) {
             return;
         }
-        Entity passenger = entity.getPassengers().get(0);
+        Entity passenger = entity.getPassenger();
         if (passenger != null) {
             this.base.passenger = new ReplicatingEntityWrapper(passenger, depth);
         }

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/util/BukkitChunkManager.java

@@ -101,7 +101,9 @@ public class BukkitChunkManager extends ChunkManager {
         Set<ChunkLoc> chunks = super.getChunkChunks(world);
         for (Chunk chunk : Bukkit.getWorld(world).getLoadedChunks()) {
             ChunkLoc loc = new ChunkLoc(chunk.getX() >> 5, chunk.getZ() >> 5);
-            chunks.add(loc);
+            if (!chunks.contains(loc)) {
+                chunks.add(loc);
+            }
         }
         return chunks;
     }
@@ -113,6 +115,10 @@ public class BukkitChunkManager extends ChunkManager {
         final Runnable whenDone) {
         final int relX = newPos.getX() - pos1.getX();
         final int relZ = newPos.getZ() - pos1.getZ();
+        com.github.intellectualsites.plotsquared.plot.object.Location pos4 =
+            new com.github.intellectualsites.plotsquared.plot.object.Location(newPos.getWorld(),
+                newPos.getX() + relX, 256, newPos.getZ() + relZ);
+
         final RegionWrapper region =
             new RegionWrapper(pos1.getX(), pos2.getX(), pos1.getZ(), pos2.getZ());
         final World oldWorld = Bukkit.getWorld(pos1.getWorld());

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/util/BukkitInventoryUtil.java

@@ -83,6 +83,7 @@ public class BukkitInventoryUtil extends InventoryUtil {
         }
         // int id = item.getTypeId();
         Material id = item.getType();
+        short data = item.getDurability();
         int amount = item.getAmount();
         String name = null;
         String[] lore = null;

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/util/BukkitSetupUtils.java

@@ -208,6 +208,8 @@ public class BukkitSetupUtils extends SetupUtils {
                     return world;
                 }
             }
+            World bw =
+                Bukkit.createWorld(new WorldCreator(object.world).environment(Environment.NORMAL));
         }
         return object.world;
     }

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/util/BukkitUtil.java

@@ -215,7 +215,7 @@ import java.util.*;
 
     public static List<Entity> getEntities(@NonNull final String worldName) {
         World world = getWorld(worldName);
-        return world != null ? world.getEntities() : new ArrayList<>();
+        return world != null ? world.getEntities() : new ArrayList<Entity>();
     }
 
     public static Location getLocation(@NonNull final Entity entity) {
@@ -233,7 +233,7 @@ import java.util.*;
     }
 
     public static BukkitLegacyMappings getBukkitLegacyMappings() {
-        return (BukkitLegacyMappings) PlotSquared.get().IMP.getLegacyMappings();
+        return (BukkitLegacyMappings) PlotSquared.imp().getLegacyMappings();
     }
 
     public static Material getMaterial(@NonNull final PlotBlock plotBlock) {

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/util/NbtFactory.java

@@ -117,7 +117,7 @@ public class NbtFactory {
      *
      * @return The NBT list.
      */
-    public static NbtList createList(Iterable<?> iterable) {
+    public static NbtList createList(Iterable<? extends Object> iterable) {
         NbtList list = get().new NbtList(INSTANCE.createNbtTag(NbtType.TAG_LIST, null));
 
         // Add the content as well
@@ -951,7 +951,8 @@ public class NbtFactory {
                 @Override public Entry<String, Object> next() {
                     Entry<String, Object> entry = proxy.next();
 
-                    return new SimpleEntry<>(entry.getKey(), wrapOutgoing(entry.getValue()));
+                    return new SimpleEntry<String, Object>(entry.getKey(),
+                        wrapOutgoing(entry.getValue()));
                 }
 
                 @Override public void remove() {

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/util/SendChunk.java

@@ -65,7 +65,11 @@ public class SendChunk {
         int view = Bukkit.getServer().getViewDistance();
         for (Chunk chunk : chunks) {
             String world = chunk.getWorld().getName();
-            ArrayList<Chunk> list = map.computeIfAbsent(world, k -> new ArrayList<>());
+            ArrayList<Chunk> list = map.get(world);
+            if (list == null) {
+                list = new ArrayList<>();
+                map.put(world, list);
+            }
             list.add(chunk);
             Object c = this.methodGetHandleChunk.of(chunk).call();
             this.methodInitLighting.of(c).call();
@@ -114,17 +118,20 @@ public class SendChunk {
             }
         }
         for (final Chunk chunk : chunks) {
-            TaskManager.runTask(() -> {
-                try {
-                    chunk.unload(true, false);
-                } catch (Throwable ignored) {
-                    String worldName = chunk.getWorld().getName();
-                    PlotSquared.debug(
-                        "$4Could not save chunk: " + worldName + ';' + chunk.getX() + ";" + chunk
-                            .getZ());
-                    PlotSquared.debug("$3 - $4File may be open in another process (e.g. MCEdit)");
-                    PlotSquared.debug("$3 - $4" + worldName + "/level.dat or " + worldName
-                        + "/level_old.dat may be corrupt (try repairing or removing these)");
+            TaskManager.runTask(new Runnable() {
+                @Override public void run() {
+                    try {
+                        chunk.unload(true, false);
+                    } catch (Throwable ignored) {
+                        String worldName = chunk.getWorld().getName();
+                        PlotSquared.debug(
+                            "$4Could not save chunk: " + worldName + ';' + chunk.getX() + ";"
+                                + chunk.getZ());
+                        PlotSquared
+                            .debug("$3 - $4File may be open in another process (e.g. MCEdit)");
+                        PlotSquared.debug("$3 - $4" + worldName + "/level.dat or " + worldName
+                            + "/level_old.dat may be corrupt (try repairing or removing these)");
+                    }
                 }
             });
         }

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/util/SetGenCB.java

@@ -5,10 +5,12 @@ import com.github.intellectualsites.plotsquared.plot.PlotSquared;
 import com.github.intellectualsites.plotsquared.plot.generator.GeneratorWrapper;
 import com.github.intellectualsites.plotsquared.plot.util.SetupUtils;
 import org.bukkit.World;
+import org.bukkit.generator.BlockPopulator;
 import org.bukkit.generator.ChunkGenerator;
 
 import java.lang.reflect.Field;
 import java.util.ArrayList;
+import java.util.Iterator;
 
 public class SetGenCB {
 
@@ -43,8 +45,12 @@ public class SetGenCB {
             }
         }
         if (!set) {
-            world.getPopulators()
-                .removeIf(blockPopulator -> blockPopulator instanceof BukkitAugmentedGenerator);
+            Iterator<BlockPopulator> iterator = world.getPopulators().iterator();
+            while (iterator.hasNext()) {
+                if (iterator.next() instanceof BukkitAugmentedGenerator) {
+                    iterator.remove();
+                }
+            }
         }
         PlotSquared.get()
             .loadWorld(world.getName(), PlotSquared.get().IMP.getGenerator(world.getName(), null));

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/util/block/BukkitLocalQueue.java

@@ -189,11 +189,11 @@ public class BukkitLocalQueue<T> extends BasicLocalBlockQueue<T> {
             for (int x = 0; x < lc.biomes.length; x++) {
                 String[] biomes2 = lc.biomes[x];
                 if (biomes2 != null) {
-                    for (String biomeStr : biomes2) {
+                    for (int y = 0; y < biomes2.length; y++) {
+                        String biomeStr = biomes2[y];
                         if (biomeStr != null) {
                             if (last == null || !StringMan.isEqual(last, biomeStr)) {
                                 biome = Biome.valueOf(biomeStr.toUpperCase());
-                                last = biomeStr;
                             }
                             worldObj.setBiome(bx, bz, biome);
                         }
@@ -244,8 +244,8 @@ public class BukkitLocalQueue<T> extends BasicLocalBlockQueue<T> {
         if (disableResult != null) {
             try {
                 fieldNeighbors.set(disableResult[0], disableResult[1]);
-            } catch (Throwable e) {
-                e.printStackTrace();
+            } catch (Throwable ignore) {
+                ignore.printStackTrace();
             }
         }
     }

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/uuid/FileUUIDHandler.java

@@ -47,196 +47,204 @@ public class FileUUIDHandler extends UUIDHandlerImplementation {
         } else {
             world = worlds.get(0).getName();
         }
-        TaskManager.runTaskAsync(() -> {
-            PlotSquared.debug(C.PREFIX + "&6Starting player data caching for: " + world);
-            File uuidFile = new File(PlotSquared.get().IMP.getDirectory(), "uuids.txt");
-            if (uuidFile.exists()) {
-                try {
-                    List<String> lines =
-                        Files.readAllLines(uuidFile.toPath(), StandardCharsets.UTF_8);
-                    for (String line : lines) {
-                        try {
-                            line = line.trim();
-                            if (line.isEmpty()) {
-                                continue;
+        TaskManager.runTaskAsync(new Runnable() {
+            @Override public void run() {
+                PlotSquared.debug(C.PREFIX + "&6Starting player data caching for: " + world);
+                File uuidFile = new File(PlotSquared.get().IMP.getDirectory(), "uuids.txt");
+                if (uuidFile.exists()) {
+                    try {
+                        List<String> lines =
+                            Files.readAllLines(uuidFile.toPath(), StandardCharsets.UTF_8);
+                        for (String line : lines) {
+                            try {
+                                line = line.trim();
+                                if (line.isEmpty()) {
+                                    continue;
+                                }
+                                line = line.replaceAll("[\\|][0-9]+[\\|][0-9]+[\\|]", "");
+                                String[] split = line.split("\\|");
+                                String name = split[0];
+                                if (name.isEmpty() || (name.length() > 16) || !StringMan
+                                    .isAlphanumericUnd(name)) {
+                                    continue;
+                                }
+                                UUID uuid = FileUUIDHandler.this.uuidWrapper.getUUID(name);
+                                if (uuid == null) {
+                                    continue;
+                                }
+                                UUIDHandler.add(new StringWrapper(name), uuid);
+                            } catch (Exception e2) {
+                                e2.printStackTrace();
                             }
-                            line = line.replaceAll("[\\|][0-9]+[\\|][0-9]+[\\|]", "");
-                            String[] split = line.split("\\|");
-                            String name = split[0];
-                            if (name.isEmpty() || (name.length() > 16) || !StringMan
-                                .isAlphanumericUnd(name)) {
-                                continue;
+                        }
+                    } catch (IOException e) {
+                        e.printStackTrace();
+                    }
+                }
+                HashBiMap<StringWrapper, UUID> toAdd =
+                    HashBiMap.create(new HashMap<StringWrapper, UUID>());
+                if (Settings.UUID.NATIVE_UUID_PROVIDER) {
+                    HashSet<UUID> all = UUIDHandler.getAllUUIDS();
+                    PlotSquared.debug("&aFast mode UUID caching enabled!");
+                    File playerDataFolder =
+                        new File(container, world + File.separator + "playerdata");
+                    String[] dat = playerDataFolder.list(new DatFileFilter());
+                    boolean check = all.isEmpty();
+                    if (dat != null) {
+                        for (String current : dat) {
+                            String s = current.replaceAll(".dat$", "");
+                            try {
+                                UUID uuid = UUID.fromString(s);
+                                if (check || all.remove(uuid)) {
+                                    File file = new File(playerDataFolder, current);
+                                    NbtFactory.NbtCompound compound = NbtFactory
+                                        .fromStream(new FileInputStream(file),
+                                            NbtFactory.StreamOptions.GZIP_COMPRESSION);
+                                    if (!compound.containsKey("bukkit")) {
+                                        PlotSquared.debug("ERROR: Player data (" + uuid.toString()
+                                            + ".dat) does not contain the the key \"bukkit\"");
+                                    } else {
+                                        NbtFactory.NbtCompound bukkit =
+                                            (NbtFactory.NbtCompound) compound.get("bukkit");
+                                        String name = (String) bukkit.get("lastKnownName");
+                                        long last = (long) bukkit.get("lastPlayed");
+                                        long first = (long) bukkit.get("firstPlayed");
+                                        if (ExpireManager.IMP != null) {
+                                            ExpireManager.IMP.storeDate(uuid, last);
+                                            ExpireManager.IMP.storeAccountAge(uuid, last - first);
+                                        }
+                                        toAdd.put(new StringWrapper(name), uuid);
+                                    }
+                                }
+                            } catch (Exception e) {
+                                e.printStackTrace();
+                                PlotSquared.debug(C.PREFIX + "Invalid playerdata: " + current);
                             }
-                            UUID uuid = FileUUIDHandler.this.uuidWrapper.getUUID(name);
-                            if (uuid == null) {
-                                continue;
-                            }
-                            UUIDHandler.add(new StringWrapper(name), uuid);
-                        } catch (Exception e2) {
-                            e2.printStackTrace();
                         }
                     }
-                } catch (IOException e) {
-                    e.printStackTrace();
+                    add(toAdd);
+                    if (all.isEmpty()) {
+                        if (whenDone != null) {
+                            whenDone.run();
+                        }
+                        return;
+                    } else {
+                        PlotSquared.debug("Failed to cache: " + all.size()
+                            + " uuids - slowly processing all files");
+                    }
                 }
-            }
-            HashBiMap<StringWrapper, UUID> toAdd = HashBiMap.create(new HashMap<>());
-            if (Settings.UUID.NATIVE_UUID_PROVIDER) {
-                HashSet<UUID> all = UUIDHandler.getAllUUIDS();
-                PlotSquared.debug("&aFast mode UUID caching enabled!");
-                File playerDataFolder = new File(container, world + File.separator + "playerdata");
-                String[] dat = playerDataFolder.list(new DatFileFilter());
-                boolean check = all.isEmpty();
-                if (dat != null) {
-                    for (String current : dat) {
-                        String s = current.replaceAll(".dat$", "");
-                        try {
-                            UUID uuid = UUID.fromString(s);
-                            if (check || all.remove(uuid)) {
-                                File file = new File(playerDataFolder, current);
-                                NbtFactory.NbtCompound compound = NbtFactory
-                                    .fromStream(new FileInputStream(file),
-                                        NbtFactory.StreamOptions.GZIP_COMPRESSION);
-                                if (!compound.containsKey("bukkit")) {
-                                    PlotSquared.debug("ERROR: Player data (" + uuid.toString()
-                                        + ".dat) does not contain the the key \"bukkit\"");
-                                } else {
-                                    NbtFactory.NbtCompound bukkit =
-                                        (NbtFactory.NbtCompound) compound.get("bukkit");
-                                    String name = (String) bukkit.get("lastKnownName");
-                                    long last = (long) bukkit.get("lastPlayed");
-                                    long first = (long) bukkit.get("firstPlayed");
-                                    if (ExpireManager.IMP != null) {
-                                        ExpireManager.IMP.storeDate(uuid, last);
-                                        ExpireManager.IMP.storeAccountAge(uuid, last - first);
+                HashSet<String> worlds = Sets.newHashSet(world, "world");
+                HashSet<UUID> uuids = new HashSet<>();
+                HashSet<String> names = new HashSet<>();
+                File playerDataFolder = null;
+                for (String worldName : worlds) {
+                    // Getting UUIDs
+                    playerDataFolder =
+                        new File(container, worldName + File.separator + "playerdata");
+                    String[] dat = playerDataFolder.list(new DatFileFilter());
+                    if ((dat != null) && (dat.length != 0)) {
+                        for (String current : dat) {
+                            String s = current.replaceAll(".dat$", "");
+                            try {
+                                UUID uuid = UUID.fromString(s);
+                                uuids.add(uuid);
+                            } catch (Exception ignored) {
+                                PlotSquared.debug(C.PREFIX + "Invalid PlayerData: " + current);
+                            }
+                        }
+                        break;
+                    }
+                    // Getting names
+                    File playersFolder = new File(worldName + File.separator + "players");
+                    dat = playersFolder.list(new DatFileFilter());
+                    if ((dat != null) && (dat.length != 0)) {
+                        for (String current : dat) {
+                            names.add(current.replaceAll(".dat$", ""));
+                        }
+                        break;
+                    }
+                }
+                for (UUID uuid : uuids) {
+                    try {
+                        File file =
+                            new File(playerDataFolder + File.separator + uuid.toString() + ".dat");
+                        if (!file.exists()) {
+                            continue;
+                        }
+                        NbtFactory.NbtCompound compound = NbtFactory
+                            .fromStream(new FileInputStream(file),
+                                NbtFactory.StreamOptions.GZIP_COMPRESSION);
+                        if (!compound.containsKey("bukkit")) {
+                            PlotSquared.debug("ERROR: Player data (" + uuid.toString()
+                                + ".dat) does not contain the the key \"bukkit\"");
+                        } else {
+                            NbtFactory.NbtCompound bukkit =
+                                (NbtFactory.NbtCompound) compound.get("bukkit");
+                            String name = (String) bukkit.get("lastKnownName");
+                            StringWrapper wrap = new StringWrapper(name);
+                            if (!toAdd.containsKey(wrap)) {
+                                long last = (long) bukkit.get("lastPlayed");
+                                long first = (long) bukkit.get("firstPlayed");
+                                if (Settings.UUID.OFFLINE) {
+                                    if (Settings.UUID.FORCE_LOWERCASE && !name.toLowerCase()
+                                        .equals(name)) {
+                                        uuid = FileUUIDHandler.this.uuidWrapper.getUUID(name);
+                                    } else {
+                                        long most = (long) compound.get("UUIDMost");
+                                        long least = (long) compound.get("UUIDLeast");
+                                        uuid = new UUID(most, least);
                                     }
-                                    toAdd.put(new StringWrapper(name), uuid);
+                                }
+                                if (ExpireManager.IMP != null) {
+                                    ExpireManager.IMP.storeDate(uuid, last);
+                                    ExpireManager.IMP.storeAccountAge(uuid, last - first);
+                                }
+                                toAdd.put(wrap, uuid);
+                            }
+                        }
+                    } catch (Exception ignored) {
+                        PlotSquared
+                            .debug(C.PREFIX + "&6Invalid PlayerData: " + uuid.toString() + ".dat");
+                    }
+                }
+                for (String name : names) {
+                    UUID uuid = FileUUIDHandler.this.uuidWrapper.getUUID(name);
+                    StringWrapper nameWrap = new StringWrapper(name);
+                    toAdd.put(nameWrap, uuid);
+                }
+
+                if (getUUIDMap().isEmpty()) {
+                    for (OfflinePlotPlayer op : FileUUIDHandler.this.uuidWrapper
+                        .getOfflinePlayers()) {
+                        long last = op.getLastPlayed();
+                        if (last != 0) {
+                            String name = op.getName();
+                            StringWrapper wrap = new StringWrapper(name);
+                            if (!toAdd.containsKey(wrap)) {
+                                UUID uuid = FileUUIDHandler.this.uuidWrapper.getUUID(op);
+                                toAdd.put(wrap, uuid);
+                                if (ExpireManager.IMP != null) {
+                                    ExpireManager.IMP.storeDate(uuid, last);
                                 }
                             }
-                        } catch (Exception e) {
-                            e.printStackTrace();
-                            PlotSquared.debug(C.PREFIX + "Invalid playerdata: " + current);
                         }
                     }
                 }
                 add(toAdd);
-                if (all.isEmpty()) {
-                    if (whenDone != null) {
-                        whenDone.run();
-                    }
-                    return;
-                } else {
-                    PlotSquared.debug(
-                        "Failed to cache: " + all.size() + " uuids - slowly processing all files");
+                if (whenDone != null) {
+                    whenDone.run();
                 }
             }
-            HashSet<String> worlds1 = Sets.newHashSet(world, "world");
-            HashSet<UUID> uuids = new HashSet<>();
-            HashSet<String> names = new HashSet<>();
-            File playerDataFolder = null;
-            for (String worldName : worlds1) {
-                // Getting UUIDs
-                playerDataFolder = new File(container, worldName + File.separator + "playerdata");
-                String[] dat = playerDataFolder.list(new DatFileFilter());
-                if ((dat != null) && (dat.length != 0)) {
-                    for (String current : dat) {
-                        String s = current.replaceAll(".dat$", "");
-                        try {
-                            UUID uuid = UUID.fromString(s);
-                            uuids.add(uuid);
-                        } catch (Exception ignored) {
-                            PlotSquared.debug(C.PREFIX + "Invalid PlayerData: " + current);
-                        }
-                    }
-                    break;
-                }
-                // Getting names
-                File playersFolder = new File(worldName + File.separator + "players");
-                dat = playersFolder.list(new DatFileFilter());
-                if ((dat != null) && (dat.length != 0)) {
-                    for (String current : dat) {
-                        names.add(current.replaceAll(".dat$", ""));
-                    }
-                    break;
-                }
-            }
-            for (UUID uuid : uuids) {
-                try {
-                    File file =
-                        new File(playerDataFolder + File.separator + uuid.toString() + ".dat");
-                    if (!file.exists()) {
-                        continue;
-                    }
-                    NbtFactory.NbtCompound compound = NbtFactory
-                        .fromStream(new FileInputStream(file),
-                            NbtFactory.StreamOptions.GZIP_COMPRESSION);
-                    if (!compound.containsKey("bukkit")) {
-                        PlotSquared.debug("ERROR: Player data (" + uuid.toString()
-                            + ".dat) does not contain the the key \"bukkit\"");
-                    } else {
-                        NbtFactory.NbtCompound bukkit =
-                            (NbtFactory.NbtCompound) compound.get("bukkit");
-                        String name = (String) bukkit.get("lastKnownName");
-                        StringWrapper wrap = new StringWrapper(name);
-                        if (!toAdd.containsKey(wrap)) {
-                            long last = (long) bukkit.get("lastPlayed");
-                            long first = (long) bukkit.get("firstPlayed");
-                            if (Settings.UUID.OFFLINE) {
-                                if (Settings.UUID.FORCE_LOWERCASE && !name.toLowerCase()
-                                    .equals(name)) {
-                                    uuid = FileUUIDHandler.this.uuidWrapper.getUUID(name);
-                                } else {
-                                    long most = (long) compound.get("UUIDMost");
-                                    long least = (long) compound.get("UUIDLeast");
-                                    uuid = new UUID(most, least);
-                                }
-                            }
-                            if (ExpireManager.IMP != null) {
-                                ExpireManager.IMP.storeDate(uuid, last);
-                                ExpireManager.IMP.storeAccountAge(uuid, last - first);
-                            }
-                            toAdd.put(wrap, uuid);
-                        }
-                    }
-                } catch (Exception ignored) {
-                    PlotSquared
-                        .debug(C.PREFIX + "&6Invalid PlayerData: " + uuid.toString() + ".dat");
-                }
-            }
-            for (String name : names) {
-                UUID uuid = FileUUIDHandler.this.uuidWrapper.getUUID(name);
-                StringWrapper nameWrap = new StringWrapper(name);
-                toAdd.put(nameWrap, uuid);
-            }
-
-            if (getUUIDMap().isEmpty()) {
-                for (OfflinePlotPlayer op : FileUUIDHandler.this.uuidWrapper.getOfflinePlayers()) {
-                    long last = op.getLastPlayed();
-                    if (last != 0) {
-                        String name = op.getName();
-                        StringWrapper wrap = new StringWrapper(name);
-                        if (!toAdd.containsKey(wrap)) {
-                            UUID uuid = FileUUIDHandler.this.uuidWrapper.getUUID(op);
-                            toAdd.put(wrap, uuid);
-                            if (ExpireManager.IMP != null) {
-                                ExpireManager.IMP.storeDate(uuid, last);
-                            }
-                        }
-                    }
-                }
-            }
-            add(toAdd);
-            if (whenDone != null) {
-                whenDone.run();
-            }
         });
         return true;
     }
 
     @Override public void fetchUUID(final String name, final RunnableVal<UUID> ifFetch) {
-        TaskManager.runTaskAsync(() -> {
-            ifFetch.value = FileUUIDHandler.this.uuidWrapper.getUUID(name);
-            TaskManager.runTask(ifFetch);
+        TaskManager.runTaskAsync(new Runnable() {
+            @Override public void run() {
+                ifFetch.value = FileUUIDHandler.this.uuidWrapper.getUUID(name);
+                TaskManager.runTask(ifFetch);
+            }
         });
     }
 }

Bukkit/src/main/java/com/github/intellectualsites/plotsquared/bukkit/uuid/SQLUUIDHandler.java

@@ -34,6 +34,7 @@ import java.util.UUID;
 
 public class SQLUUIDHandler extends UUIDHandlerImplementation {
 
+    final int MAX_REQUESTS = 500;
     private final String PROFILE_URL =
         "https://sessionserver.mojang.com/session/minecraft/profile/";
     private final int INTERVAL = 12000;
@@ -70,81 +71,96 @@ public class SQLUUIDHandler extends UUIDHandlerImplementation {
         if (!super.startCaching(whenDone)) {
             return false;
         }
-        TaskManager.runTaskAsync(() -> {
-            try {
-                HashBiMap<StringWrapper, UUID> toAdd = HashBiMap.create(new HashMap<>());
-                try (PreparedStatement statement = getConnection()
-                    .prepareStatement("SELECT `uuid`, `username` FROM `usercache`");
-                    ResultSet resultSet = statement.executeQuery()) {
-                    while (resultSet.next()) {
-                        StringWrapper username = new StringWrapper(resultSet.getString("username"));
-                        UUID uuid = UUID.fromString(resultSet.getString("uuid"));
-                        toAdd.put(new StringWrapper(username.value), uuid);
+        TaskManager.runTaskAsync(new Runnable() {
+            @Override public void run() {
+                try {
+                    HashBiMap<StringWrapper, UUID> toAdd =
+                        HashBiMap.create(new HashMap<StringWrapper, UUID>());
+                    try (PreparedStatement statement = getConnection()
+                        .prepareStatement("SELECT `uuid`, `username` FROM `usercache`");
+                        ResultSet resultSet = statement.executeQuery()) {
+                        while (resultSet.next()) {
+                            StringWrapper username =
+                                new StringWrapper(resultSet.getString("username"));
+                            UUID uuid = UUID.fromString(resultSet.getString("uuid"));
+                            toAdd.put(new StringWrapper(username.value), uuid);
+                        }
                     }
-                }
-                add(toAdd);
-                // This should be called as long as there are some unknown plots
-                final ArrayDeque<UUID> toFetch = new ArrayDeque<>();
-                for (UUID u : UUIDHandler.getAllUUIDS()) {
-                    if (!uuidExists(u)) {
-                        toFetch.add(u);
+                    add(toAdd);
+                    // This should be called as long as there are some unknown plots
+                    final ArrayDeque<UUID> toFetch = new ArrayDeque<>();
+                    for (UUID u : UUIDHandler.getAllUUIDS()) {
+                        if (!uuidExists(u)) {
+                            toFetch.add(u);
+                        }
                     }
-                }
-                if (toFetch.isEmpty()) {
-                    if (whenDone != null) {
-                        whenDone.run();
-                    }
-                    return;
-                }
-                FileUUIDHandler fileHandler = new FileUUIDHandler(SQLUUIDHandler.this.uuidWrapper);
-                fileHandler.startCaching(() -> {
-                    // If the file based UUID handler didn't cache it, then we can't cache offline mode
-                    // Also, trying to cache based on files again, is useless as that's what the file based uuid cacher does
-                    if (Settings.UUID.OFFLINE) {
+                    if (toFetch.isEmpty()) {
                         if (whenDone != null) {
                             whenDone.run();
                         }
                         return;
                     }
+                    FileUUIDHandler fileHandler =
+                        new FileUUIDHandler(SQLUUIDHandler.this.uuidWrapper);
+                    fileHandler.startCaching(new Runnable() {
+                        @Override public void run() {
+                            // If the file based UUID handler didn't cache it, then we can't cache offline mode
+                            // Also, trying to cache based on files again, is useless as that's what the file based uuid cacher does
+                            if (Settings.UUID.OFFLINE) {
+                                if (whenDone != null) {
+                                    whenDone.run();
+                                }
+                                return;
+                            }
 
-                    TaskManager.runTaskAsync(() -> {
-                        while (!toFetch.isEmpty()) {
-                            try {
-                                for (int i = 0; i < Math.min(500, toFetch.size()); i++) {
-                                    UUID uuid = toFetch.pop();
-                                    HttpURLConnection connection = (HttpURLConnection) new URL(
-                                        SQLUUIDHandler.this.PROFILE_URL + uuid.toString()
-                                            .replace("-", "")).openConnection();
-                                    try (InputStream con = connection.getInputStream()) {
-                                        InputStreamReader reader = new InputStreamReader(con);
-                                        JSONObject response =
-                                            (JSONObject) SQLUUIDHandler.this.jsonParser
-                                                .parse(reader);
-                                        String name = (String) response.get("name");
-                                        if (name != null) {
-                                            add(new StringWrapper(name), uuid);
+                            TaskManager.runTaskAsync(new Runnable() {
+                                @Override public void run() {
+                                    while (!toFetch.isEmpty()) {
+                                        try {
+                                            for (int i = 0;
+                                                 i < Math.min(500, toFetch.size()); i++) {
+                                                UUID uuid = toFetch.pop();
+                                                HttpURLConnection connection =
+                                                    (HttpURLConnection) new URL(
+                                                        SQLUUIDHandler.this.PROFILE_URL + uuid
+                                                            .toString().replace("-", ""))
+                                                        .openConnection();
+                                                try (InputStream con = connection
+                                                    .getInputStream()) {
+                                                    InputStreamReader reader =
+                                                        new InputStreamReader(con);
+                                                    JSONObject response =
+                                                        (JSONObject) SQLUUIDHandler.this.jsonParser
+                                                            .parse(reader);
+                                                    String name = (String) response.get("name");
+                                                    if (name != null) {
+                                                        add(new StringWrapper(name), uuid);
+                                                    }
+                                                }
+                                                connection.disconnect();
+                                            }
+                                        } catch (IOException | ParseException e) {
+                                            PlotSquared.debug(
+                                                "Invalid response from Mojang: Some UUIDs will be cached later. (`unknown` until then or player joins)");
+                                        }
+                                        try {
+                                            Thread.sleep(INTERVAL * 50);
+                                        } catch (InterruptedException e) {
+                                            e.printStackTrace();
+                                            break;
                                         }
                                     }
-                                    connection.disconnect();
+                                    if (whenDone != null) {
+                                        whenDone.run();
+                                    }
+                                    return;
                                 }
-                            } catch (IOException | ParseException e) {
-                                PlotSquared.debug(
-                                    "Invalid response from Mojang: Some UUIDs will be cached later. (`unknown` until then or player joins)");
-                            }
-                            try {
-                                Thread.sleep(INTERVAL * 50);
-                            } catch (InterruptedException e) {
-                                e.printStackTrace();
-                                break;
-                            }
-                        }
-                        if (whenDone != null) {
-                            whenDone.run();
+                            });
                         }
                     });
-                });
-            } catch (SQLException e) {
-                throw new SQLUUIDHandlerException("Couldn't select :s", e);
+                } catch (SQLException e) {
+                    throw new SQLUUIDHandlerException("Couldn't select :s", e);
+                }
             }
         });
         return true;
@@ -156,32 +172,34 @@ public class SQLUUIDHandler extends UUIDHandlerImplementation {
         if (ifFetch == null) {
             return;
         }
-        TaskManager.runTaskAsync(() -> {
-            try {
-                URL url = new URL(SQLUUIDHandler.this.PROFILE_URL);
-                HttpURLConnection connection = (HttpURLConnection) url.openConnection();
-                connection.setRequestMethod("POST");
-                connection.setRequestProperty("Content-Type", "application/json");
-                connection.setUseCaches(false);
-                connection.setDoInput(true);
-                connection.setDoOutput(true);
-                String body = JSONArray.toJSONString(Collections.singletonList(name));
-                OutputStream stream = connection.getOutputStream();
-                stream.write(body.getBytes());
-                stream.flush();
-                stream.close();
-                JSONArray array = (JSONArray) SQLUUIDHandler.this.jsonParser
-                    .parse(new InputStreamReader(connection.getInputStream()));
-                JSONObject jsonProfile = (JSONObject) array.get(0);
-                String id = (String) jsonProfile.get("id");
-                String name1 = (String) jsonProfile.get("name");
-                ifFetch.value = UUID.fromString(
-                    id.substring(0, 8) + '-' + id.substring(8, 12) + '-' + id.substring(12, 16)
-                        + '-' + id.substring(16, 20) + '-' + id.substring(20, 32));
-            } catch (IOException | ParseException e) {
-                e.printStackTrace();
+        TaskManager.runTaskAsync(new Runnable() {
+            @Override public void run() {
+                try {
+                    URL url = new URL(SQLUUIDHandler.this.PROFILE_URL);
+                    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
+                    connection.setRequestMethod("POST");
+                    connection.setRequestProperty("Content-Type", "application/json");
+                    connection.setUseCaches(false);
+                    connection.setDoInput(true);
+                    connection.setDoOutput(true);
+                    String body = JSONArray.toJSONString(Collections.singletonList(name));
+                    OutputStream stream = connection.getOutputStream();
+                    stream.write(body.getBytes());
+                    stream.flush();
+                    stream.close();
+                    JSONArray array = (JSONArray) SQLUUIDHandler.this.jsonParser
+                        .parse(new InputStreamReader(connection.getInputStream()));
+                    JSONObject jsonProfile = (JSONObject) array.get(0);
+                    String id = (String) jsonProfile.get("id");
+                    String name = (String) jsonProfile.get("name");
+                    ifFetch.value = UUID.fromString(
+                        id.substring(0, 8) + '-' + id.substring(8, 12) + '-' + id.substring(12, 16)
+                            + '-' + id.substring(16, 20) + '-' + id.substring(20, 32));
+                } catch (IOException | ParseException e) {
+                    e.printStackTrace();
+                }
+                TaskManager.runTask(ifFetch);
             }
-            TaskManager.runTask(ifFetch);
         });
     }
 
@@ -197,15 +215,18 @@ public class SQLUUIDHandler extends UUIDHandlerImplementation {
     @Override public boolean add(final StringWrapper name, final UUID uuid) {
         // Ignoring duplicates
         if (super.add(name, uuid)) {
-            TaskManager.runTaskAsync(() -> {
-                try (PreparedStatement statement = getConnection()
-                    .prepareStatement("REPLACE INTO usercache (`uuid`, `username`) VALUES(?, ?)")) {
-                    statement.setString(1, uuid.toString());
-                    statement.setString(2, name.toString());
-                    statement.execute();
-                    PlotSquared.debug(C.PREFIX + "&cAdded '&6" + uuid + "&c' - '&6" + name + "&c'");
-                } catch (SQLException e) {
-                    e.printStackTrace();
+            TaskManager.runTaskAsync(new Runnable() {
+                @Override public void run() {
+                    try (PreparedStatement statement = getConnection().prepareStatement(
+                        "REPLACE INTO usercache (`uuid`, `username`) VALUES(?, ?)")) {
+                        statement.setString(1, uuid.toString());
+                        statement.setString(2, name.toString());
+                        statement.execute();
+                        PlotSquared
+                            .debug(C.PREFIX + "&cAdded '&6" + uuid + "&c' - '&6" + name + "&c'");
+                    } catch (SQLException e) {
+                        e.printStackTrace();
+                    }
                 }
             });
             return true;
@@ -218,16 +239,18 @@ public class SQLUUIDHandler extends UUIDHandlerImplementation {
      */
     @Override public void rename(final UUID uuid, final StringWrapper name) {
         super.rename(uuid, name);
-        TaskManager.runTaskAsync(() -> {
-            try (PreparedStatement statement = getConnection()
-                .prepareStatement("UPDATE usercache SET `username`=? WHERE `uuid`=?")) {
-                statement.setString(1, name.value);
-                statement.setString(2, uuid.toString());
-                statement.execute();
-                PlotSquared
-                    .debug(C.PREFIX + "Name change for '" + uuid + "' to '" + name.value + '\'');
-            } catch (SQLException e) {
-                e.printStackTrace();
+        TaskManager.runTaskAsync(new Runnable() {
+            @Override public void run() {
+                try (PreparedStatement statement = getConnection()
+                    .prepareStatement("UPDATE usercache SET `username`=? WHERE `uuid`=?")) {
+                    statement.setString(1, name.value);
+                    statement.setString(2, uuid.toString());
+                    statement.execute();
+                    PlotSquared.debug(
+                        C.PREFIX + "Name change for '" + uuid + "' to '" + name.value + '\'');
+                } catch (SQLException e) {
+                    e.printStackTrace();
+                }
             }
         });
     }

Core/src/main/java/com/github/intellectualsites/plotsquared/commands/Command.java

@@ -10,10 +10,7 @@ import com.github.intellectualsites.plotsquared.plot.object.PlotMessage;
 import com.github.intellectualsites.plotsquared.plot.object.PlotPlayer;
 import com.github.intellectualsites.plotsquared.plot.object.RunnableVal2;
 import com.github.intellectualsites.plotsquared.plot.object.RunnableVal3;
-import com.github.intellectualsites.plotsquared.plot.util.MainUtil;
-import com.github.intellectualsites.plotsquared.plot.util.Permissions;
-import com.github.intellectualsites.plotsquared.plot.util.StringComparison;
-import com.github.intellectualsites.plotsquared.plot.util.StringMan;
+import com.github.intellectualsites.plotsquared.plot.util.*;
 
 import java.io.IOException;
 import java.lang.annotation.Annotation;
@@ -50,7 +47,7 @@ public abstract class Command {
         this.perm = perm;
         this.required = required;
         this.category = cat;
-        this.aliases = Collections.singletonList(id);
+        this.aliases = Arrays.asList(id);
         if (this.parent != null) {
             this.parent.register(this);
         }
@@ -117,7 +114,12 @@ public abstract class Command {
     public List<Command> getCommands(CommandCategory cat, PlotPlayer player) {
         List<Command> commands = getCommands(player);
         if (cat != null) {
-            commands.removeIf(command -> command.category != cat);
+            Iterator<Command> iterator = commands.iterator();
+            while (iterator.hasNext()) {
+                if (iterator.next().category != cat) {
+                    iterator.remove();
+                }
+            }
         }
         return commands;
     }
@@ -247,7 +249,8 @@ public abstract class Command {
         }
         if (page == 0 && totalPages != 0) { // Next
             new PlotMessage().text("<-").color("$3").text(" | ").color("$3").text("->").color("$1")
-                .command(baseCommand + " " + 2).text(C.CLICKABLE.s()).color("$2").send(player);
+                .command(baseCommand + " " + (0 + 2)).text(C.CLICKABLE.s()).color("$2")
+                .send(player);
             return;
         }
         if (page == totalPages && totalPages != 0) { // Back
@@ -273,7 +276,7 @@ public abstract class Command {
             }
             return;
         }
-        if (this.allCommands.isEmpty()) {
+        if (this.allCommands == null || this.allCommands.isEmpty()) {
             player.sendMessage(
                 "Not Implemented: https://github.com/IntellectualSites/PlotSquared/issues/new");
             return;
@@ -286,10 +289,13 @@ public abstract class Command {
             }
             // Help command
             try {
-                // This will default certain syntax to the help command
-                // e.g. /plot, /plot 1, /plot claiming
-                MainCommand.getInstance().help.execute(player, args, null, null);
-                return;
+                if (args.length == 0 || MathMan.isInteger(args[0])
+                    || CommandCategory.valueOf(args[0].toUpperCase()) != null) {
+                    // This will default certain syntax to the help command
+                    // e.g. /plot, /plot 1, /plot claiming
+                    MainCommand.getInstance().help.execute(player, args, null, null);
+                    return;
+                }
             } catch (IllegalArgumentException ignored) {
             }
             // Command recommendation
@@ -335,6 +341,7 @@ public abstract class Command {
             boolean failed = args.length < reqArgs.length;
             String[] baseSplit = getCommandString().split(" ");
             String[] fullSplit = getUsage().split(" ");
+            String base = getCommandString();
             if (fullSplit.length - baseSplit.length < reqArgs.length) {
                 String[] tmp = new String[baseSplit.length + reqArgs.length];
                 System.arraycopy(fullSplit, 0, tmp, 0, fullSplit.length);
@@ -450,6 +457,7 @@ public abstract class Command {
     }
 
     public String getCommandString() {
+        String base;
         if (this.parent == null) {
             return "/" + toString();
         } else {
@@ -482,7 +490,7 @@ public abstract class Command {
             return null;
         }
         List<Command> result = new ArrayList<>();
-        int index = input.length;
+        int index = input.length - (space ? 0 : 1);
         for (String arg : args) {
             arg = arg.replace(getCommandString() + " ", "");
             String[] split = arg.split(" ");
@@ -511,7 +519,7 @@ public abstract class Command {
                         return null;
                     }
                 } else {
-                    Set<Command> commands = new HashSet<>();
+                    Set<Command> commands = new HashSet<Command>();
                     for (Map.Entry<String, Command> entry : this.staticCommands.entrySet()) {
                         if (entry.getKey().startsWith(arg) && entry.getValue()
                             .canExecute(player, false)) {
@@ -558,7 +566,7 @@ public abstract class Command {
         }
     }
 
-    public <T> T check(T object, C message, Object... args) {
+    public <T extends Object> T check(T object, C message, Object... args) {
         if (object == null) {
             throw new CommandException(message, args);
         }

Core/src/main/java/com/github/intellectualsites/plotsquared/configuration/file/YamlConfiguration.java

@@ -83,7 +83,7 @@ public class YamlConfiguration extends FileConfiguration {
 
         Map<?, ?> input;
         try {
-            input = yaml.load(contents);
+            input = (Map<?, ?>) yaml.load(contents);
         } catch (YAMLException e) {
             throw new InvalidConfigurationException(e);
         } catch (ClassCastException ignored) {

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/PlotVersion.java

@@ -33,8 +33,8 @@ public class PlotVersion {
     public static PlotVersion tryParse(String version) {
         try {
             return new PlotVersion(version);
-        } catch (Exception e) {
-            e.printStackTrace();
+        } catch (Exception ignore) {
+            ignore.printStackTrace();
             return new PlotVersion(0, 0, 0, 0, 0);
         }
     }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Add.java

@@ -61,19 +61,21 @@ import java.util.UUID;
         checkTrue(!uuids.isEmpty(), null);
         checkTrue(size <= plot.getArea().MAX_PLOT_MEMBERS || Permissions
             .hasPermission(player, C.PERMISSION_ADMIN_COMMAND_TRUST), C.PLOT_MAX_MEMBERS);
-        // Success
-        confirm.run(this, () -> {
-            for (UUID uuid : uuids) {
-                if (uuid != DBFunc.EVERYONE) {
-                    if (!plot.removeTrusted(uuid)) {
-                        if (plot.getDenied().contains(uuid)) {
-                            plot.removeDenied(uuid);
+        confirm.run(this, new Runnable() {
+            @Override // Success
+            public void run() {
+                for (UUID uuid : uuids) {
+                    if (uuid != DBFunc.EVERYONE) {
+                        if (!plot.removeTrusted(uuid)) {
+                            if (plot.getDenied().contains(uuid)) {
+                                plot.removeDenied(uuid);
+                            }
                         }
                     }
+                    plot.addMember(uuid);
+                    EventUtil.manager.callMember(player, plot, uuid, true);
+                    MainUtil.sendMessage(player, C.MEMBER_ADDED);
                 }
-                plot.addMember(uuid);
-                EventUtil.manager.callMember(player, plot, uuid, true);
-                MainUtil.sendMessage(player, C.MEMBER_ADDED);
             }
         }, null);
     }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Area.java

@@ -98,40 +98,42 @@ import java.util.Set;
                                 object.type = area.TYPE;
                                 object.min = new PlotId(1, 1);
                                 object.max = new PlotId(numX, numZ);
-                                object.plotManager = PlotSquared.get().IMP.getPluginName();
-                                object.setupGenerator = PlotSquared.get().IMP.getPluginName();
+                                object.plotManager = PlotSquared.imp().getPluginName();
+                                object.setupGenerator = PlotSquared.imp().getPluginName();
                                 object.step = area.getSettingNodes();
                                 final String path =
                                     "worlds." + area.worldname + ".areas." + area.id + '-'
                                         + object.min + '-' + object.max;
-                                Runnable run = () -> {
-                                    if (offsetX != 0) {
-                                        PlotSquared.get().worlds
-                                            .set(path + ".road.offset.x", offsetX);
-                                    }
-                                    if (offsetZ != 0) {
-                                        PlotSquared.get().worlds
-                                            .set(path + ".road.offset.z", offsetZ);
-                                    }
-                                    final String world = SetupUtils.manager.setupWorld(object);
-                                    if (WorldUtil.IMP.isWorld(world)) {
-                                        PlotSquared.get().loadWorld(world, null);
-                                        C.SETUP_FINISHED.send(player);
-                                        player.teleport(WorldUtil.IMP.getSpawn(world));
-                                        if (area.TERRAIN != 3) {
-                                            ChunkManager.largeRegionTask(world, region,
-                                                new RunnableVal<ChunkLoc>() {
-                                                    @Override public void run(ChunkLoc value) {
-                                                        AugmentedUtils
-                                                            .generate(world, value.x, value.z,
-                                                                null);
-                                                    }
-                                                }, null);
+                                Runnable run = new Runnable() {
+                                    @Override public void run() {
+                                        if (offsetX != 0) {
+                                            PlotSquared.get().worlds
+                                                .set(path + ".road.offset.x", offsetX);
+                                        }
+                                        if (offsetZ != 0) {
+                                            PlotSquared.get().worlds
+                                                .set(path + ".road.offset.z", offsetZ);
+                                        }
+                                        final String world = SetupUtils.manager.setupWorld(object);
+                                        if (WorldUtil.IMP.isWorld(world)) {
+                                            PlotSquared.get().loadWorld(world, null);
+                                            C.SETUP_FINISHED.send(player);
+                                            player.teleport(WorldUtil.IMP.getSpawn(world));
+                                            if (area.TERRAIN != 3) {
+                                                ChunkManager.largeRegionTask(world, region,
+                                                    new RunnableVal<ChunkLoc>() {
+                                                        @Override public void run(ChunkLoc value) {
+                                                            AugmentedUtils
+                                                                .generate(world, value.x, value.z,
+                                                                    null);
+                                                        }
+                                                    }, null);
+                                            }
+                                        } else {
+                                            MainUtil.sendMessage(player,
+                                                "An error occurred while creating the world: "
+                                                    + area.worldname);
                                         }
-                                    } else {
-                                        MainUtil.sendMessage(player,
-                                            "An error occurred while creating the world: "
-                                                + area.worldname);
                                     }
                                 };
                                 if (hasConfirmation(player)) {
@@ -226,30 +228,32 @@ import java.util.Set;
                                 C.SETUP_WORLD_TAKEN.send(player, pa.worldname);
                                 return false;
                             }
-                            Runnable run = () -> {
-                                String path = "worlds." + pa.worldname;
-                                if (!PlotSquared.get().worlds.contains(path)) {
-                                    PlotSquared.get().worlds.createSection(path);
-                                }
-                                ConfigurationSection section =
-                                    PlotSquared.get().worlds.getConfigurationSection(path);
-                                pa.saveConfiguration(section);
-                                pa.loadConfiguration(section);
-                                object.plotManager = PlotSquared.get().IMP.getPluginName();
-                                object.setupGenerator = PlotSquared.get().IMP.getPluginName();
-                                String world = SetupUtils.manager.setupWorld(object);
-                                if (WorldUtil.IMP.isWorld(world)) {
-                                    C.SETUP_FINISHED.send(player);
-                                    player.teleport(WorldUtil.IMP.getSpawn(world));
-                                } else {
-                                    MainUtil.sendMessage(player,
-                                        "An error occurred while creating the world: "
-                                            + pa.worldname);
-                                }
-                                try {
-                                    PlotSquared.get().worlds.save(PlotSquared.get().worldsFile);
-                                } catch (IOException e) {
-                                    e.printStackTrace();
+                            Runnable run = new Runnable() {
+                                @Override public void run() {
+                                    String path = "worlds." + pa.worldname;
+                                    if (!PlotSquared.get().worlds.contains(path)) {
+                                        PlotSquared.get().worlds.createSection(path);
+                                    }
+                                    ConfigurationSection section =
+                                        PlotSquared.get().worlds.getConfigurationSection(path);
+                                    pa.saveConfiguration(section);
+                                    pa.loadConfiguration(section);
+                                    object.plotManager = PlotSquared.imp().getPluginName();
+                                    object.setupGenerator = PlotSquared.imp().getPluginName();
+                                    String world = SetupUtils.manager.setupWorld(object);
+                                    if (WorldUtil.IMP.isWorld(world)) {
+                                        C.SETUP_FINISHED.send(player);
+                                        player.teleport(WorldUtil.IMP.getSpawn(world));
+                                    } else {
+                                        MainUtil.sendMessage(player,
+                                            "An error occurred while creating the world: "
+                                                + pa.worldname);
+                                    }
+                                    try {
+                                        PlotSquared.get().worlds.save(PlotSquared.get().worldsFile);
+                                    } catch (IOException e) {
+                                        e.printStackTrace();
+                                    }
                                 }
                             };
                             if (hasConfirmation(player)) {
@@ -418,7 +422,11 @@ import java.util.Set;
                         @Override public void run(ChunkLoc value) {
                             AugmentedUtils.generate(area.worldname, value.x, value.z, null);
                         }
-                    }, () -> player.sendMessage("Regen complete"));
+                    }, new Runnable() {
+                        @Override public void run() {
+                            player.sendMessage("Regen complete");
+                        }
+                    });
                 return true;
             }
             case "goto":
@@ -456,7 +464,7 @@ import java.util.Set;
             case "remove":
                 MainUtil.sendMessage(player,
                     "$1World creation settings may be stored in multiple locations:"
-                        + "\n$3 - $2Bukkit bukkit.yml" + "\n$3 - $2" + PlotSquared.get().IMP
+                        + "\n$3 - $2Bukkit bukkit.yml" + "\n$3 - $2" + PlotSquared.imp()
                         .getPluginName() + " settings.yml"
                         + "\n$3 - $2Multiverse worlds.yml (or any world management plugin)"
                         + "\n$1Stop the server and delete it from these locations.");

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Auto.java

@@ -16,6 +16,10 @@ import java.util.Set;
     description = "Claim the nearest plot", aliases = "a", usage = "/plot auto [length,width]")
 public class Auto extends SubCommand {
 
+    @Deprecated public static PlotId getNextPlotId(PlotId id, int step) {
+        return id.getNextId(step);
+    }
+
     private static boolean checkAllowedPlots(PlotPlayer player, PlotArea plotarea,
         @Nullable Integer allowed_plots, int size_x, int size_z) {
         if (allowed_plots == null)
@@ -124,9 +128,12 @@ public class Auto extends SubCommand {
             return;
         }
         whenDone.value = plot;
-        plot.setOwner(player.getUUID());
-        DBFunc.createPlotSafe(plot, whenDone,
-            () -> autoClaimFromDatabase(player, area, plot.getId(), whenDone));
+        plot.owner = player.getUUID();
+        DBFunc.createPlotSafe(plot, whenDone, new Runnable() {
+            @Override public void run() {
+                autoClaimFromDatabase(player, area, plot.getId(), whenDone);
+            }
+        });
     }
 
     @Override public boolean onCommand(final PlotPlayer player, String[] args) {

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Biome.java

@@ -27,9 +27,11 @@ import com.github.intellectualsites.plotsquared.plot.util.WorldUtil;
             return false;
         }
         plot.addRunning();
-        plot.setBiome(value.toUpperCase(), () -> {
-            plot.removeRunning();
-            MainUtil.sendMessage(player, C.BIOME_SET_TO.s() + value.toLowerCase());
+        plot.setBiome(value.toUpperCase(), new Runnable() {
+            @Override public void run() {
+                plot.removeRunning();
+                MainUtil.sendMessage(player, C.BIOME_SET_TO.s() + value.toLowerCase());
+            }
         });
         return true;
     }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Buy.java

@@ -46,24 +46,27 @@ import java.util.Set;
         final double price = flag.get();
         checkTrue(player.getMoney() >= price, C.CANNOT_AFFORD_PLOT);
         player.withdraw(price);
-        // Failure
-        // Success
-        confirm.run(this, () -> {
-            C.REMOVED_BALANCE.send(player, price);
-            EconHandler.manager
-                .depositMoney(UUIDHandler.getUUIDWrapper().getOfflinePlayer(plot.guessOwner()),
-                    price);
-            PlotPlayer owner = UUIDHandler.getPlayer(plot.guessOwner());
-            if (owner != null) {
-                C.PLOT_SOLD.send(owner, plot.getId(), player.getName(), price);
+        confirm.run(this, new Runnable() {
+            @Override // Success
+            public void run() {
+                C.REMOVED_BALANCE.send(player, price);
+                EconHandler.manager
+                    .depositMoney(UUIDHandler.getUUIDWrapper().getOfflinePlayer(plot.owner), price);
+                PlotPlayer owner = UUIDHandler.getPlayer(plot.owner);
+                if (owner != null) {
+                    C.PLOT_SOLD.send(owner, plot.getId(), player.getName(), price);
+                }
+                plot.removeFlag(Flags.PRICE);
+                plot.setOwner(player.getUUID());
+                C.CLAIMED.send(player);
+                whenDone.run(Buy.this, CommandResult.SUCCESS);
+            }
+        }, new Runnable() {
+            @Override // Failure
+            public void run() {
+                player.deposit(price);
+                whenDone.run(Buy.this, CommandResult.FAILURE);
             }
-            plot.removeFlag(Flags.PRICE);
-            plot.setOwner(player.getUUID());
-            C.CLAIMED.send(player);
-            whenDone.run(Buy.this, CommandResult.SUCCESS);
-        }, () -> {
-            player.deposit(price);
-            whenDone.run(Buy.this, CommandResult.FAILURE);
         });
     }
 }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Claim.java

@@ -80,16 +80,24 @@ public class Claim extends SubCommand {
             sendMessage(player, C.REMOVED_GRANTED_PLOT, "1", "" + (grants - 1));
         }
         if (plot.canClaim(player)) {
-            plot.setOwner(player.getUUID());
+            plot.owner = player.getUUID();
             final String finalSchematic = schematic;
-            DBFunc.createPlotSafe(plot, () -> TaskManager.IMP.sync(new RunnableVal<Object>() {
-                @Override public void run(Object value) {
-                    plot.claim(player, true, finalSchematic, false);
-                    if (area.AUTO_MERGE) {
-                        plot.autoMerge(-1, Integer.MAX_VALUE, player.getUUID(), true);
-                    }
+            DBFunc.createPlotSafe(plot, new Runnable() {
+                @Override public void run() {
+                    TaskManager.IMP.sync(new RunnableVal<Object>() {
+                        @Override public void run(Object value) {
+                            plot.claim(player, true, finalSchematic, false);
+                            if (area.AUTO_MERGE) {
+                                plot.autoMerge(-1, Integer.MAX_VALUE, player.getUUID(), true);
+                            }
+                        }
+                    });
                 }
-            }), () -> sendMessage(player, C.PLOT_NOT_CLAIMED));
+            }, new Runnable() {
+                @Override public void run() {
+                    sendMessage(player, C.PLOT_NOT_CLAIMED);
+                }
+            });
             return true;
         } else {
             sendMessage(player, C.PLOT_NOT_CLAIMED);

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Clear.java

@@ -35,27 +35,33 @@ import com.github.intellectualsites.plotsquared.plot.util.block.GlobalBlockQueue
         checkTrue(plot.getRunning() == 0, C.WAIT_FOR_TIMER);
         checkTrue(!Settings.Done.RESTRICT_BUILDING || !Flags.DONE.isSet(plot) || Permissions
             .hasPermission(player, C.PERMISSION_CONTINUE), C.DONE_ALREADY_DONE);
-        confirm.run(this, () -> {
-            final long start = System.currentTimeMillis();
-            boolean result = plot.clear(true, false, () -> {
-                plot.unlink();
-                GlobalBlockQueue.IMP.addTask(() -> {
-                    plot.removeRunning();
-                    // If the state changes, then mark it as no longer done
-                    if (plot.getFlag(Flags.DONE).isPresent()) {
-                        FlagManager.removePlotFlag(plot, Flags.DONE);
+        confirm.run(this, new Runnable() {
+            @Override public void run() {
+                final long start = System.currentTimeMillis();
+                boolean result = plot.clear(true, false, new Runnable() {
+                    @Override public void run() {
+                        plot.unlink();
+                        GlobalBlockQueue.IMP.addTask(new Runnable() {
+                            @Override public void run() {
+                                plot.removeRunning();
+                                // If the state changes, then mark it as no longer done
+                                if (plot.getFlag(Flags.DONE).isPresent()) {
+                                    FlagManager.removePlotFlag(plot, Flags.DONE);
+                                }
+                                if (plot.getFlag(Flags.ANALYSIS).isPresent()) {
+                                    FlagManager.removePlotFlag(plot, Flags.ANALYSIS);
+                                }
+                                MainUtil.sendMessage(player, C.CLEARING_DONE,
+                                    "" + (System.currentTimeMillis() - start));
+                            }
+                        });
                     }
-                    if (plot.getFlag(Flags.ANALYSIS).isPresent()) {
-                        FlagManager.removePlotFlag(plot, Flags.ANALYSIS);
-                    }
-                    MainUtil.sendMessage(player, C.CLEARING_DONE,
-                        "" + (System.currentTimeMillis() - start));
                 });
-            });
-            if (!result) {
-                MainUtil.sendMessage(player, C.WAIT_FOR_TIMER);
-            } else {
-                plot.addRunning();
+                if (!result) {
+                    MainUtil.sendMessage(player, C.WAIT_FOR_TIMER);
+                } else {
+                    plot.addRunning();
+                }
             }
         }, null);
     }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Cluster.java

@@ -148,9 +148,9 @@ import java.util.UUID;
                 // Add any existing plots to the current cluster
                 for (Plot plot : plots) {
                     if (plot.hasOwner()) {
-                        if (!cluster.isAdded(plot.guessOwner())) {
-                            cluster.invited.add(plot.guessOwner());
-                            DBFunc.setInvited(cluster, plot.guessOwner());
+                        if (!cluster.isAdded(plot.owner)) {
+                            cluster.invited.add(plot.owner);
+                            DBFunc.setInvited(cluster, plot.owner);
                         }
                     }
                 }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Condense.java

@@ -97,7 +97,7 @@ import java.util.concurrent.atomic.AtomicBoolean;
                     if (plot != null && !plot.hasOwner()) {
                         free.add(plot.getId());
                     }
-                    start = start.getNextId(1);
+                    start = Auto.getNextPlotId(start, 1);
                 }
                 if (free.isEmpty() || toMove.isEmpty()) {
                     MainUtil.sendMessage(player, "NO FREE PLOTS FOUND");
@@ -126,11 +126,13 @@ import java.util.concurrent.atomic.AtomicBoolean;
                             }
                             i++;
                             final AtomicBoolean result = new AtomicBoolean(false);
-                            result.set(origin.move(possible, () -> {
-                                if (result.get()) {
-                                    MainUtil.sendMessage(player,
-                                        "Moving: " + origin + " -> " + possible);
-                                    TaskManager.runTaskLater(task, 1);
+                            result.set(origin.move(possible, new Runnable() {
+                                @Override public void run() {
+                                    if (result.get()) {
+                                        MainUtil.sendMessage(player,
+                                            "Moving: " + origin + " -> " + possible);
+                                        TaskManager.runTaskLater(task, 1);
+                                    }
                                 }
                             }, false));
                             if (result.get()) {

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Copy.java

@@ -40,7 +40,11 @@ import com.github.intellectualsites.plotsquared.plot.util.Permissions;
             C.PLOTWORLD_INCOMPATIBLE.send(player);
             return false;
         }
-        if (plot1.copy(plot2, () -> MainUtil.sendMessage(player, C.COPY_SUCCESS))) {
+        if (plot1.copy(plot2, new Runnable() {
+            @Override public void run() {
+                MainUtil.sendMessage(player, C.COPY_SUCCESS);
+            }
+        })) {
             return true;
         } else {
             MainUtil.sendMessage(player, C.REQUIRES_UNOWNED);

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Database.java

@@ -30,18 +30,25 @@ import java.util.Map.Entry;
 
     public static void insertPlots(final SQLManager manager, final List<Plot> plots,
         final PlotPlayer player) {
-        TaskManager.runTaskAsync(() -> {
-            try {
-                ArrayList<Plot> ps = new ArrayList<>(plots);
-                MainUtil.sendMessage(player, "&6Starting...");
-                manager.createPlotsAndData(ps, () -> {
-                    MainUtil.sendMessage(player, "&6Database conversion finished!");
-                    manager.close();
-                });
-            } catch (Exception e) {
-                MainUtil
-                    .sendMessage(player, "Failed to insert plot objects, see stacktrace for info");
-                e.printStackTrace();
+        TaskManager.runTaskAsync(new Runnable() {
+            @Override public void run() {
+                try {
+                    ArrayList<Plot> ps = new ArrayList<>();
+                    for (Plot p : plots) {
+                        ps.add(p);
+                    }
+                    MainUtil.sendMessage(player, "&6Starting...");
+                    manager.createPlotsAndData(ps, new Runnable() {
+                        @Override public void run() {
+                            MainUtil.sendMessage(player, "&6Database conversion finished!");
+                            manager.close();
+                        }
+                    });
+                } catch (Exception e) {
+                    MainUtil.sendMessage(player,
+                        "Failed to insert plot objects, see stacktrace for info");
+                    e.printStackTrace();
+                }
             }
         });
     }
@@ -99,12 +106,12 @@ import java.util.Map.Entry;
                                             PlotId newId = newPlot.getId();
                                             PlotId id = plot.getId();
                                             File worldFile =
-                                                new File(PlotSquared.get().IMP.getWorldContainer(),
+                                                new File(PlotSquared.imp().getWorldContainer(),
                                                     id.toCommaSeparatedString());
                                             if (worldFile.exists()) {
-                                                File newFile = new File(
-                                                    PlotSquared.get().IMP.getWorldContainer(),
-                                                    newId.toCommaSeparatedString());
+                                                File newFile =
+                                                    new File(PlotSquared.imp().getWorldContainer(),
+                                                        newId.toCommaSeparatedString());
                                                 worldFile.renameTo(newFile);
                                             }
                                             id.x = newId.x;
@@ -123,13 +130,20 @@ import java.util.Map.Entry;
                                 plots.add(plot);
                             }
                         } else {
-                            HashMap<PlotId, Plot> plotmap = PlotSquared.get().plots_tmp
-                                .computeIfAbsent(areaname, k -> new HashMap<>());
+                            HashMap<PlotId, Plot> plotmap =
+                                PlotSquared.get().plots_tmp.get(areaname);
+                            if (plotmap == null) {
+                                plotmap = new HashMap<>();
+                                PlotSquared.get().plots_tmp.put(areaname, plotmap);
+                            }
                             plotmap.putAll(entry.getValue());
                         }
                     }
-                    DBFunc.createPlotsAndData(plots,
-                        () -> MainUtil.sendMessage(player, "&6Database conversion finished!"));
+                    DBFunc.createPlotsAndData(plots, new Runnable() {
+                        @Override public void run() {
+                            MainUtil.sendMessage(player, "&6Database conversion finished!");
+                        }
+                    });
                     return true;
                 case "mysql":
                     if (args.length < 6) {

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/DebugClaimTest.java

@@ -34,6 +34,8 @@ public class DebugClaimTest extends SubCommand {
         }
         PlotId min, max;
         try {
+            args[1].split(";");
+            args[2].split(";");
             min = PlotId.fromString(args[1]);
             max = PlotId.fromString(args[2]);
         } catch (Exception ignored) {
@@ -94,8 +96,11 @@ public class DebugClaimTest extends SubCommand {
         if (!plots.isEmpty()) {
             MainUtil.sendMessage(player,
                 "&3Sign Block&8->&3Plot&8: &7Updating '" + plots.size() + "' plots!");
-            DBFunc.createPlotsAndData(plots,
-                () -> MainUtil.sendMessage(player, "&6Database update finished!"));
+            DBFunc.createPlotsAndData(plots, new Runnable() {
+                @Override public void run() {
+                    MainUtil.sendMessage(player, "&6Database update finished!");
+                }
+            });
             for (Plot plot : plots) {
                 plot.create();
             }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/DebugExec.java

@@ -46,8 +46,8 @@ import java.util.*;
                     this.engine.eval(script, this.scope);
                 }
             }
-        } catch (IOException | ScriptException e) {
-            e.printStackTrace();
+        } catch (IOException | ScriptException ignored) {
+            ignored.printStackTrace();
         }
     }
 
@@ -164,8 +164,11 @@ import java.util.*;
                             "$1<threshold> $2= $1The percentage of plots you want to clear as a number between 0 - 100");
                         return false;
                     }
-                    PlotAnalysis.calcOptimalModifiers(() -> MainUtil
-                        .sendMessage(player, "$1Thank you for calibrating plot expiry"), threshold);
+                    PlotAnalysis.calcOptimalModifiers(new Runnable() {
+                        @Override public void run() {
+                            MainUtil.sendMessage(player, "$1Thank you for calibrating plot expiry");
+                        }
+                    }, threshold);
                     return true;
                 case "stop-expire":
                     if (ExpireManager.IMP == null || !ExpireManager.IMP.cancelTask()) {
@@ -401,16 +404,18 @@ import java.util.*;
             try {
                 if (async) {
                     final String toExec = script;
-                    TaskManager.runTaskAsync(() -> {
-                        long start = System.currentTimeMillis();
-                        Object result = null;
-                        try {
-                            result = DebugExec.this.engine.eval(toExec, DebugExec.this.scope);
-                        } catch (ScriptException e) {
-                            e.printStackTrace();
+                    TaskManager.runTaskAsync(new Runnable() {
+                        @Override public void run() {
+                            long start = System.currentTimeMillis();
+                            Object result = null;
+                            try {
+                                result = DebugExec.this.engine.eval(toExec, DebugExec.this.scope);
+                            } catch (ScriptException e) {
+                                e.printStackTrace();
+                            }
+                            PlotSquared.log(
+                                "> " + (System.currentTimeMillis() - start) + "ms -> " + result);
                         }
-                        PlotSquared
-                            .log("> " + (System.currentTimeMillis() - start) + "ms -> " + result);
                     });
                 } else {
                     long start = System.currentTimeMillis();

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/DebugImportWorlds.java

@@ -35,7 +35,7 @@ import java.util.UUID;
         }
         SinglePlotArea area = ((SinglePlotAreaManager) pam).getArea();
         PlotId id = new PlotId(0, 0);
-        File container = PlotSquared.get().IMP.getWorldContainer();
+        File container = PlotSquared.imp().getWorldContainer();
         for (File folder : container.listFiles()) {
             String name = folder.getName();
             if (!WorldUtil.IMP.isWorld(name) && PlotId.fromString(name) == null) {
@@ -45,7 +45,7 @@ import java.util.UUID;
                         UUID.nameUUIDFromBytes(("OfflinePlayer:" + name).getBytes(Charsets.UTF_8));
                 }
                 while (new File(container, id.toCommaSeparatedString()).exists()) {
-                    id = id.getNextId(1);
+                    id = Auto.getNextPlotId(id, 1);
                 }
                 File newDir = new File(container, id.toCommaSeparatedString());
                 if (folder.renameTo(newDir)) {

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/DebugPaste.java

@@ -19,64 +19,69 @@ import java.io.IOException;
     extends SubCommand {
 
     @Override public boolean onCommand(final PlotPlayer player, String[] args) {
-        TaskManager.runTaskAsync(() -> {
-            try {
-                String settingsYML = HastebinUtility.upload(PlotSquared.get().configFile);
-                String worldsYML = HastebinUtility.upload(PlotSquared.get().worldsFile);
-                String commandsYML = HastebinUtility.upload(PlotSquared.get().commandsFile);
-                String latestLOG;
+        TaskManager.runTaskAsync(new Runnable() {
+            @Override public void run() {
                 try {
-                    latestLOG = HastebinUtility.upload(
-                        new File(PlotSquared.get().IMP.getDirectory(), "../../logs/latest.log"));
-                } catch (IOException ignored) {
-                    MainUtil
-                        .sendMessage(player, "&clatest.log is too big to be pasted, will ignore");
-                    latestLOG = "too big :(";
-                }
-                StringBuilder b = new StringBuilder();
-                b.append(
-                    "# Welcome to this paste\n# It is meant to provide us at IntellectualSites with better information about your "
-                        + "problem\n\n# We will start with some informational files\n");
-                b.append("links.settings_yml: ").append(settingsYML).append('\n');
-                b.append("links.worlds_yml: ").append(worldsYML).append('\n');
-                b.append("links.commands_yml: ").append(commandsYML).append('\n');
-                b.append("links.latest_log: ").append(latestLOG).append('\n');
-                b.append("\n# Server Information\n");
-                int[] sVersion = PlotSquared.get().IMP.getServerVersion();
-                b.append("version.server: ").append(sVersion[0]).append('.').append(sVersion[1])
-                    .append('.').append(sVersion[2]).append('\n');
-                b.append("online_mode: ").append(UUIDHandler.getUUIDWrapper()).append(';')
-                    .append(!Settings.UUID.OFFLINE).append('\n');
-                b.append("plugins:");
-                for (String id : PlotSquared.get().IMP.getPluginIds()) {
-                    String[] split = id.split(":");
-                    String[] split2 = split[0].split(";");
-                    String enabled = split.length == 2 ? split[1] : "unknown";
-                    String name = split2[0];
-                    String version = split2.length == 2 ? split2[1] : "unknown";
-                    b.append("\n  ").append(name).append(":\n    ").append("version: '")
-                        .append(version).append('\'').append("\n    enabled: ").append(enabled);
-                }
-                b.append("\n\n# YAY! Now, let's see what we can find in your JVM\n");
-                Runtime runtime = Runtime.getRuntime();
-                b.append("memory.free: ").append(runtime.freeMemory()).append('\n');
-                b.append("memory.max: ").append(runtime.maxMemory()).append('\n');
-                b.append("java.specification.version: '")
-                    .append(System.getProperty("java.specification.version")).append("'\n");
-                b.append("java.vendor: '").append(System.getProperty("java.vendor")).append("'\n");
-                b.append("java.version: '").append(System.getProperty("java.version"))
-                    .append("'\n");
-                b.append("os.arch: '").append(System.getProperty("os.arch")).append("'\n");
-                b.append("os.name: '").append(System.getProperty("os.name")).append("'\n");
-                b.append("os.version: '").append(System.getProperty("os.version")).append("'\n\n");
-                b.append("# Okay :D Great. You are now ready to create your bug report!");
-                b.append(
-                    "\n# You can do so at https://github.com/IntellectualSites/PlotSquared/issues");
+                    String settingsYML = HastebinUtility.upload(PlotSquared.get().configFile);
+                    String worldsYML = HastebinUtility.upload(PlotSquared.get().worldsFile);
+                    String commandsYML = HastebinUtility.upload(PlotSquared.get().commandsFile);
+                    String latestLOG;
+                    try {
+                        latestLOG = HastebinUtility.upload(
+                            new File(PlotSquared.get().IMP.getDirectory(),
+                                "../../logs/latest.log"));
+                    } catch (IOException ignored) {
+                        MainUtil.sendMessage(player,
+                            "&clatest.log is too big to be pasted, will ignore");
+                        latestLOG = "too big :(";
+                    }
+                    StringBuilder b = new StringBuilder();
+                    b.append(
+                        "# Welcome to this paste\n# It is meant to provide us at IntellectualSites with better information about your "
+                            + "problem\n\n# We will start with some informational files\n");
+                    b.append("links.settings_yml: ").append(settingsYML).append('\n');
+                    b.append("links.worlds_yml: ").append(worldsYML).append('\n');
+                    b.append("links.commands_yml: ").append(commandsYML).append('\n');
+                    b.append("links.latest_log: ").append(latestLOG).append('\n');
+                    b.append("\n# Server Information\n");
+                    int[] sVersion = PlotSquared.get().IMP.getServerVersion();
+                    b.append("version.server: ").append(sVersion[0]).append('.').append(sVersion[1])
+                        .append('.').append(sVersion[2]).append('\n');
+                    b.append("online_mode: ").append(UUIDHandler.getUUIDWrapper()).append(';')
+                        .append(!Settings.UUID.OFFLINE).append('\n');
+                    b.append("plugins:");
+                    for (String id : PlotSquared.get().IMP.getPluginIds()) {
+                        String[] split = id.split(":");
+                        String[] split2 = split[0].split(";");
+                        String enabled = split.length == 2 ? split[1] : "unknown";
+                        String name = split2[0];
+                        String version = split2.length == 2 ? split2[1] : "unknown";
+                        b.append("\n  ").append(name).append(":\n    ").append("version: '")
+                            .append(version).append('\'').append("\n    enabled: ").append(enabled);
+                    }
+                    b.append("\n\n# YAY! Now, let's see what we can find in your JVM\n");
+                    Runtime runtime = Runtime.getRuntime();
+                    b.append("memory.free: ").append(runtime.freeMemory()).append('\n');
+                    b.append("memory.max: ").append(runtime.maxMemory()).append('\n');
+                    b.append("java.specification.version: '")
+                        .append(System.getProperty("java.specification.version")).append("'\n");
+                    b.append("java.vendor: '").append(System.getProperty("java.vendor"))
+                        .append("'\n");
+                    b.append("java.version: '").append(System.getProperty("java.version"))
+                        .append("'\n");
+                    b.append("os.arch: '").append(System.getProperty("os.arch")).append("'\n");
+                    b.append("os.name: '").append(System.getProperty("os.name")).append("'\n");
+                    b.append("os.version: '").append(System.getProperty("os.version"))
+                        .append("'\n\n");
+                    b.append("# Okay :D Great. You are now ready to create your bug report!");
+                    b.append(
+                        "\n# You can do so at https://github.com/IntellectualSites/PlotSquared/issues");
 
-                String link = HastebinUtility.upload(b.toString());
-                player.sendMessage(C.DEBUG_REPORT_CREATED.s().replace("%url%", link));
-            } catch (IOException e) {
-                e.printStackTrace();
+                    String link = HastebinUtility.upload(b.toString());
+                    player.sendMessage(C.DEBUG_REPORT_CREATED.s().replace("%url%", link));
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
             }
         });
         return true;

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/DebugSaveTest.java

@@ -16,10 +16,14 @@ import java.util.ArrayList;
 public class DebugSaveTest extends SubCommand {
 
     @Override public boolean onCommand(final PlotPlayer player, String[] args) {
-        ArrayList<Plot> plots = new ArrayList<>(PlotSquared.get().getPlots());
+        ArrayList<Plot> plots = new ArrayList<Plot>();
+        plots.addAll(PlotSquared.get().getPlots());
         MainUtil.sendMessage(player, "&6Starting `DEBUGSAVETEST`");
-        DBFunc.createPlotsAndData(plots,
-            () -> MainUtil.sendMessage(player, "&6Database sync finished!"));
+        DBFunc.createPlotsAndData(plots, new Runnable() {
+            @Override public void run() {
+                MainUtil.sendMessage(player, "&6Database sync finished!");
+            }
+        });
         return true;
     }
 }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Delete.java

@@ -33,28 +33,33 @@ import com.github.intellectualsites.plotsquared.plot.util.*;
         final java.util.Set<Plot> plots = plot.getConnectedPlots();
         final int currentPlots =
             Settings.Limit.GLOBAL ? player.getPlotCount() : player.getPlotCount(loc.getWorld());
-        Runnable run = () -> {
-            if (plot.getRunning() > 0) {
-                MainUtil.sendMessage(player, C.WAIT_FOR_TIMER);
-                return;
-            }
-            final long start = System.currentTimeMillis();
-            boolean result = plot.deletePlot(() -> {
-                plot.removeRunning();
-                if ((EconHandler.manager != null) && plotArea.USE_ECONOMY) {
-                    Expression<Double> valueExr = plotArea.PRICES.get("sell");
-                    double value = plots.size() * valueExr.evaluate((double) currentPlots);
-                    if (value > 0d) {
-                        EconHandler.manager.depositMoney(player, value);
-                        sendMessage(player, C.ADDED_BALANCE, String.valueOf(value));
-                    }
+        Runnable run = new Runnable() {
+            @Override public void run() {
+                if (plot.getRunning() > 0) {
+                    MainUtil.sendMessage(player, C.WAIT_FOR_TIMER);
+                    return;
+                }
+                final long start = System.currentTimeMillis();
+                boolean result = plot.deletePlot(new Runnable() {
+                    @Override public void run() {
+                        plot.removeRunning();
+                        if ((EconHandler.manager != null) && plotArea.USE_ECONOMY) {
+                            Expression<Double> valueExr = plotArea.PRICES.get("sell");
+                            double value = plots.size() * valueExr.evaluate((double) currentPlots);
+                            if (value > 0d) {
+                                EconHandler.manager.depositMoney(player, value);
+                                sendMessage(player, C.ADDED_BALANCE, String.valueOf(value));
+                            }
+                        }
+                        MainUtil.sendMessage(player, C.DELETING_DONE,
+                            System.currentTimeMillis() - start);
+                    }
+                });
+                if (result) {
+                    plot.addRunning();
+                } else {
+                    MainUtil.sendMessage(player, C.WAIT_FOR_TIMER);
                 }
-                MainUtil.sendMessage(player, C.DELETING_DONE, System.currentTimeMillis() - start);
-            });
-            if (result) {
-                plot.addRunning();
-            } else {
-                MainUtil.sendMessage(player, C.WAIT_FOR_TIMER);
             }
         };
         if (hasConfirmation(player)) {

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Deny.java

@@ -10,6 +10,7 @@ import com.github.intellectualsites.plotsquared.plot.object.Plot;
 import com.github.intellectualsites.plotsquared.plot.object.PlotPlayer;
 import com.github.intellectualsites.plotsquared.plot.util.*;
 
+import java.util.Iterator;
 import java.util.Set;
 import java.util.UUID;
 
@@ -43,7 +44,9 @@ import java.util.UUID;
             MainUtil.sendMessage(player, C.INVALID_PLAYER, args[0]);
             return false;
         }
-        for (UUID uuid : uuids) {
+        Iterator<UUID> iter = uuids.iterator();
+        while (iter.hasNext()) {
+            UUID uuid = iter.next();
             if (uuid == DBFunc.EVERYONE && !(
                 Permissions.hasPermission(player, C.PERMISSION_DENY_EVERYONE) || Permissions
                     .hasPermission(player, C.PERMISSION_ADMIN_COMMAND_DENY))) {

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/FlagCmd.java

@@ -247,21 +247,20 @@ import java.util.*;
                 for (Flag<?> flag1 : Flags.getFlags()) {
                     String type = flag1.getClass().getSimpleName();
                     if (!flags.containsKey(type)) {
-                        flags.put(type, new ArrayList<>());
+                        flags.put(type, new ArrayList<String>());
                     }
                     flags.get(type).add(flag1.getName());
                 }
-                StringBuilder message = new StringBuilder();
+                String message = "";
                 String prefix = "";
                 for (Map.Entry<String, ArrayList<String>> entry : flags.entrySet()) {
                     String category = entry.getKey();
                     List<String> flagNames = entry.getValue();
                     Collections.sort(flagNames);
-                    message.append(prefix).append("&6").append(category).append(": &7")
-                        .append(StringMan.join(flagNames, ", "));
+                    message += prefix + "&6" + category + ": &7" + StringMan.join(flagNames, ", ");
                     prefix = "\n";
                 }
-                MainUtil.sendMessage(player, message.toString());
+                MainUtil.sendMessage(player, message);
                 return true;
         }
         MainUtil.sendMessage(player, C.COMMAND_SYNTAX, "/plot flag <set|remove|add|list|info>");

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/GenerateDocs.java

@@ -209,7 +209,7 @@ public class GenerateDocs {
                 line =
                     line.replaceAll("/[*][*] ", "").replaceAll("[*]/ ", "").replaceAll("[*] ", "")
                         .trim();
-                result.append(line).append('\n');
+                result.append(line + '\n');
             }
         }
         return result.toString().trim();

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Help.java

@@ -57,7 +57,9 @@ public class Help extends Command {
     public void displayHelp(PlotPlayer player, String cat, int page) {
         CommandCategory catEnum = null;
         if (cat != null) {
-            if (!StringMan.isEqualIgnoreCase(cat, "all")) {
+            if (StringMan.isEqualIgnoreCase(cat, "all")) {
+                catEnum = null;
+            } else {
                 for (CommandCategory c : CommandCategory.values()) {
                     if (StringMan.isEqualIgnoreCaseToAny(cat, c.name(), c.toString())) {
                         catEnum = c;
@@ -74,13 +76,13 @@ public class Help extends Command {
             StringBuilder builder = new StringBuilder();
             builder.append(C.HELP_HEADER.s());
             for (CommandCategory c : CommandCategory.values()) {
-                builder.append("\n").append(StringMan
+                builder.append("\n" + StringMan
                     .replaceAll(C.HELP_INFO_ITEM.s(), "%category%", c.toString().toLowerCase(),
                         "%category_desc%", c.toString()));
             }
             builder.append("\n").append(C.HELP_INFO_ITEM.s().replaceAll("%category%", "all")
                 .replaceAll("%category_desc%", "Display all commands"));
-            builder.append("\n").append(C.HELP_FOOTER.s());
+            builder.append("\n" + C.HELP_FOOTER.s());
             MainUtil.sendMessage(player, builder.toString(), false);
             return;
         }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Inbox.java

@@ -43,7 +43,7 @@ import java.util.List;
         StringBuilder string = new StringBuilder();
         string.append(StringMan
             .replaceAll(C.COMMENT_LIST_HEADER_PAGED.s(), "%amount%", comments.length, "%cur",
-                page + 1, "%max", totalPages + 1, "%word", "all")).append('\n');
+                page + 1, "%max", totalPages + 1, "%word", "all") + '\n');
 
         // This might work xD
         for (int x = page * 12; x < max; x++) {

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Info.java

@@ -69,24 +69,24 @@ import java.util.UUID;
                 }
             };
             UUID uuid = player.getUUID();
-            String name = MainUtil.getName(plot.guessOwner());
-            inv.setItem(1,
-                new PlotItemStack("emerald", 1, "&cPlot Info", "&cID: &6" + plot.getId().toString(),
-                    "&cOwner: &6" + name, "&cAlias: &6" + plot.getAlias(),
-                    "&cBiome: &6" + plot.getBiome().replaceAll("_", "").toLowerCase(),
-                    "&cCan Build: &6" + plot.isAdded(uuid), "&cSeen: &6" + MainUtil
-                    .secToTime((int) (ExpireManager.IMP.getAge(plot) / 1000)),
-                    "&cIs Denied: &6" + plot.isDenied(uuid)));
-            inv.setItem(1, new PlotItemStack("emerald", 1, "&cTrusted",
+            String name = MainUtil.getName(plot.owner);
+            inv.setItem(1, new PlotItemStack(388, (short) 0, 1, "&cPlot Info",
+                "&cID: &6" + plot.getId().toString(), "&cOwner: &6" + name,
+                "&cAlias: &6" + plot.getAlias(),
+                "&cBiome: &6" + plot.getBiome().replaceAll("_", "").toLowerCase(),
+                "&cCan Build: &6" + plot.isAdded(uuid),
+                "&cSeen: &6" + MainUtil.secToTime((int) (ExpireManager.IMP.getAge(plot) / 1000)),
+                "&cIs Denied: &6" + plot.isDenied(uuid)));
+            inv.setItem(1, new PlotItemStack(388, (short) 0, 1, "&cTrusted",
                 "&cAmount: &6" + plot.getTrusted().size(),
                 "&8Click to view a list of the trusted users"));
-            inv.setItem(1, new PlotItemStack("emerald", 1, "&cMembers",
+            inv.setItem(1, new PlotItemStack(388, (short) 0, 1, "&cMembers",
                 "&cAmount: &6" + plot.getMembers().size(),
                 "&8Click to view a list of plot members"));
-            inv.setItem(1, new PlotItemStack("emerald", 1, "&cDenied", "&cDenied",
+            inv.setItem(1, new PlotItemStack(388, (short) 0, 1, "&cDenied", "&cDenied",
                 "&cAmount: &6" + plot.getDenied().size(),
                 "&8Click to view a list of denied players"));
-            inv.setItem(1, new PlotItemStack("emerald", 1, "&cFlags", "&cFlags",
+            inv.setItem(1, new PlotItemStack(388, (short) 0, 1, "&cFlags", "&cFlags",
                 "&cAmount: &6" + plot.getFlags().size(), "&8Click to view a list of plot flags"));
             inv.openInventory();
             return true;

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/ListCmd.java

@@ -10,11 +10,8 @@ import com.github.intellectualsites.plotsquared.plot.util.*;
 import com.github.intellectualsites.plotsquared.plot.util.expiry.ExpireManager;
 import com.google.common.base.Optional;
 
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
+import java.util.*;
 import java.util.Map.Entry;
-import java.util.UUID;
 
 @CommandDeclaration(command = "list", aliases = {"l", "find", "search"}, description = "List plots",
     permission = "plots.list", category = CommandCategory.INFO,
@@ -135,7 +132,7 @@ public class ListCmd extends SubCommand {
                     return false;
                 }
                 plots = ExpireManager.IMP == null ?
-                    new ArrayList<>() :
+                    new ArrayList<Plot>() :
                     new ArrayList<>(ExpireManager.IMP.getPendingExpired());
                 break;
             case "area":
@@ -148,7 +145,7 @@ public class ListCmd extends SubCommand {
                         C.PERMISSION_LIST_WORLD_NAME.f(world));
                     return false;
                 }
-                plots = area == null ? new ArrayList<>() : new ArrayList<>(area.getPlots());
+                plots = area == null ? new ArrayList<Plot>() : new ArrayList<>(area.getPlots());
                 break;
             case "all":
                 if (!Permissions.hasPermission(player, C.PERMISSION_LIST_ALL)) {
@@ -170,16 +167,18 @@ public class ListCmd extends SubCommand {
                     }
                     plots.add(plot);
                 }
-                plots.sort((a, b) -> {
-                    String va = "" + a.getFlags().get(Flags.DONE);
-                    String vb = "" + b.getFlags().get(Flags.DONE);
-                    if (MathMan.isInteger(va)) {
-                        if (MathMan.isInteger(vb)) {
-                            return Integer.parseInt(vb) - Integer.parseInt(va);
+                Collections.sort(plots, new Comparator<Plot>() {
+                    @Override public int compare(Plot a, Plot b) {
+                        String va = "" + a.getFlags().get(Flags.DONE);
+                        String vb = "" + b.getFlags().get(Flags.DONE);
+                        if (MathMan.isInteger(va)) {
+                            if (MathMan.isInteger(vb)) {
+                                return Integer.parseInt(vb) - Integer.parseInt(va);
+                            }
+                            return -1;
                         }
-                        return -1;
+                        return 1;
                     }
-                    return 1;
                 });
                 sort = false;
                 break;
@@ -189,31 +188,33 @@ public class ListCmd extends SubCommand {
                     return false;
                 }
                 plots = new ArrayList<>(PlotSquared.get().getPlots());
-                plots.sort((p1, p2) -> {
-                    double v1 = 0;
-                    int p1s = p1.getSettings().getRatings().size();
-                    int p2s = p2.getRatings().size();
-                    if (!p1.getSettings().getRatings().isEmpty()) {
-                        for (Entry<UUID, Rating> entry : p1.getRatings().entrySet()) {
-                            double av = entry.getValue().getAverageRating();
-                            v1 += av * av;
+                Collections.sort(plots, new Comparator<Plot>() {
+                    @Override public int compare(Plot p1, Plot p2) {
+                        double v1 = 0;
+                        int p1s = p1.getSettings().getRatings().size();
+                        int p2s = p2.getRatings().size();
+                        if (!p1.getSettings().getRatings().isEmpty()) {
+                            for (Entry<UUID, Rating> entry : p1.getRatings().entrySet()) {
+                                double av = entry.getValue().getAverageRating();
+                                v1 += av * av;
+                            }
+                            v1 /= p1s;
+                            v1 += p1s;
                         }
-                        v1 /= p1s;
-                        v1 += p1s;
-                    }
-                    double v2 = 0;
-                    if (!p2.getSettings().getRatings().isEmpty()) {
-                        for (Entry<UUID, Rating> entry : p2.getRatings().entrySet()) {
-                            double av = entry.getValue().getAverageRating();
-                            v2 += av * av;
+                        double v2 = 0;
+                        if (!p2.getSettings().getRatings().isEmpty()) {
+                            for (Entry<UUID, Rating> entry : p2.getRatings().entrySet()) {
+                                double av = entry.getValue().getAverageRating();
+                                v2 += av * av;
+                            }
+                            v2 /= p2s;
+                            v2 += p2s;
                         }
-                        v2 /= p2s;
-                        v2 += p2s;
+                        if (v2 == v1 && v2 != 0) {
+                            return p2s - p1s;
+                        }
+                        return (int) Math.signum(v2 - v1);
                     }
-                    if (v2 == v1 && v2 != 0) {
-                        return p2s - p1s;
-                    }
-                    return (int) Math.signum(v2 - v1);
                 });
                 sort = false;
                 break;
@@ -240,7 +241,7 @@ public class ListCmd extends SubCommand {
                 }
                 plots = new ArrayList<>();
                 for (Plot plot : PlotSquared.get().getPlots()) {
-                    if (plot.guessOwner() == null) {
+                    if (plot.owner == null) {
                         plots.add(plot);
                     }
                 }
@@ -252,10 +253,10 @@ public class ListCmd extends SubCommand {
                 }
                 plots = new ArrayList<>();
                 for (Plot plot : PlotSquared.get().getPlots()) {
-                    if (plot.guessOwner() == null) {
+                    if (plot.owner == null) {
                         continue;
                     }
-                    if (UUIDHandler.getName(plot.guessOwner()) == null) {
+                    if (UUIDHandler.getName(plot.owner) == null) {
                         plots.add(plot);
                     }
                 }
@@ -329,7 +330,12 @@ public class ListCmd extends SubCommand {
     public void displayPlots(final PlotPlayer player, List<Plot> plots, int pageSize, int page,
         PlotArea area, String[] args, boolean sort) {
         // Header
-        plots.removeIf(plot -> !plot.isBasePlot());
+        Iterator<Plot> iterator = plots.iterator();
+        while (iterator.hasNext()) {
+            if (!iterator.next().isBasePlot()) {
+                iterator.remove();
+            }
+        }
         if (sort) {
             plots = PlotSquared.get().sortPlots(plots, SortType.CREATION_DATE, area);
         }
@@ -337,7 +343,7 @@ public class ListCmd extends SubCommand {
             new RunnableVal3<Integer, Plot, PlotMessage>() {
                 @Override public void run(Integer i, Plot plot, PlotMessage message) {
                     String color;
-                    if (plot.guessOwner() == null) {
+                    if (plot.owner == null) {
                         color = "$3";
                     } else if (plot.isOwner(player.getUUID())) {
                         color = "$1";

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Load.java

@@ -103,15 +103,17 @@ import java.util.List;
         List<String> schematics = player.getMeta("plot_schematics");
         if (schematics == null) {
             plot.addRunning();
-            TaskManager.runTaskAsync(() -> {
-                List<String> schematics1 = SchematicHandler.manager.getSaves(player.getUUID());
-                plot.removeRunning();
-                if ((schematics1 == null) || schematics1.isEmpty()) {
-                    MainUtil.sendMessage(player, C.LOAD_FAILED);
-                    return;
+            TaskManager.runTaskAsync(new Runnable() {
+                @Override public void run() {
+                    List<String> schematics = SchematicHandler.manager.getSaves(player.getUUID());
+                    plot.removeRunning();
+                    if ((schematics == null) || schematics.isEmpty()) {
+                        MainUtil.sendMessage(player, C.LOAD_FAILED);
+                        return;
+                    }
+                    player.setMeta("plot_schematics", schematics);
+                    displaySaves(player);
                 }
-                player.setMeta("plot_schematics", schematics1);
-                displaySaves(player);
             });
         } else {
             displaySaves(player);
@@ -149,30 +151,30 @@ import java.util.List;
         if (time >= 33868800) {
             int years = (int) (time / 33868800);
             time -= years * 33868800;
-            toreturn.append(years).append("y ");
+            toreturn.append(years + "y ");
         }
         if (time >= 604800) {
             int weeks = (int) (time / 604800);
             time -= weeks * 604800;
-            toreturn.append(weeks).append("w ");
+            toreturn.append(weeks + "w ");
         }
         if (time >= 86400) {
             int days = (int) (time / 86400);
             time -= days * 86400;
-            toreturn.append(days).append("d ");
+            toreturn.append(days + "d ");
         }
         if (time >= 3600) {
             int hours = (int) (time / 3600);
             time -= hours * 3600;
-            toreturn.append(hours).append("h ");
+            toreturn.append(hours + "h ");
         }
         if (time >= 60) {
             int minutes = (int) (time / 60);
             time -= minutes * 60;
-            toreturn.append(minutes).append("m ");
+            toreturn.append(minutes + "m ");
         }
         if (toreturn.length() == 0 || (time > 0)) {
-            toreturn.append(time).append("s ");
+            toreturn.append(time + "s ");
         }
         return toreturn.toString().trim();
     }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/MainCommand.java

@@ -127,23 +127,27 @@ public class MainCommand extends Command {
                 @Override
                 public void run(final Command cmd, final Runnable success, final Runnable failure) {
                     if (cmd.hasConfirmation(player)) {
-                        CmdConfirm.addPending(player, cmd.getUsage(), () -> {
-                            if (EconHandler.manager != null) {
-                                PlotArea area = player.getApplicablePlotArea();
-                                if (area != null) {
-                                    Expression<Double> priceEval = area.PRICES.get(cmd.getFullId());
-                                    Double price = priceEval != null ? priceEval.evaluate(0d) : 0d;
-                                    if (price != null
-                                        && EconHandler.manager.getMoney(player) < price) {
-                                        if (failure != null) {
-                                            failure.run();
+                        CmdConfirm.addPending(player, cmd.getUsage(), new Runnable() {
+                            @Override public void run() {
+                                if (EconHandler.manager != null) {
+                                    PlotArea area = player.getApplicablePlotArea();
+                                    if (area != null) {
+                                        Expression<Double> priceEval =
+                                            area.PRICES.get(cmd.getFullId());
+                                        Double price =
+                                            priceEval != null ? priceEval.evaluate(0d) : 0d;
+                                        if (price != null
+                                            && EconHandler.manager.getMoney(player) < price) {
+                                            if (failure != null) {
+                                                failure.run();
+                                            }
+                                            return;
                                         }
-                                        return;
                                     }
                                 }
-                            }
-                            if (success != null) {
-                                success.run();
+                                if (success != null) {
+                                    success.run();
+                                }
                             }
                         });
                         return;

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Merge.java

@@ -55,11 +55,12 @@ public class Merge extends SubCommand {
                 MainUtil.sendMessage(player, C.NO_PLOT_PERMS);
                 return false;
             } else {
-                uuid = plot.guessOwner();
+                uuid = plot.owner;
             }
         }
         final PlotArea plotArea = plot.getArea();
-        Expression<Double> priceExr = plotArea.PRICES.getOrDefault("merge", null);
+        Expression<Double> priceExr =
+            plotArea.PRICES.containsKey("merge") ? plotArea.PRICES.get("merge") : null;
         final int size = plot.getConnectedPlots().size();
         final double price = priceExr == null ? 0d : priceExr.evaluate((double) size);
         if (EconHandler.manager != null && plotArea.USE_ECONOMY && price > 0d
@@ -154,23 +155,25 @@ public class Merge extends SubCommand {
             }
             isOnline = true;
             final int dir = direction;
-            Runnable run = () -> {
-                MainUtil.sendMessage(accepter, C.MERGE_ACCEPTED);
-                plot.autoMerge(dir, maxSize - size, owner, terrain);
-                PlotPlayer plotPlayer = UUIDHandler.getPlayer(player.getUUID());
-                if (plotPlayer == null) {
-                    sendMessage(accepter, C.MERGE_NOT_VALID);
-                    return;
-                }
-                if (EconHandler.manager != null && plotArea.USE_ECONOMY && price > 0d) {
-                    if (EconHandler.manager.getMoney(player) < price) {
-                        sendMessage(player, C.CANNOT_AFFORD_MERGE, String.valueOf(price));
+            Runnable run = new Runnable() {
+                @Override public void run() {
+                    MainUtil.sendMessage(accepter, C.MERGE_ACCEPTED);
+                    plot.autoMerge(dir, maxSize - size, owner, terrain);
+                    PlotPlayer plotPlayer = UUIDHandler.getPlayer(player.getUUID());
+                    if (plotPlayer == null) {
+                        sendMessage(accepter, C.MERGE_NOT_VALID);
                         return;
                     }
-                    EconHandler.manager.withdrawMoney(player, price);
-                    sendMessage(player, C.REMOVED_BALANCE, String.valueOf(price));
+                    if (EconHandler.manager != null && plotArea.USE_ECONOMY && price > 0d) {
+                        if (EconHandler.manager.getMoney(player) < price) {
+                            sendMessage(player, C.CANNOT_AFFORD_MERGE, String.valueOf(price));
+                            return;
+                        }
+                        EconHandler.manager.withdrawMoney(player, price);
+                        sendMessage(player, C.REMOVED_BALANCE, String.valueOf(price));
+                    }
+                    MainUtil.sendMessage(player, C.SUCCESS_MERGE);
                 }
-                MainUtil.sendMessage(player, C.SUCCESS_MERGE);
             };
             if (hasConfirmation(player)) {
                 CmdConfirm.addPending(accepter,

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Move.java

@@ -54,7 +54,11 @@ import com.github.intellectualsites.plotsquared.plot.util.Permissions;
             C.PLOTWORLD_INCOMPATIBLE.send(player);
             return false;
         }
-        if (plot1.move(plot2, () -> MainUtil.sendMessage(player, C.MOVE_SUCCESS), false)) {
+        if (plot1.move(plot2, new Runnable() {
+            @Override public void run() {
+                MainUtil.sendMessage(player, C.MOVE_SUCCESS);
+            }
+        }, false)) {
             return true;
         } else {
             MainUtil.sendMessage(player, C.REQUIRES_UNOWNED);

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Owner.java

@@ -71,17 +71,20 @@ import java.util.UUID;
         final String finalName = name;
         final UUID finalUUID = uuid;
         final boolean removeDenied = plot.isDenied(finalUUID);
-        Runnable run = () -> {
-            if (plot.setOwner(finalUUID, player)) {
-                if (removeDenied)
-                    plot.removeDenied(finalUUID);
-                plot.setSign(finalName);
-                MainUtil.sendMessage(player, C.SET_OWNER);
-                if (other != null) {
-                    MainUtil.sendMessage(other, C.NOW_OWNER, plot.getArea() + ";" + plot.getId());
-                }
-            } else
-                MainUtil.sendMessage(player, C.SET_OWNER_CANCELLED);
+        Runnable run = new Runnable() {
+            @Override public void run() {
+                if (plot.setOwner(finalUUID, player)) {
+                    if (removeDenied)
+                        plot.removeDenied(finalUUID);
+                    plot.setSign(finalName);
+                    MainUtil.sendMessage(player, C.SET_OWNER);
+                    if (other != null) {
+                        MainUtil
+                            .sendMessage(other, C.NOW_OWNER, plot.getArea() + ";" + plot.getId());
+                    }
+                } else
+                    MainUtil.sendMessage(player, C.SET_OWNER_CANCELLED);
+            }
         };
         if (hasConfirmation(player)) {
             CmdConfirm.addPending(player, "/plot set owner " + value, run);

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/PluginCmd.java

@@ -13,16 +13,18 @@ import com.github.intellectualsites.plotsquared.plot.util.TaskManager;
     category = CommandCategory.INFO) public class PluginCmd extends SubCommand {
 
     @Override public boolean onCommand(final PlotPlayer player, String[] args) {
-        TaskManager.IMP.taskAsync(() -> {
-            MainUtil.sendMessage(player, String.format(
-                "$2>> $1&l" + PlotSquared.get().IMP.getPluginName() + " $2($1Version$2: $1%s$2)",
-                PlotSquared.get().getVersion()));
-            MainUtil.sendMessage(player,
-                "$2>> $1&lAuthors$2: $1Citymonstret $2& $1Empire92 $2& $1MattBDev $2& $1dordsor21");
-            MainUtil.sendMessage(player,
-                "$2>> $1&lWiki$2: $1https://github.com/IntellectualCrafters/PlotSquared/wiki");
-            MainUtil
-                .sendMessage(player, "$2>> $1&lNewest Version$2: $1" + getNewestVersionString());
+        TaskManager.IMP.taskAsync(new Runnable() {
+            @Override public void run() {
+                MainUtil.sendMessage(player, String.format(
+                    "$2>> $1&l" + PlotSquared.imp().getPluginName() + " $2($1Version$2: $1%s$2)",
+                    PlotSquared.get().getVersion()));
+                MainUtil.sendMessage(player,
+                    "$2>> $1&lAuthors$2: $1Citymonstret $2& $1Empire92 $2& $1MattBDev $2& $1dordsor21");
+                MainUtil.sendMessage(player,
+                    "$2>> $1&lWiki$2: $1https://github.com/IntellectualCrafters/PlotSquared/wiki");
+                MainUtil.sendMessage(player,
+                    "$2>> $1&lNewest Version$2: $1" + getNewestVersionString());
+            }
         });
         return true;
     }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Purge.java

@@ -105,10 +105,12 @@ import java.util.UUID;
             if (added != null && !plot.isAdded(added)) {
                 continue;
             }
-            if (unknown && UUIDHandler.getName(plot.guessOwner()) != null) {
+            if (unknown && UUIDHandler.getName(plot.owner) != null) {
                 continue;
             }
-            toDelete.addAll(plot.getConnectedPlots());
+            for (Plot current : plot.getConnectedPlots()) {
+                toDelete.add(current);
+            }
         }
         if (PlotSquared.get().plots_tmp != null) {
             for (Entry<String, HashMap<PlotId, Plot>> entry : PlotSquared.get().plots_tmp
@@ -128,7 +130,7 @@ import java.util.UUID;
                     if (added != null && !plot.isAdded(added)) {
                         continue;
                     }
-                    if (unknown && UUIDHandler.getName(plot.guessOwner()) != null) {
+                    if (unknown && UUIDHandler.getName(plot.owner) != null) {
                         continue;
                     }
                     toDelete.add(plot);
@@ -141,21 +143,23 @@ import java.util.UUID;
         }
         String cmd =
             "/plot purge " + StringMan.join(args, " ") + " (" + toDelete.size() + " plots)";
-        Runnable run = () -> {
-            PlotSquared.debug("Calculating plots to purge, please wait...");
-            HashSet<Integer> ids = new HashSet<>();
-            for (Plot plot : toDelete) {
-                if (plot.temp != Integer.MAX_VALUE) {
-                    ids.add(plot.temp);
-                    plot.getArea().removePlot(plot.getId());
-                    for (PlotPlayer pp : plot.getPlayersInPlot()) {
-                        PlotListener.plotEntry(pp, plot);
+        Runnable run = new Runnable() {
+            @Override public void run() {
+                PlotSquared.debug("Calculating plots to purge, please wait...");
+                HashSet<Integer> ids = new HashSet<>();
+                for (Plot plot : toDelete) {
+                    if (plot.temp != Integer.MAX_VALUE) {
+                        ids.add(plot.temp);
+                        plot.getArea().removePlot(plot.getId());
+                        for (PlotPlayer pp : plot.getPlayersInPlot()) {
+                            PlotListener.plotEntry(pp, plot);
+                        }
+                        plot.removeSign();
                     }
-                    plot.removeSign();
                 }
+                DBFunc.purgeIds(ids);
+                C.PURGE_SUCCESS.send(player, ids.size() + "/" + toDelete.size());
             }
-            DBFunc.purgeIds(ids);
-            C.PURGE_SUCCESS.send(player, ids.size() + "/" + toDelete.size());
         };
         if (hasConfirmation(player)) {
             CmdConfirm.addPending(player, cmd, run);

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Rate.java

@@ -10,11 +10,8 @@ import com.github.intellectualsites.plotsquared.plot.flag.Flags;
 import com.github.intellectualsites.plotsquared.plot.object.*;
 import com.github.intellectualsites.plotsquared.plot.util.*;
 
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.HashMap;
+import java.util.*;
 import java.util.Map.Entry;
-import java.util.UUID;
 
 @CommandDeclaration(command = "rate", permission = "plots.rate", description = "Rate the plot",
     usage = "/plot rate [#|next|purge]", aliases = "rt", category = CommandCategory.INFO,
@@ -25,23 +22,25 @@ import java.util.UUID;
             switch (args[0].toLowerCase()) {
                 case "next": {
                     ArrayList<Plot> plots = new ArrayList<>(PlotSquared.get().getBasePlots());
-                    Collections.sort(plots, (p1, p2) -> {
-                        double v1 = 0;
-                        if (!p1.getRatings().isEmpty()) {
-                            for (Entry<UUID, Rating> entry : p1.getRatings().entrySet()) {
-                                v1 -= 11 - entry.getValue().getAverageRating();
+                    Collections.sort(plots, new Comparator<Plot>() {
+                        @Override public int compare(Plot p1, Plot p2) {
+                            double v1 = 0;
+                            if (!p1.getRatings().isEmpty()) {
+                                for (Entry<UUID, Rating> entry : p1.getRatings().entrySet()) {
+                                    v1 -= 11 - entry.getValue().getAverageRating();
+                                }
                             }
-                        }
-                        double v2 = 0;
-                        if (!p2.getRatings().isEmpty()) {
-                            for (Entry<UUID, Rating> entry : p2.getRatings().entrySet()) {
-                                v2 -= 11 - entry.getValue().getAverageRating();
+                            double v2 = 0;
+                            if (!p2.getRatings().isEmpty()) {
+                                for (Entry<UUID, Rating> entry : p2.getRatings().entrySet()) {
+                                    v2 -= 11 - entry.getValue().getAverageRating();
+                                }
                             }
+                            if (v1 == v2) {
+                                return -0;
+                            }
+                            return v2 > v1 ? 1 : -1;
                         }
-                        if (v1 == v2) {
-                            return -0;
-                        }
-                        return v2 > v1 ? 1 : -1;
                     });
                     UUID uuid = player.getUUID();
                     for (Plot p : plots) {
@@ -124,23 +123,25 @@ import java.util.UUID;
                             return true;
                         }
                     };
-                    inventory.setItem(0, new PlotItemStack("brown_wool", 0, "0/8"));
-                    inventory.setItem(1, new PlotItemStack("red_wool", 1, "1/8"));
-                    inventory.setItem(2, new PlotItemStack("orange_wool", 2, "2/8"));
-                    inventory.setItem(3, new PlotItemStack("yellow_wool", 3, "3/8"));
-                    inventory.setItem(4, new PlotItemStack("lime_wool", 4, "4/8"));
-                    inventory.setItem(5, new PlotItemStack("cyan_wool", 5, "5/8"));
-                    inventory.setItem(6, new PlotItemStack("blue_wool", 6, "6/8"));
-                    inventory.setItem(7, new PlotItemStack("purple_wool", 7, "7/8"));
-                    inventory.setItem(8, new PlotItemStack("magenta_wool", 8, "8/8"));
+                    inventory.setItem(0, new PlotItemStack(35, (short) 12, 0, "0/8"));
+                    inventory.setItem(1, new PlotItemStack(35, (short) 14, 1, "1/8"));
+                    inventory.setItem(2, new PlotItemStack(35, (short) 1, 2, "2/8"));
+                    inventory.setItem(3, new PlotItemStack(35, (short) 4, 3, "3/8"));
+                    inventory.setItem(4, new PlotItemStack(35, (short) 5, 4, "4/8"));
+                    inventory.setItem(5, new PlotItemStack(35, (short) 9, 5, "5/8"));
+                    inventory.setItem(6, new PlotItemStack(35, (short) 11, 6, "6/8"));
+                    inventory.setItem(7, new PlotItemStack(35, (short) 10, 7, "7/8"));
+                    inventory.setItem(8, new PlotItemStack(35, (short) 2, 8, "8/8"));
                     inventory.openInventory();
                 }
             };
             if (plot.getSettings().ratings == null) {
                 if (!Settings.Enabled_Components.RATING_CACHE) {
-                    TaskManager.runTaskAsync(() -> {
-                        plot.getSettings().ratings = DBFunc.getRatings(plot);
-                        run.run();
+                    TaskManager.runTaskAsync(new Runnable() {
+                        @Override public void run() {
+                            plot.getSettings().ratings = DBFunc.getRatings(plot);
+                            run.run();
+                        }
                     });
                     return true;
                 }
@@ -166,22 +167,26 @@ import java.util.UUID;
             return false;
         }
         final UUID uuid = player.getUUID();
-        final Runnable run = () -> {
-            if (plot.getRatings().containsKey(uuid)) {
-                sendMessage(player, C.RATING_ALREADY_EXISTS, plot.getId().toString());
-                return;
-            }
-            Rating result = EventUtil.manager.callRating(player, plot, new Rating(rating));
-            if (result != null) {
-                plot.addRating(uuid, result);
-                sendMessage(player, C.RATING_APPLIED, plot.getId().toString());
+        final Runnable run = new Runnable() {
+            @Override public void run() {
+                if (plot.getRatings().containsKey(uuid)) {
+                    sendMessage(player, C.RATING_ALREADY_EXISTS, plot.getId().toString());
+                    return;
+                }
+                Rating result = EventUtil.manager.callRating(player, plot, new Rating(rating));
+                if (result != null) {
+                    plot.addRating(uuid, result);
+                    sendMessage(player, C.RATING_APPLIED, plot.getId().toString());
+                }
             }
         };
         if (plot.getSettings().ratings == null) {
             if (!Settings.Enabled_Components.RATING_CACHE) {
-                TaskManager.runTaskAsync(() -> {
-                    plot.getSettings().ratings = DBFunc.getRatings(plot);
-                    run.run();
+                TaskManager.runTaskAsync(new Runnable() {
+                    @Override public void run() {
+                        plot.getSettings().ratings = DBFunc.getRatings(plot);
+                        run.run();
+                    }
                 });
                 return true;
             }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Relight.java

@@ -7,6 +7,8 @@ import com.github.intellectualsites.plotsquared.plot.object.*;
 import com.github.intellectualsites.plotsquared.plot.util.ChunkManager;
 import com.github.intellectualsites.plotsquared.plot.util.block.LocalBlockQueue;
 
+import java.util.HashSet;
+
 @CommandDeclaration(command = "relight", description = "Relight your plot", usage = "/plot relight",
     category = CommandCategory.DEBUG) public class Relight extends Command {
     public Relight() {
@@ -21,14 +23,17 @@ import com.github.intellectualsites.plotsquared.plot.util.block.LocalBlockQueue;
             C.NOT_IN_PLOT.send(player);
             return;
         }
+        HashSet<RegionWrapper> regions = plot.getRegions();
         final LocalBlockQueue queue = plot.getArea().getQueue(false);
         ChunkManager.chunkTask(plot, new RunnableVal<int[]>() {
             @Override public void run(int[] value) {
                 queue.fixChunkLighting(value[0], value[1]);
             }
-        }, () -> {
-            plot.refreshChunks();
-            C.SET_BLOCK_ACTION_FINISHED.send(player);
+        }, new Runnable() {
+            @Override public void run() {
+                plot.refreshChunks();
+                C.SET_BLOCK_ACTION_FINISHED.send(player);
+            }
         }, 5);
     }
 }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/SchematicCmd.java

@@ -189,6 +189,7 @@ public class SchematicCmd extends SubCommand {
                     MainUtil.sendMessage(player, C.NO_PLOT_PERMS);
                     return false;
                 }
+                location.getWorld();
                 Collection<Plot> plots = new ArrayList<>();
                 plots.add(plot);
                 boolean result = SchematicHandler.manager.exportAll(plots, null, null, () -> {

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Set.java

@@ -58,6 +58,8 @@ import java.util.HashSet;
                                 MainUtil.sendMessage(player, C.NEED_BLOCK);
                                 return true;
                             }
+                            String[] split = material.split(",");
+                            // blocks = Configuration.BLOCKLIST.parseString(material);
 
                             try {
                                 bucket = Configuration.BLOCK_BUCKET.parseString(material);
@@ -98,7 +100,11 @@ import java.util.HashSet;
                             current.setComponent(component, bucket);
                         }
                         MainUtil.sendMessage(player, C.GENERATING_COMPONENT);
-                        GlobalBlockQueue.IMP.addTask(() -> plot.removeRunning());
+                        GlobalBlockQueue.IMP.addTask(new Runnable() {
+                            @Override public void run() {
+                                plot.removeRunning();
+                            }
+                        });
                         return true;
                     }
                 }
@@ -108,8 +114,8 @@ import java.util.HashSet;
     }
 
     public boolean noArgs(PlotPlayer player) {
-        ArrayList<String> newValues =
-            new ArrayList<>(Arrays.asList("biome", "alias", "home", "flag"));
+        ArrayList<String> newValues = new ArrayList<>();
+        newValues.addAll(Arrays.asList("biome", "alias", "home", "flag"));
         Plot plot = player.getCurrentPlot();
         if (plot != null) {
             newValues.addAll(

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Setup.java

@@ -25,7 +25,7 @@ import java.util.Map.Entry;
         StringBuilder message = new StringBuilder();
         message.append("&6What generator do you want?");
         for (Entry<String, GeneratorWrapper<?>> entry : SetupUtils.generators.entrySet()) {
-            if (entry.getKey().equals(PlotSquared.get().IMP.getPluginName())) {
+            if (entry.getKey().equals(PlotSquared.imp().getPluginName())) {
                 message.append("\n&8 - &2").append(entry.getKey()).append(" (Default Generator)");
             } else if (entry.getValue().isFull()) {
                 message.append("\n&8 - &7").append(entry.getKey()).append(" (Plot Generator)");
@@ -73,8 +73,8 @@ import java.util.Map.Entry;
                     MainUtil.sendMessage(player,
                         "&cYou must choose a generator!" + prefix + StringMan
                             .join(SetupUtils.generators.keySet(), prefix)
-                            .replaceAll(PlotSquared.get().IMP.getPluginName(),
-                                "&2" + PlotSquared.get().IMP.getPluginName()));
+                            .replaceAll(PlotSquared.imp().getPluginName(),
+                                "&2" + PlotSquared.imp().getPluginName()));
                     sendMessage(player, C.SETUP_INIT);
                     return false;
                 }
@@ -142,7 +142,7 @@ import java.util.Map.Entry;
                         SetupUtils.generators.get(object.plotManager).getPlotGenerator()
                             .processSetup(object);
                     } else {
-                        object.plotManager = PlotSquared.get().IMP.getPluginName();
+                        object.plotManager = PlotSquared.imp().getPluginName();
                         MainUtil.sendMessage(player,
                             "&c[WARNING] The specified generator does not identify as BukkitPlotGenerator");
                         MainUtil.sendMessage(player,
@@ -282,7 +282,7 @@ import java.util.Map.Entry;
                     }
                     MainUtil.sendMessage(player,
                         "&cThe world you specified already exists. After restarting, new terrain will use "
-                            + PlotSquared.get().IMP.getPluginName() + ", however you may need to "
+                            + PlotSquared.imp().getPluginName() + ", however you may need to "
                             + "reset the world for it to generate correctly!");
                 }
                 object.world = args[0];
@@ -318,7 +318,7 @@ import java.util.Map.Entry;
             messages.add(new PlotMessage("What generator do you want?").color("$6"));
             for (Entry<String, GeneratorWrapper<?>> entry : SetupUtils.generators.entrySet()) {
                 final PlotMessage plotMessage = new PlotMessage(" - ").color("$8");
-                if (entry.getKey().equals(PlotSquared.get().IMP.getPluginName())) {
+                if (entry.getKey().equals(PlotSquared.imp().getPluginName())) {
                     plotMessage.text(entry.getKey()).color("$8").tooltip("Select this generator")
                         .color("$2").command("/plot setup generator " + entry.getKey())
                         .text(" (Default Generator)").color("$7");

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Swap.java

@@ -40,7 +40,11 @@ public class Swap extends SubCommand {
             C.PLOTWORLD_INCOMPATIBLE.send(player);
             return false;
         }
-        if (plot1.move(plot2, () -> MainUtil.sendMessage(player, C.SWAP_SUCCESS), true)) {
+        if (plot1.move(plot2, new Runnable() {
+            @Override public void run() {
+                MainUtil.sendMessage(player, C.SWAP_SUCCESS);
+            }
+        }, true)) {
             return true;
         } else {
             MainUtil.sendMessage(player, C.SWAP_OVERLAP);

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Template.java

@@ -15,10 +15,7 @@ import com.github.intellectualsites.plotsquared.plot.util.TaskManager;
 import com.github.intellectualsites.plotsquared.plot.util.WorldUtil;
 import com.github.intellectualsites.plotsquared.plot.util.block.GlobalBlockQueue;
 
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
+import java.io.*;
 import java.util.Set;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipInputStream;
@@ -66,6 +63,9 @@ import java.util.zip.ZipOutputStream;
                 zis.closeEntry();
             }
             return true;
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+            return false;
         } catch (IOException e) {
             e.printStackTrace();
             return false;
@@ -147,8 +147,8 @@ import java.util.zip.ZipOutputStream;
                 } catch (InvalidConfigurationException | IOException e) {
                     e.printStackTrace();
                 }
-                String manager = worldConfig
-                    .getString("generator.plugin", PlotSquared.get().IMP.getPluginName());
+                String manager =
+                    worldConfig.getString("generator.plugin", PlotSquared.imp().getPluginName());
                 String generator = worldConfig.getString("generator.init", manager);
                 int type = worldConfig.getInt("generator.type");
                 int terrain = worldConfig.getInt("generator.terrain");
@@ -161,9 +161,11 @@ import java.util.zip.ZipOutputStream;
                 setup.step = new ConfigurationNode[0];
                 setup.world = world;
                 SetupUtils.manager.setupWorld(setup);
-                GlobalBlockQueue.IMP.addTask(() -> {
-                    MainUtil.sendMessage(player, "Done!");
-                    player.teleport(WorldUtil.IMP.getSpawn(world));
+                GlobalBlockQueue.IMP.addTask(new Runnable() {
+                    @Override public void run() {
+                        MainUtil.sendMessage(player, "Done!");
+                        player.teleport(WorldUtil.IMP.getSpawn(world));
+                    }
                 });
                 return true;
             }
@@ -178,15 +180,17 @@ import java.util.zip.ZipOutputStream;
                     return false;
                 }
                 final PlotManager manager = area.getPlotManager();
-                TaskManager.runTaskAsync(() -> {
-                    try {
-                        manager.exportTemplate(area);
-                    } catch (Exception e) { // Must recover from any exception thrown a third party template manager
-                        e.printStackTrace();
-                        MainUtil.sendMessage(player, "Failed: " + e.getMessage());
-                        return;
+                TaskManager.runTaskAsync(new Runnable() {
+                    @Override public void run() {
+                        try {
+                            manager.exportTemplate(area);
+                        } catch (Exception e) { // Must recover from any exception thrown a third party template manager
+                            e.printStackTrace();
+                            MainUtil.sendMessage(player, "Failed: " + e.getMessage());
+                            return;
+                        }
+                        MainUtil.sendMessage(player, "Done!");
                     }
-                    MainUtil.sendMessage(player, "Done!");
                 });
                 return true;
             default:

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Toggle.java

@@ -70,7 +70,7 @@ import com.github.intellectualsites.plotsquared.plot.util.MainUtil;
         RunnableVal3<Command, Runnable, Runnable> confirm,
         RunnableVal2<Command, CommandResult> whenDone) {
         PlotArea area = player.getApplicablePlotArea();
-        boolean chat = area != null && area.PLOT_CHAT;
+        boolean chat = area == null ? false : area.PLOT_CHAT;
         if (toggle(player, "disabletitles") != chat) {
             MainUtil.sendMessage(player, C.TOGGLE_ENABLED, command.toString());
         } else {

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Trim.java

@@ -95,7 +95,8 @@ import java.util.Set;
             return false;
         }
         MainUtil.sendMessage(null, "Collecting region data...");
-        ArrayList<Plot> plots = new ArrayList<>(PlotSquared.get().getPlots(world));
+        ArrayList<Plot> plots = new ArrayList<>();
+        plots.addAll(PlotSquared.get().getPlots(world));
         if (ExpireManager.IMP != null) {
             plots.removeAll(ExpireManager.IMP.getPendingExpired());
         }
@@ -197,9 +198,11 @@ import java.util.Set;
                         }
                     };
                 } else {
-                    regenTask = () -> {
-                        Trim.TASK = false;
-                        player.sendMessage("Trim done!");
+                    regenTask = new Runnable() {
+                        @Override public void run() {
+                            Trim.TASK = false;
+                            player.sendMessage("Trim done!");
+                        }
                     };
                 }
                 ChunkManager.manager.deleteRegionFiles(world, viable, regenTask);

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/commands/Unlink.java

@@ -39,12 +39,14 @@ import com.github.intellectualsites.plotsquared.plot.util.*;
         } else {
             createRoad = true;
         }
-        Runnable runnable = () -> {
-            if (!plot.unlinkPlot(createRoad, createRoad)) {
-                MainUtil.sendMessage(player, "&cUnlink has been cancelled");
-                return;
+        Runnable runnable = new Runnable() {
+            @Override public void run() {
+                if (!plot.unlinkPlot(createRoad, createRoad)) {
+                    MainUtil.sendMessage(player, "&cUnlink has been cancelled");
+                    return;
+                }
+                MainUtil.sendMessage(player, C.UNLINK_SUCCESS);
             }
-            MainUtil.sendMessage(player, C.UNLINK_SUCCESS);
         };
         if (hasConfirmation(player)) {
             CmdConfirm.addPending(player, "/plot unlink " + plot.getId(), runnable);

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/config/C.java

@@ -915,16 +915,18 @@ public enum C {
             return m;
         }
         Map<String, String> map = new LinkedHashMap<>();
-        for (int i = args.length - 1; i >= 0; i--) {
-            String arg = "" + args[i];
-            if (arg.isEmpty()) {
-                map.put("%s" + i, "");
-            } else {
-                arg = C.color(arg);
-                map.put("%s" + i, arg);
-            }
-            if (i == 0) {
-                map.put("%s", arg);
+        if (args.length > 0) {
+            for (int i = args.length - 1; i >= 0; i--) {
+                String arg = "" + args[i];
+                if (arg == null || arg.isEmpty()) {
+                    map.put("%s" + i, "");
+                } else {
+                    arg = C.color(arg);
+                    map.put("%s" + i, arg);
+                }
+                if (i == 0) {
+                    map.put("%s", arg);
+                }
             }
         }
         m = StringMan.replaceFromMap(m, map);

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/config/Config.java

@@ -120,8 +120,7 @@ public class Config {
      * @param clazz
      * @return
      */
-    public static Map<String, Object> getFields(
-        Class<? extends Settings.Enabled_Components> clazz) {
+    public static Map<String, Object> getFields(Class clazz) {
         HashMap<String, Object> map = new HashMap<>();
         for (Field field : clazz.getFields()) {
             if (java.lang.reflect.Modifier.isStatic(field.getModifiers())) {
@@ -143,8 +142,7 @@ public class Config {
             }
             StringBuilder m = new StringBuilder();
             for (Object obj : listValue) {
-                m.append(System.lineSeparator()).append(spacing).append("- ")
-                    .append(toYamlString(obj, spacing));
+                m.append(System.lineSeparator() + spacing + "- " + toYamlString(obj, spacing));
             }
             return m.toString();
         }
@@ -178,7 +176,7 @@ public class Config {
                     if (value == null && field.getType() != ConfigBlock.class) {
                         setAccessible(field);
                         Class<?>[] classes = clazz.getDeclaredClasses();
-                        for (Class<? extends Object> current : classes) {
+                        for (Class current : classes) {
                             if (StringMan.isEqual(current.getSimpleName(), field.getName())) {
                                 field.set(instance, current.newInstance());
                                 break;

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/database/MySQL.java

@@ -45,7 +45,7 @@ public class MySQL extends Database {
         return this.connection;
     }
 
-    @Override public Connection openConnection() throws SQLException {
+    @Override public Connection openConnection() throws SQLException, ClassNotFoundException {
         if (checkConnection()) {
             return this.connection;
         }
@@ -69,7 +69,7 @@ public class MySQL extends Database {
         return true;
     }
 
-    @Override public ResultSet querySQL(String query) throws SQLException {
+    @Override public ResultSet querySQL(String query) throws SQLException, ClassNotFoundException {
         if (checkConnection()) {
             openConnection();
         }
@@ -78,7 +78,7 @@ public class MySQL extends Database {
         }
     }
 
-    @Override public int updateSQL(String query) throws SQLException {
+    @Override public int updateSQL(String query) throws SQLException, ClassNotFoundException {
         if (checkConnection()) {
             openConnection();
         }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/database/SQLManager.java

@@ -121,40 +121,42 @@ import java.util.concurrent.atomic.AtomicInteger;
         } catch (SQLException e) {
             e.printStackTrace();
         }
-        TaskManager.runTaskAsync(() -> {
-            long last = System.currentTimeMillis();
-            while (true) {
-                if (SQLManager.this.closed) {
-                    break;
-                }
-                boolean hasTask =
-                    !globalTasks.isEmpty() || !playerTasks.isEmpty() || !plotTasks.isEmpty()
-                        || !clusterTasks.isEmpty();
-                if (hasTask) {
-                    if (SQLManager.this.mySQL && System.currentTimeMillis() - last > 550000
-                        || !isValid()) {
-                        last = System.currentTimeMillis();
-                        reconnect();
+        TaskManager.runTaskAsync(new Runnable() {
+            @Override public void run() {
+                long last = System.currentTimeMillis();
+                while (true) {
+                    if (SQLManager.this.closed) {
+                        break;
                     }
-                    if (!sendBatch()) {
-                        try {
-                            if (!getNotifyTasks().isEmpty()) {
-                                for (Runnable task : getNotifyTasks()) {
-                                    TaskManager.runTask(task);
+                    boolean hasTask =
+                        !globalTasks.isEmpty() || !playerTasks.isEmpty() || !plotTasks.isEmpty()
+                            || !clusterTasks.isEmpty();
+                    if (hasTask) {
+                        if (SQLManager.this.mySQL && System.currentTimeMillis() - last > 550000
+                            || !isValid()) {
+                            last = System.currentTimeMillis();
+                            reconnect();
+                        }
+                        if (!sendBatch()) {
+                            try {
+                                if (!getNotifyTasks().isEmpty()) {
+                                    for (Runnable task : getNotifyTasks()) {
+                                        TaskManager.runTask(task);
+                                    }
+                                    getNotifyTasks().clear();
                                 }
-                                getNotifyTasks().clear();
+                                Thread.sleep(50);
+                            } catch (InterruptedException e) {
+                                e.printStackTrace();
                             }
-                            Thread.sleep(50);
+                        }
+                    } else {
+                        try {
+                            Thread.sleep(1000);
                         } catch (InterruptedException e) {
                             e.printStackTrace();
                         }
                     }
-                } else {
-                    try {
-                        Thread.sleep(1000);
-                    } catch (InterruptedException e) {
-                        e.printStackTrace();
-                    }
                 }
             }
         });
@@ -513,74 +515,92 @@ import java.util.concurrent.atomic.AtomicInteger;
     }
 
     @Override public void createPlotsAndData(final List<Plot> myList, final Runnable whenDone) {
-        addGlobalTask(() -> {
-            try {
-                // Create the plots
-                createPlots(myList, () -> {
-                    try {
-                        // Creating datastructures
-                        HashMap<PlotId, Plot> plotMap = new HashMap<>();
-                        for (Plot plot : myList) {
-                            plotMap.put(plot.getId(), plot);
-                        }
-                        ArrayList<SettingsPair> settings = new ArrayList<>();
-                        final ArrayList<UUIDPair> helpers = new ArrayList<>();
-                        final ArrayList<UUIDPair> trusted = new ArrayList<>();
-                        final ArrayList<UUIDPair> denied = new ArrayList<>();
+        addGlobalTask(new Runnable() {
+            @Override public void run() {
+                try {
+                    // Create the plots
+                    createPlots(myList, new Runnable() {
+                        @Override public void run() {
+                            try {
+                                // Creating datastructures
+                                HashMap<PlotId, Plot> plotMap = new HashMap<>();
+                                for (Plot plot : myList) {
+                                    plotMap.put(plot.getId(), plot);
+                                }
+                                ArrayList<SettingsPair> settings = new ArrayList<>();
+                                final ArrayList<UUIDPair> helpers = new ArrayList<>();
+                                final ArrayList<UUIDPair> trusted = new ArrayList<>();
+                                final ArrayList<UUIDPair> denied = new ArrayList<>();
 
-                        // Populating structures
-                        try (PreparedStatement stmt = SQLManager.this.connection
-                            .prepareStatement(SQLManager.this.GET_ALL_PLOTS);
-                            ResultSet result = stmt.executeQuery()) {
-                            while (result.next()) {
-                                int id = result.getInt("id");
-                                int x = result.getInt("plot_id_x");
-                                int y = result.getInt("plot_id_z");
-                                PlotId plotId = new PlotId(x, y);
-                                Plot plot = plotMap.get(plotId);
-                                if (plot != null) {
-                                    settings.add(new SettingsPair(id, plot.getSettings()));
-                                    for (UUID uuid : plot.getDenied()) {
-                                        denied.add(new UUIDPair(id, uuid));
+                                // Populating structures
+                                try (PreparedStatement stmt = SQLManager.this.connection
+                                    .prepareStatement(SQLManager.this.GET_ALL_PLOTS);
+                                    ResultSet result = stmt.executeQuery()) {
+                                    while (result.next()) {
+                                        int id = result.getInt("id");
+                                        int x = result.getInt("plot_id_x");
+                                        int y = result.getInt("plot_id_z");
+                                        PlotId plotId = new PlotId(x, y);
+                                        Plot plot = plotMap.get(plotId);
+                                        if (plot != null) {
+                                            settings.add(new SettingsPair(id, plot.getSettings()));
+                                            for (UUID uuid : plot.getDenied()) {
+                                                denied.add(new UUIDPair(id, uuid));
+                                            }
+                                            for (UUID uuid : plot.getMembers()) {
+                                                trusted.add(new UUIDPair(id, uuid));
+                                            }
+                                            for (UUID uuid : plot.getTrusted()) {
+                                                helpers.add(new UUIDPair(id, uuid));
+                                            }
+                                        }
                                     }
-                                    for (UUID uuid : plot.getMembers()) {
-                                        trusted.add(new UUIDPair(id, uuid));
-                                    }
-                                    for (UUID uuid : plot.getTrusted()) {
-                                        helpers.add(new UUIDPair(id, uuid));
+                                }
+                                createSettings(settings, new Runnable() {
+                                    @Override public void run() {
+                                        createTiers(helpers, "helpers", new Runnable() {
+                                            @Override public void run() {
+                                                createTiers(trusted, "trusted", new Runnable() {
+                                                    @Override public void run() {
+                                                        createTiers(denied, "denied",
+                                                            new Runnable() {
+                                                                @Override public void run() {
+                                                                    try {
+                                                                        SQLManager.this.connection
+                                                                            .commit();
+                                                                    } catch (SQLException e) {
+                                                                        e.printStackTrace();
+                                                                    }
+                                                                    if (whenDone != null) {
+                                                                        whenDone.run();
+                                                                    }
+                                                                }
+                                                            });
+                                                    }
+                                                });
+                                            }
+                                        });
                                     }
+                                });
+                            } catch (SQLException e) {
+                                e.printStackTrace();
+                                PlotSquared.debug("&7[WARN] Failed to set all helpers for plots");
+                                try {
+                                    SQLManager.this.connection.commit();
+                                } catch (SQLException e1) {
+                                    e1.printStackTrace();
                                 }
                             }
                         }
-                        createSettings(settings, () -> createTiers(helpers, "helpers",
-                            () -> createTiers(trusted, "trusted",
-                                () -> createTiers(denied, "denied", () -> {
-                                    try {
-                                        SQLManager.this.connection.commit();
-                                    } catch (SQLException e) {
-                                        e.printStackTrace();
-                                    }
-                                    if (whenDone != null) {
-                                        whenDone.run();
-                                    }
-                                }))));
-                    } catch (SQLException e) {
-                        e.printStackTrace();
-                        PlotSquared.debug("&7[WARN] Failed to set all helpers for plots");
-                        try {
-                            SQLManager.this.connection.commit();
-                        } catch (SQLException e1) {
-                            e1.printStackTrace();
-                        }
+                    });
+                } catch (Exception e) {
+                    e.printStackTrace();
+                    PlotSquared.debug("&7[WARN] Failed to set all helpers for plots");
+                    try {
+                        SQLManager.this.connection.commit();
+                    } catch (SQLException e1) {
+                        e1.printStackTrace();
                     }
-                });
-            } catch (Exception e) {
-                e.printStackTrace();
-                PlotSquared.debug("&7[WARN] Failed to set all helpers for plots");
-                try {
-                    SQLManager.this.connection.commit();
-                } catch (SQLException e1) {
-                    e1.printStackTrace();
                 }
             }
         });
@@ -656,7 +676,7 @@ import java.util.concurrent.atomic.AtomicInteger;
                 stmt.setInt(i * 5 + 1, plot.getId().x);
                 stmt.setInt(i * 5 + 2, plot.getId().y);
                 try {
-                    stmt.setString(i * 5 + 3, plot.guessOwner().toString());
+                    stmt.setString(i * 5 + 3, plot.owner.toString());
                 } catch (SQLException ignored) {
                     stmt.setString(i * 5 + 3, everyone.toString());
                 }
@@ -670,7 +690,7 @@ import java.util.concurrent.atomic.AtomicInteger;
                 stmt.setInt(i * 6 + 2, plot.getId().x);
                 stmt.setInt(i * 6 + 3, plot.getId().y);
                 try {
-                    stmt.setString(i * 6 + 4, plot.guessOwner().toString());
+                    stmt.setString(i * 6 + 4, plot.owner.toString());
                 } catch (SQLException ignored) {
                     stmt.setString(i * 6 + 4, everyone.toString());
                 }
@@ -681,7 +701,7 @@ import java.util.concurrent.atomic.AtomicInteger;
             @Override public void setSQL(PreparedStatement stmt, Plot plot) throws SQLException {
                 stmt.setInt(1, plot.getId().x);
                 stmt.setInt(2, plot.getId().y);
-                stmt.setString(3, plot.guessOwner().toString());
+                stmt.setString(3, plot.owner.toString());
                 stmt.setString(4, plot.getArea().toString());
                 stmt.setTimestamp(5, new Timestamp(plot.getTimestamp()));
 
@@ -909,7 +929,11 @@ import java.util.concurrent.atomic.AtomicInteger;
                 stmt.setInt(1, pair.id);
             }
         };
-        addGlobalTask(() -> setBulk(myList, mod, whenDone));
+        addGlobalTask(new Runnable() {
+            @Override public void run() {
+                setBulk(myList, mod, whenDone);
+            }
+        });
     }
 
     public void createEmptySettings(final ArrayList<Integer> myList, final Runnable whenDone) {
@@ -953,15 +977,20 @@ import java.util.concurrent.atomic.AtomicInteger;
                 stmt.setInt(1, id);
             }
         };
-        addGlobalTask(() -> setBulk(myList, mod, whenDone));
+        addGlobalTask(new Runnable() {
+            @Override public void run() {
+                setBulk(myList, mod, whenDone);
+            }
+        });
     }
 
     public void createPlotSafe(final Plot plot, final Runnable success, final Runnable failure) {
+        final long timestamp = plot.getTimestamp();
         addPlotTask(plot, new UniqueStatement("createPlotSafe_" + plot.hashCode()) {
             @Override public void set(PreparedStatement stmt) throws SQLException {
                 stmt.setInt(1, plot.getId().x);
                 stmt.setInt(2, plot.getId().y);
-                stmt.setString(3, plot.guessOwner().toString());
+                stmt.setString(3, plot.owner.toString());
                 stmt.setString(4, plot.getArea().toString());
                 stmt.setTimestamp(5, new Timestamp(plot.getTimestamp()));
                 stmt.setString(6, plot.getArea().toString());
@@ -1028,7 +1057,7 @@ import java.util.concurrent.atomic.AtomicInteger;
             @Override public void set(PreparedStatement stmt) throws SQLException {
                 stmt.setInt(1, plot.getId().x);
                 stmt.setInt(2, plot.getId().y);
-                stmt.setString(3, plot.guessOwner().toString());
+                stmt.setString(3, plot.owner.toString());
                 stmt.setString(4, plot.getArea().toString());
                 stmt.setTimestamp(5, new Timestamp(plot.getTimestamp()));
             }
@@ -1322,7 +1351,7 @@ import java.util.concurrent.atomic.AtomicInteger;
     @Override public void delete(final Plot plot) {
         PlotSquared.debug(
             "Deleting plot... Id: " + plot.getId() + " World: " + plot.getWorldName() + " Owner: "
-                + plot.guessOwner() + " Index: " + plot.temp);
+                + plot.owner + " Index: " + plot.temp);
         deleteSettings(plot);
         deleteDenied(plot);
         deleteHelpers(plot);
@@ -1350,7 +1379,7 @@ import java.util.concurrent.atomic.AtomicInteger;
     @Override public void createPlotSettings(final int id, Plot plot) {
         PlotSquared.debug(
             "Creating plot... Id: " + plot.getId() + " World: " + plot.getWorldName() + " Owner: "
-                + plot.guessOwner() + " Index: " + id);
+                + plot.owner + " Index: " + id);
         addPlotTask(plot, new UniqueStatement("createPlotSettings") {
             @Override public void set(PreparedStatement stmt) throws SQLException {
                 stmt.setInt(1, id);
@@ -1656,8 +1685,8 @@ import java.util.concurrent.atomic.AtomicInteger;
                                 time = System.currentTimeMillis() + id;
                             }
                         }
-                        Plot p = new Plot(plot_id, user, new HashSet<>(), new HashSet<>(),
-                            new HashSet<>(), "", null, null, null,
+                        Plot p = new Plot(plot_id, user, new HashSet<UUID>(), new HashSet<UUID>(),
+                            new HashSet<UUID>(), "", null, null, null,
                             new boolean[] {false, false, false, false}, time, id);
                         HashMap<PlotId, Plot> map = newPlots.get(areaid);
                         if (map != null) {
@@ -2007,96 +2036,103 @@ import java.util.concurrent.atomic.AtomicInteger;
      * Purge all plots with the following database IDs
      */
     @Override public void purgeIds(final Set<Integer> uniqueIds) {
-        addGlobalTask(() -> {
-            if (!uniqueIds.isEmpty()) {
-                try {
-                    ArrayList<Integer> uniqueIdsList = new ArrayList<>(uniqueIds);
-                    String stmt_prefix = "";
-                    int size = uniqueIdsList.size();
-                    int packet = 990;
-                    int amount = size / packet;
-                    for (int j = 0; j <= amount; j++) {
-                        PlotSquared.debug("Purging " + (j * packet) + " / " + size);
-                        List<Integer> subList =
-                            uniqueIdsList.subList(j * packet, Math.min(size, (j + 1) * packet));
-                        if (subList.isEmpty()) {
-                            break;
+        addGlobalTask(new Runnable() {
+            @Override public void run() {
+                if (!uniqueIds.isEmpty()) {
+                    try {
+                        ArrayList<Integer> uniqueIdsList = new ArrayList<Integer>(uniqueIds);
+                        String stmt_prefix = "";
+                        int size = uniqueIdsList.size();
+                        int packet = 990;
+                        int amount = size / packet;
+                        int count = 0;
+                        int last = -1;
+                        for (int j = 0; j <= amount; j++) {
+                            PlotSquared.debug("Purging " + (j * packet) + " / " + size);
+                            List<Integer> subList =
+                                uniqueIdsList.subList(j * packet, Math.min(size, (j + 1) * packet));
+                            if (subList.isEmpty()) {
+                                break;
+                            }
+                            StringBuilder idstr2 = new StringBuilder("");
+                            stmt_prefix = "";
+                            for (Integer id : subList) {
+                                idstr2.append(stmt_prefix).append(id);
+                                stmt_prefix = " OR `id` = ";
+                            }
+                            stmt_prefix = "";
+                            StringBuilder idstr = new StringBuilder();
+                            for (Integer id : subList) {
+                                idstr.append(stmt_prefix).append(id);
+                                stmt_prefix = " OR `plot_plot_id` = ";
+                            }
+                            PreparedStatement stmt = SQLManager.this.connection.prepareStatement(
+                                "DELETE FROM `" + SQLManager.this.prefix
+                                    + "plot_helpers` WHERE `plot_plot_id` = " + idstr);
+                            stmt.executeUpdate();
+                            stmt.close();
+                            stmt = SQLManager.this.connection.prepareStatement(
+                                "DELETE FROM `" + SQLManager.this.prefix
+                                    + "plot_denied` WHERE `plot_plot_id` = " + idstr);
+                            stmt.executeUpdate();
+                            stmt.close();
+                            stmt = SQLManager.this.connection.prepareStatement(
+                                "DELETE FROM `" + SQLManager.this.prefix
+                                    + "plot_settings` WHERE `plot_plot_id` = " + idstr);
+                            stmt.executeUpdate();
+                            stmt.close();
+                            stmt = SQLManager.this.connection.prepareStatement(
+                                "DELETE FROM `" + SQLManager.this.prefix
+                                    + "plot_trusted` WHERE `plot_plot_id` = " + idstr);
+                            stmt.executeUpdate();
+                            stmt.close();
+                            stmt = SQLManager.this.connection.prepareStatement(
+                                "DELETE FROM `" + SQLManager.this.prefix + "plot` WHERE `id` = "
+                                    + idstr2);
+                            stmt.executeUpdate();
+                            stmt.close();
+                            commit();
                         }
-                        StringBuilder idstr2 = new StringBuilder("");
-                        stmt_prefix = "";
-                        for (Integer id : subList) {
-                            idstr2.append(stmt_prefix).append(id);
-                            stmt_prefix = " OR `id` = ";
-                        }
-                        stmt_prefix = "";
-                        StringBuilder idstr = new StringBuilder();
-                        for (Integer id : subList) {
-                            idstr.append(stmt_prefix).append(id);
-                            stmt_prefix = " OR `plot_plot_id` = ";
-                        }
-                        PreparedStatement stmt = SQLManager.this.connection.prepareStatement(
-                            "DELETE FROM `" + SQLManager.this.prefix
-                                + "plot_helpers` WHERE `plot_plot_id` = " + idstr);
-                        stmt.executeUpdate();
-                        stmt.close();
-                        stmt = SQLManager.this.connection.prepareStatement(
-                            "DELETE FROM `" + SQLManager.this.prefix
-                                + "plot_denied` WHERE `plot_plot_id` = " + idstr);
-                        stmt.executeUpdate();
-                        stmt.close();
-                        stmt = SQLManager.this.connection.prepareStatement(
-                            "DELETE FROM `" + SQLManager.this.prefix
-                                + "plot_settings` WHERE `plot_plot_id` = " + idstr);
-                        stmt.executeUpdate();
-                        stmt.close();
-                        stmt = SQLManager.this.connection.prepareStatement(
-                            "DELETE FROM `" + SQLManager.this.prefix
-                                + "plot_trusted` WHERE `plot_plot_id` = " + idstr);
-                        stmt.executeUpdate();
-                        stmt.close();
-                        stmt = SQLManager.this.connection.prepareStatement(
-                            "DELETE FROM `" + SQLManager.this.prefix + "plot` WHERE `id` = "
-                                + idstr2);
-                        stmt.executeUpdate();
-                        stmt.close();
-                        commit();
+                    } catch (SQLException e) {
+                        e.printStackTrace();
+                        PlotSquared.debug("&c[ERROR] FAILED TO PURGE PLOTS!");
+                        return;
                     }
-                } catch (SQLException e) {
-                    e.printStackTrace();
-                    PlotSquared.debug("&c[ERROR] FAILED TO PURGE PLOTS!");
-                    return;
                 }
+                PlotSquared.debug("&6[INFO] SUCCESSFULLY PURGED " + uniqueIds.size() + " PLOTS!");
             }
-            PlotSquared.debug("&6[INFO] SUCCESSFULLY PURGED " + uniqueIds.size() + " PLOTS!");
         });
     }
 
     @Override public void purge(final PlotArea area, final Set<PlotId> plots) {
-        addGlobalTask(() -> {
-            try (PreparedStatement stmt = SQLManager.this.connection.prepareStatement(
-                "SELECT `id`, `plot_id_x`, `plot_id_z` FROM `" + SQLManager.this.prefix
-                    + "plot` WHERE `world` = ?")) {
-                stmt.setString(1, area.toString());
-                Set<Integer> ids;
-                try (ResultSet r = stmt.executeQuery()) {
-                    ids = new HashSet<>();
-                    while (r.next()) {
-                        PlotId plot_id = new PlotId(r.getInt("plot_id_x"), r.getInt("plot_id_z"));
-                        if (plots.contains(plot_id)) {
-                            ids.add(r.getInt("id"));
+        addGlobalTask(new Runnable() {
+            @Override public void run() {
+                try (PreparedStatement stmt = SQLManager.this.connection.prepareStatement(
+                    "SELECT `id`, `plot_id_x`, `plot_id_z` FROM `" + SQLManager.this.prefix
+                        + "plot` WHERE `world` = ?")) {
+                    stmt.setString(1, area.toString());
+                    Set<Integer> ids;
+                    try (ResultSet r = stmt.executeQuery()) {
+                        ids = new HashSet<>();
+                        while (r.next()) {
+                            PlotId plot_id =
+                                new PlotId(r.getInt("plot_id_x"), r.getInt("plot_id_z"));
+                            if (plots.contains(plot_id)) {
+                                ids.add(r.getInt("id"));
+                            }
                         }
                     }
+                    purgeIds(ids);
+                } catch (SQLException e) {
+                    e.printStackTrace();
+                    PlotSquared.debug("&c[ERROR] FAILED TO PURGE AREA '" + area + "'!");
+                }
+                for (Iterator<PlotId> iterator = plots.iterator(); iterator.hasNext(); ) {
+                    PlotId plotId = iterator.next();
+                    iterator.remove();
+                    PlotId id = new PlotId(plotId.x, plotId.y);
+                    area.removePlot(id);
                 }
-                purgeIds(ids);
-            } catch (SQLException e) {
-                e.printStackTrace();
-                PlotSquared.debug("&c[ERROR] FAILED TO PURGE AREA '" + area + "'!");
-            }
-            for (Iterator<PlotId> iterator = plots.iterator(); iterator.hasNext(); ) {
-                PlotId plotId = iterator.next();
-                iterator.remove();
-                PlotId id = new PlotId(plotId.x, plotId.y);
-                area.removePlot(id);
             }
         });
     }
@@ -2487,7 +2523,11 @@ import java.util.concurrent.atomic.AtomicInteger;
                 }
 
                 resultSet.close();
-                TaskManager.runTaskAsync(() -> result.run(metaMap));
+                TaskManager.runTaskAsync(new Runnable() {
+                    @Override public void run() {
+                        result.run(metaMap);
+                    }
+                });
             }
 
         });
@@ -2551,8 +2591,11 @@ import java.util.concurrent.atomic.AtomicInteger;
                     }
                     cluster = new PlotCluster(null, pos1, pos2, user, id);
                     clusters.put(id, cluster);
-                    Set<PlotCluster> set =
-                        newClusters.computeIfAbsent(areaid, k -> new HashSet<>());
+                    Set<PlotCluster> set = newClusters.get(areaid);
+                    if (set == null) {
+                        set = new HashSet<>();
+                        newClusters.put(areaid, set);
+                    }
                     set.add(cluster);
                 }
                 //Getting helpers
@@ -2930,10 +2973,10 @@ import java.util.concurrent.atomic.AtomicInteger;
                 continue;
             }
             // owner
-            if (!plot.guessOwner().equals(dataPlot.guessOwner())) {
-                PlotSquared.debug(
-                    "&8 - &7Setting owner: " + plot + " -> " + MainUtil.getName(plot.guessOwner()));
-                setOwner(plot, plot.guessOwner());
+            if (!plot.owner.equals(dataPlot.owner)) {
+                PlotSquared
+                    .debug("&8 - &7Setting owner: " + plot + " -> " + MainUtil.getName(plot.owner));
+                setOwner(plot, plot.owner);
             }
             // trusted
             if (!plot.getTrusted().equals(dataPlot.getTrusted())) {
@@ -3026,83 +3069,87 @@ import java.util.concurrent.atomic.AtomicInteger;
     @Override
     public void replaceWorld(final String oldWorld, final String newWorld, final PlotId min,
         final PlotId max) {
-        addGlobalTask(() -> {
-            if (min == null) {
-                try (PreparedStatement stmt = SQLManager.this.connection.prepareStatement(
-                    "UPDATE `" + SQLManager.this.prefix
-                        + "plot` SET `world` = ? WHERE `world` = ?")) {
-                    stmt.setString(1, newWorld);
-                    stmt.setString(2, oldWorld);
-                    stmt.executeUpdate();
-                } catch (SQLException e) {
-                    e.printStackTrace();
-                }
-                try (PreparedStatement stmt = SQLManager.this.connection.prepareStatement(
-                    "UPDATE `" + SQLManager.this.prefix
-                        + "cluster` SET `world` = ? WHERE `world` = ?")) {
-                    stmt.setString(1, newWorld);
-                    stmt.setString(2, oldWorld);
-                    stmt.executeUpdate();
-                } catch (SQLException e) {
-                    e.printStackTrace();
-                }
-            } else {
-                try (PreparedStatement stmt = SQLManager.this.connection.prepareStatement(
-                    "UPDATE `" + SQLManager.this.prefix
-                        + "plot` SET `world` = ? WHERE `world` = ? AND `plot_id_x` BETWEEN ? AND ? AND `plot_id_z` BETWEEN ? AND ?")) {
-                    stmt.setString(1, newWorld);
-                    stmt.setString(2, oldWorld);
-                    stmt.setInt(3, min.x);
-                    stmt.setInt(4, max.x);
-                    stmt.setInt(5, min.y);
-                    stmt.setInt(6, max.y);
-                    stmt.executeUpdate();
-                } catch (SQLException e) {
-                    e.printStackTrace();
-                }
-                try (PreparedStatement stmt = SQLManager.this.connection.prepareStatement(
-                    "UPDATE `" + SQLManager.this.prefix
-                        + "cluster` SET `world` = ? WHERE `world` = ? AND `pos1_x` <= ? AND `pos1_z` <= ? AND `pos2_x` >= ? AND `pos2_z` >= ?")) {
-                    stmt.setString(1, newWorld);
-                    stmt.setString(2, oldWorld);
-                    stmt.setInt(3, max.x);
-                    stmt.setInt(4, max.y);
-                    stmt.setInt(5, min.x);
-                    stmt.setInt(6, min.y);
-                    stmt.executeUpdate();
-                } catch (SQLException e) {
-                    e.printStackTrace();
+        addGlobalTask(new Runnable() {
+            @Override public void run() {
+                if (min == null) {
+                    try (PreparedStatement stmt = SQLManager.this.connection.prepareStatement(
+                        "UPDATE `" + SQLManager.this.prefix
+                            + "plot` SET `world` = ? WHERE `world` = ?")) {
+                        stmt.setString(1, newWorld);
+                        stmt.setString(2, oldWorld);
+                        stmt.executeUpdate();
+                    } catch (SQLException e) {
+                        e.printStackTrace();
+                    }
+                    try (PreparedStatement stmt = SQLManager.this.connection.prepareStatement(
+                        "UPDATE `" + SQLManager.this.prefix
+                            + "cluster` SET `world` = ? WHERE `world` = ?")) {
+                        stmt.setString(1, newWorld);
+                        stmt.setString(2, oldWorld);
+                        stmt.executeUpdate();
+                    } catch (SQLException e) {
+                        e.printStackTrace();
+                    }
+                } else {
+                    try (PreparedStatement stmt = SQLManager.this.connection.prepareStatement(
+                        "UPDATE `" + SQLManager.this.prefix
+                            + "plot` SET `world` = ? WHERE `world` = ? AND `plot_id_x` BETWEEN ? AND ? AND `plot_id_z` BETWEEN ? AND ?")) {
+                        stmt.setString(1, newWorld);
+                        stmt.setString(2, oldWorld);
+                        stmt.setInt(3, min.x);
+                        stmt.setInt(4, max.x);
+                        stmt.setInt(5, min.y);
+                        stmt.setInt(6, max.y);
+                        stmt.executeUpdate();
+                    } catch (SQLException e) {
+                        e.printStackTrace();
+                    }
+                    try (PreparedStatement stmt = SQLManager.this.connection.prepareStatement(
+                        "UPDATE `" + SQLManager.this.prefix
+                            + "cluster` SET `world` = ? WHERE `world` = ? AND `pos1_x` <= ? AND `pos1_z` <= ? AND `pos2_x` >= ? AND `pos2_z` >= ?")) {
+                        stmt.setString(1, newWorld);
+                        stmt.setString(2, oldWorld);
+                        stmt.setInt(3, max.x);
+                        stmt.setInt(4, max.y);
+                        stmt.setInt(5, min.x);
+                        stmt.setInt(6, min.y);
+                        stmt.executeUpdate();
+                    } catch (SQLException e) {
+                        e.printStackTrace();
+                    }
                 }
             }
         });
     }
 
     @Override public void replaceUUID(final UUID old, final UUID now) {
-        addGlobalTask(() -> {
-            try (Statement stmt = SQLManager.this.connection.createStatement()) {
-                stmt.executeUpdate(
-                    "UPDATE `" + SQLManager.this.prefix + "cluster` SET `owner` = '" + now
-                        .toString() + "' WHERE `owner` = '" + old.toString() + '\'');
-                stmt.executeUpdate(
-                    "UPDATE `" + SQLManager.this.prefix + "cluster_helpers` SET `user_uuid` = '"
-                        + now.toString() + "' WHERE `user_uuid` = '" + old.toString() + '\'');
-                stmt.executeUpdate(
-                    "UPDATE `" + SQLManager.this.prefix + "cluster_invited` SET `user_uuid` = '"
-                        + now.toString() + "' WHERE `user_uuid` = '" + old.toString() + '\'');
-                stmt.executeUpdate(
-                    "UPDATE `" + SQLManager.this.prefix + "plot` SET `owner` = '" + now.toString()
-                        + "' WHERE `owner` = '" + old.toString() + '\'');
-                stmt.executeUpdate(
-                    "UPDATE `" + SQLManager.this.prefix + "plot_denied` SET `user_uuid` = '" + now
-                        .toString() + "' WHERE `user_uuid` = '" + old.toString() + '\'');
-                stmt.executeUpdate(
-                    "UPDATE `" + SQLManager.this.prefix + "plot_helpers` SET `user_uuid` = '" + now
-                        .toString() + "' WHERE `user_uuid` = '" + old.toString() + '\'');
-                stmt.executeUpdate(
-                    "UPDATE `" + SQLManager.this.prefix + "plot_trusted` SET `user_uuid` = '" + now
-                        .toString() + "' WHERE `user_uuid` = '" + old.toString() + '\'');
-            } catch (SQLException e) {
-                e.printStackTrace();
+        addGlobalTask(new Runnable() {
+            @Override public void run() {
+                try (Statement stmt = SQLManager.this.connection.createStatement()) {
+                    stmt.executeUpdate(
+                        "UPDATE `" + SQLManager.this.prefix + "cluster` SET `owner` = '" + now
+                            .toString() + "' WHERE `owner` = '" + old.toString() + '\'');
+                    stmt.executeUpdate(
+                        "UPDATE `" + SQLManager.this.prefix + "cluster_helpers` SET `user_uuid` = '"
+                            + now.toString() + "' WHERE `user_uuid` = '" + old.toString() + '\'');
+                    stmt.executeUpdate(
+                        "UPDATE `" + SQLManager.this.prefix + "cluster_invited` SET `user_uuid` = '"
+                            + now.toString() + "' WHERE `user_uuid` = '" + old.toString() + '\'');
+                    stmt.executeUpdate(
+                        "UPDATE `" + SQLManager.this.prefix + "plot` SET `owner` = '" + now
+                            .toString() + "' WHERE `owner` = '" + old.toString() + '\'');
+                    stmt.executeUpdate(
+                        "UPDATE `" + SQLManager.this.prefix + "plot_denied` SET `user_uuid` = '"
+                            + now.toString() + "' WHERE `user_uuid` = '" + old.toString() + '\'');
+                    stmt.executeUpdate(
+                        "UPDATE `" + SQLManager.this.prefix + "plot_helpers` SET `user_uuid` = '"
+                            + now.toString() + "' WHERE `user_uuid` = '" + old.toString() + '\'');
+                    stmt.executeUpdate(
+                        "UPDATE `" + SQLManager.this.prefix + "plot_trusted` SET `user_uuid` = '"
+                            + now.toString() + "' WHERE `user_uuid` = '" + old.toString() + '\'');
+                } catch (SQLException e) {
+                    e.printStackTrace();
+                }
             }
         });
     }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/flag/FlagManager.java

@@ -146,7 +146,7 @@ public class FlagManager {
      * @return
      */
     public static <V> V getPlotFlagRaw(Plot plot, Flag<V> flag) {
-        if (plot.guessOwner() == null) {
+        if (plot.owner == null) {
             return null;
         }
         return getSettingFlag(plot.getArea(), plot.getSettings(), flag);

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/generator/ClassicPlotManager.java

@@ -244,6 +244,7 @@ public class ClassicPlotManager extends SquarePlotManager {
         Location bot = plot.getExtendedBottomAbs()
             .subtract(plot.getMerged(3) ? 0 : 1, 0, plot.getMerged(0) ? 0 : 1);
         Location top = plot.getExtendedTopAbs().add(1, 0, 1);
+        PseudoRandom random = new PseudoRandom();
         LocalBlockQueue queue = plotArea.getQueue(false);
         int y = dpw.WALL_HEIGHT + 1;
         if (!plot.getMerged(0)) {

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/generator/HybridGen.java

@@ -6,10 +6,12 @@ import com.github.intellectualsites.plotsquared.plot.util.MathMan;
 import com.github.intellectualsites.plotsquared.plot.util.block.ScopedLocalBlockQueue;
 import com.sk89q.worldedit.world.block.BaseBlock;
 
+import java.util.HashMap;
+
 public class HybridGen extends IndependentPlotGenerator {
 
     @Override public String getName() {
-        return PlotSquared.get().IMP.getPluginName();
+        return PlotSquared.imp().getPluginName();
     }
 
     private void placeSchem(HybridPlotWorld world, ScopedLocalBlockQueue result, short relativeX,
@@ -39,6 +41,8 @@ public class HybridGen extends IndependentPlotGenerator {
         }
         // Coords
         Location min = result.getMin();
+        int cx = min.getX() >> 4;
+        int cz = min.getZ() >> 4;
         int bx = (min.getX()) - hpw.ROAD_OFFSET_X;
         int bz = (min.getZ()) - hpw.ROAD_OFFSET_Z;
         short rbx;
@@ -82,6 +86,7 @@ public class HybridGen extends IndependentPlotGenerator {
             }
         }
         // generation
+        HashMap<Integer, BaseBlock[]> sch = hpw.G_SCH;
         for (short x = 0; x < 16; x++) {
             if (gx[x]) {
                 for (short z = 0; z < 16; z++) {

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/generator/HybridPlotManager.java

@@ -197,10 +197,12 @@ public class HybridPlotManager extends ClassicPlotManager {
                 // And finally set the schematic, the y value is unimportant for this function
                 pastePlotSchematic(dpw, queue, bot, top);
             }
-        }, () -> {
-            queue.enqueue();
-            // And notify whatever called this when plot clearing is done
-            GlobalBlockQueue.IMP.addTask(whenDone);
+        }, new Runnable() {
+            @Override public void run() {
+                queue.enqueue();
+                // And notify whatever called this when plot clearing is done
+                GlobalBlockQueue.IMP.addTask(whenDone);
+            }
         }, 10);
         return true;
     }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/generator/HybridUtils.java

@@ -212,7 +212,11 @@ public abstract class HybridUtils {
                                 PlotSquared.debug("&d - Potentially skipping 1024 chunks");
                                 PlotSquared.debug("&d - TODO: recommend chunkster if corrupt");
                             }
-                            GlobalBlockQueue.IMP.addTask(() -> TaskManager.runTaskLater(task, 20));
+                            GlobalBlockQueue.IMP.addTask(new Runnable() {
+                                @Override public void run() {
+                                    TaskManager.runTaskLater(task, 20);
+                                }
+                            });
                         }
                     });
                 }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/listener/PlotListener.java

@@ -158,21 +158,23 @@ public class PlotListener {
             if (titles) {
                 if (!C.TITLE_ENTERED_PLOT.s().isEmpty() || !C.TITLE_ENTERED_PLOT_SUB.s()
                     .isEmpty()) {
-                    TaskManager.runTaskLaterAsync(() -> {
-                        Plot lastPlot = player.getMeta(PlotPlayer.META_LAST_PLOT);
-                        if ((lastPlot != null) && plot.getId().equals(lastPlot.getId())) {
-                            Map<String, String> replacements = new HashMap<>();
-                            replacements.put("%x%", String.valueOf(lastPlot.getId().x));
-                            replacements.put("%z%", lastPlot.getId().y + "");
-                            replacements.put("%world%", plot.getArea().toString());
-                            replacements.put("%greeting%", greeting);
-                            replacements.put("%alias", plot.toString());
-                            replacements.put("%s", MainUtil.getName(plot.guessOwner()));
-                            String main =
-                                StringMan.replaceFromMap(C.TITLE_ENTERED_PLOT.s(), replacements);
-                            String sub = StringMan
-                                .replaceFromMap(C.TITLE_ENTERED_PLOT_SUB.s(), replacements);
-                            AbstractTitle.sendTitle(player, main, sub);
+                    TaskManager.runTaskLaterAsync(new Runnable() {
+                        @Override public void run() {
+                            Plot lastPlot = player.getMeta(PlotPlayer.META_LAST_PLOT);
+                            if ((lastPlot != null) && plot.getId().equals(lastPlot.getId())) {
+                                Map<String, String> replacements = new HashMap<>();
+                                replacements.put("%x%", String.valueOf(lastPlot.getId().x));
+                                replacements.put("%z%", lastPlot.getId().y + "");
+                                replacements.put("%world%", plot.getArea().toString());
+                                replacements.put("%greeting%", greeting);
+                                replacements.put("%alias", plot.toString());
+                                replacements.put("%s", MainUtil.getName(plot.owner));
+                                String main = StringMan
+                                    .replaceFromMap(C.TITLE_ENTERED_PLOT.s(), replacements);
+                                String sub = StringMan
+                                    .replaceFromMap(C.TITLE_ENTERED_PLOT_SUB.s(), replacements);
+                                AbstractTitle.sendTitle(player, main, sub);
+                            }
                         }
                     }, 20);
                 }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/object/Plot.java

@@ -805,12 +805,14 @@ public class Plot {
         Runnable run = new Runnable() {
             @Override public void run() {
                 if (queue.isEmpty()) {
-                    Runnable run = () -> {
-                        for (RegionWrapper region : regions) {
-                            Location[] corners = region.getCorners(getWorldName());
-                            ChunkManager.manager.clearAllEntities(corners[0], corners[1]);
+                    Runnable run = new Runnable() {
+                        @Override public void run() {
+                            for (RegionWrapper region : regions) {
+                                Location[] corners = region.getCorners(getWorldName());
+                                ChunkManager.manager.clearAllEntities(corners[0], corners[1]);
+                            }
+                            TaskManager.runTask(whenDone);
                         }
-                        TaskManager.runTask(whenDone);
                     };
                     for (Plot current : plots) {
                         if (isDelete || current.owner == null) {
@@ -925,9 +927,11 @@ public class Plot {
             current.setMerged(merged);
         }
         if (createSign) {
-            GlobalBlockQueue.IMP.addTask(() -> {
-                for (Plot current : plots) {
-                    current.setSign(MainUtil.getName(current.owner));
+            GlobalBlockQueue.IMP.addTask(new Runnable() {
+                @Override public void run() {
+                    for (Plot current : plots) {
+                        current.setSign(MainUtil.getName(current.owner));
+                    }
                 }
             });
         }
@@ -946,7 +950,11 @@ public class Plot {
         if (!isLoaded())
             return;
         if (!PlotSquared.get().isMainThread(Thread.currentThread())) {
-            TaskManager.runTask(() -> Plot.this.setSign(name));
+            TaskManager.runTask(new Runnable() {
+                @Override public void run() {
+                    Plot.this.setSign(name);
+                }
+            });
             return;
         }
         PlotManager manager = this.area.getPlotManager();
@@ -1036,11 +1044,13 @@ public class Plot {
             return false;
         }
         final Set<Plot> plots = this.getConnectedPlots();
-        this.clear(false, true, () -> {
-            for (Plot current : plots) {
-                current.unclaim();
+        this.clear(false, true, new Runnable() {
+            @Override public void run() {
+                for (Plot current : plots) {
+                    current.unclaim();
+                }
+                TaskManager.runTask(whenDone);
             }
-            TaskManager.runTask(whenDone);
         });
         return true;
     }
@@ -1474,10 +1484,12 @@ public class Plot {
         this.getDenied().clear();
         this.settings = new PlotSettings();
         if (this.area.addPlot(this)) {
-            DBFunc.createPlotAndSettings(this, () -> {
-                PlotArea plotworld = Plot.this.area;
-                if (notify && plotworld.AUTO_MERGE) {
-                    Plot.this.autoMerge(-1, Integer.MAX_VALUE, uuid, true);
+            DBFunc.createPlotAndSettings(this, new Runnable() {
+                @Override public void run() {
+                    PlotArea plotworld = Plot.this.area;
+                    if (notify && plotworld.AUTO_MERGE) {
+                        Plot.this.autoMerge(-1, Integer.MAX_VALUE, uuid, true);
+                    }
                 }
             });
             return true;
@@ -1826,14 +1838,16 @@ public class Plot {
                         TaskManager.runTask(whenDone);
                     }
                 } else {
-                    TaskManager.runTaskAsync(() -> {
-                        String name = Plot.this.id + "," + Plot.this.area + ',' + MainUtil
-                            .getName(Plot.this.owner);
-                        boolean result = SchematicHandler.manager.save(value,
-                            Settings.Paths.SCHEMATICS + File.separator + name + ".schematic");
-                        if (whenDone != null) {
-                            whenDone.value = result;
-                            TaskManager.runTask(whenDone);
+                    TaskManager.runTaskAsync(new Runnable() {
+                        @Override public void run() {
+                            String name = Plot.this.id + "," + Plot.this.area + ',' + MainUtil
+                                .getName(Plot.this.owner);
+                            boolean result = SchematicHandler.manager.save(value,
+                                Settings.Paths.SCHEMATICS + File.separator + name + ".schematic");
+                            if (whenDone != null) {
+                                whenDone.value = result;
+                                TaskManager.runTask(whenDone);
+                            }
                         }
                     });
                 }
@@ -2543,7 +2557,9 @@ public class Plot {
             }
             Location gtopabs = this.area.getPlotAbs(top).getTopAbs();
             Location gbotabs = this.area.getPlotAbs(bot).getBottomAbs();
-            visited.addAll(MainUtil.getPlotSelectionIds(bot, top));
+            for (PlotId id : MainUtil.getPlotSelectionIds(bot, top)) {
+                visited.add(id);
+            }
             for (int x = bot.x; x <= top.x; x++) {
                 Plot plot = this.area.getPlotAbs(new PlotId(x, top.y));
                 if (plot.getMerged(2)) {
@@ -2610,10 +2626,12 @@ public class Plot {
      * - Usually called when the plot state changes (unclaimed/claimed/flag change etc)
      */
     public void reEnter() {
-        TaskManager.runTaskLater(() -> {
-            for (PlotPlayer pp : Plot.this.getPlayersInPlot()) {
-                PlotListener.plotExit(pp, Plot.this);
-                PlotListener.plotEntry(pp, Plot.this);
+        TaskManager.runTaskLater(new Runnable() {
+            @Override public void run() {
+                for (PlotPlayer pp : Plot.this.getPlayersInPlot()) {
+                    PlotListener.plotExit(pp, Plot.this);
+                    PlotListener.plotEntry(pp, Plot.this);
+                }
             }
         }, 1);
     }
@@ -2669,15 +2687,17 @@ public class Plot {
             MainUtil.sendMessage(player, C.TELEPORT_IN_SECONDS, Settings.Teleport.DELAY + "");
             final String name = player.getName();
             TaskManager.TELEPORT_QUEUE.add(name);
-            TaskManager.runTaskLater(() -> {
-                if (!TaskManager.TELEPORT_QUEUE.contains(name)) {
-                    MainUtil.sendMessage(player, C.TELEPORT_FAILED);
-                    return;
-                }
-                TaskManager.TELEPORT_QUEUE.remove(name);
-                if (player.isOnline()) {
-                    MainUtil.sendMessage(player, C.TELEPORTED_TO_PLOT);
-                    player.teleport(location);
+            TaskManager.runTaskLater(new Runnable() {
+                @Override public void run() {
+                    if (!TaskManager.TELEPORT_QUEUE.contains(name)) {
+                        MainUtil.sendMessage(player, C.TELEPORT_FAILED);
+                        return;
+                    }
+                    TaskManager.TELEPORT_QUEUE.remove(name);
+                    if (player.isOnline()) {
+                        MainUtil.sendMessage(player, C.TELEPORTED_TO_PLOT);
+                        player.teleport(location);
+                    }
                 }
             }, Settings.Teleport.DELAY * 20);
             return true;
@@ -2864,8 +2884,11 @@ public class Plot {
                 final Location pos2 = corners[1];
                 Location newPos = pos1.clone().add(offsetX, 0, offsetZ);
                 newPos.setWorld(destination.getWorldName());
-                ChunkManager.manager.copyRegion(pos1, pos2, newPos,
-                    () -> ChunkManager.manager.regenerateRegion(pos1, pos2, false, task));
+                ChunkManager.manager.copyRegion(pos1, pos2, newPos, new Runnable() {
+                    @Override public void run() {
+                        ChunkManager.manager.regenerateRegion(pos1, pos2, false, task);
+                    }
+                });
             }
         };
         Runnable swap = new Runnable() {

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/object/PlotArea.java

@@ -179,7 +179,7 @@ public abstract class PlotArea {
     }
 
     public Set<PlotCluster> getClusters() {
-        return this.clusters == null ? new HashSet<>() : this.clusters.getAll();
+        return this.clusters == null ? new HashSet<PlotCluster>() : this.clusters.getAll();
     }
 
     /**
@@ -496,7 +496,7 @@ public abstract class PlotArea {
         final HashSet<Plot> myPlots = new HashSet<>();
         foreachPlotAbs(new RunnableVal<Plot>() {
             @Override public void run(Plot value) {
-                if (uuid.equals(value.guessOwner())) {
+                if (uuid.equals(value.owner)) {
                     myPlots.add(value);
                 }
             }
@@ -657,7 +657,12 @@ public abstract class PlotArea {
 
     public Set<Plot> getBasePlots() {
         HashSet<Plot> myPlots = new HashSet<>(getPlots());
-        myPlots.removeIf(plot -> !plot.isBasePlot());
+        Iterator<Plot> iterator = myPlots.iterator();
+        while (iterator.hasNext()) {
+            if (!iterator.next().isBasePlot()) {
+                iterator.remove();
+            }
+        }
         return myPlots;
     }
 

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/object/PlotBlock.java

@@ -78,7 +78,7 @@ public abstract class PlotBlock implements ConfigurationSerializable {
 
     public static PlotBlock get(@NonNull final Object type) {
         if (blockRegistry == null) {
-            blockRegistry = PlotSquared.get().IMP.getBlockRegistry();
+            blockRegistry = PlotSquared.imp().getBlockRegistry();
             if (blockRegistry == null) {
                 throw new UnsupportedOperationException(
                     "The PlotSquared implementation has not registered a custom block registry."
@@ -99,7 +99,7 @@ public abstract class PlotBlock implements ConfigurationSerializable {
 
     public <T> T to(@NonNull final Class<T> clazz) {
         if (blockRegistry == null) {
-            blockRegistry = PlotSquared.get().IMP.getBlockRegistry();
+            blockRegistry = PlotSquared.imp().getBlockRegistry();
             if (blockRegistry == null) {
                 throw new UnsupportedOperationException(
                     "The PlotSquared implementation has not registered a custom block registry."

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/object/PlotHandler.java

@@ -5,7 +5,7 @@ import java.util.UUID;
 
 public class PlotHandler {
     public static boolean sameOwners(final Plot plot1, final Plot plot2) {
-        if (plot1.guessOwner() == null || plot2.guessOwner() == null) {
+        if (plot1.owner == null || plot2.owner == null) {
             return false;
         }
         final Set<UUID> owners = plot1.getOwners();

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/object/PlotMessage.java

@@ -5,8 +5,6 @@ import com.github.intellectualsites.plotsquared.plot.config.C;
 import com.github.intellectualsites.plotsquared.plot.object.chat.PlainChatManager;
 import com.github.intellectualsites.plotsquared.plot.util.ChatManager;
 
-import java.util.Arrays;
-
 public class PlotMessage {
 
     private Object builder;
@@ -16,8 +14,8 @@ public class PlotMessage {
             reset(ChatManager.manager);
         } catch (Throwable e) {
             PlotSquared.debug(
-                PlotSquared.imp().getPluginName() + " doesn't support fancy chat for " + Arrays
-                    .toString(PlotSquared.get().IMP.getServerVersion()));
+                PlotSquared.imp().getPluginName() + " doesn't support fancy chat for " + PlotSquared
+                    .get().IMP.getServerVersion());
             ChatManager.manager = new PlainChatManager();
             reset(ChatManager.manager);
         }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/object/PlotPlayer.java

@@ -222,6 +222,7 @@ public abstract class PlotPlayer implements CommandCaller, OfflinePlotPlayer {
             return getClusterCount(getLocation().getWorld());
         }
         final AtomicInteger count = new AtomicInteger(0);
+        final UUID uuid = getUUID();
         PlotSquared.get().foreachPlotArea(new RunnableVal<PlotArea>() {
             @Override public void run(PlotArea value) {
                 for (PlotCluster cluster : value.getClusters()) {
@@ -258,6 +259,7 @@ public abstract class PlotPlayer implements CommandCaller, OfflinePlotPlayer {
     }
 
     public int getClusterCount(String world) {
+        UUID uuid = getUUID();
         int count = 0;
         for (PlotArea area : PlotSquared.get().getPlotAreas(world)) {
             for (PlotCluster cluster : area.getClusters()) {
@@ -567,27 +569,31 @@ public abstract class PlotPlayer implements CommandCaller, OfflinePlotPlayer {
                                                 final Location loc =
                                                     new Location(plot.getWorldName(), x, y, z);
                                                 if (plot.isLoaded()) {
-                                                    TaskManager.runTask(() -> {
-                                                        if (getMeta("teleportOnLogin", true)) {
-                                                            teleport(loc);
-                                                            sendMessage(C.TELEPORTED_TO_PLOT.f()
-                                                                + " (quitLoc) (" + plotX + ","
-                                                                + plotZ + ")");
+                                                    TaskManager.runTask(new Runnable() {
+                                                        @Override public void run() {
+                                                            if (getMeta("teleportOnLogin", true)) {
+                                                                teleport(loc);
+                                                                sendMessage(C.TELEPORTED_TO_PLOT.f()
+                                                                    + " (quitLoc) (" + plotX + ","
+                                                                    + plotZ + ")");
+                                                            }
                                                         }
                                                     });
                                                 } else if (!PlotSquared.get()
                                                     .isMainThread(Thread.currentThread())) {
                                                     if (getMeta("teleportOnLogin", true)) {
                                                         if (plot.teleportPlayer(PlotPlayer.this)) {
-                                                            TaskManager.runTask(() -> {
-                                                                if (getMeta("teleportOnLogin",
-                                                                    true)) {
-                                                                    teleport(loc);
-                                                                    sendMessage(
-                                                                        C.TELEPORTED_TO_PLOT.f()
-                                                                            + " (quitLoc-unloaded) ("
-                                                                            + plotX + "," + plotZ
-                                                                            + ")");
+                                                            TaskManager.runTask(new Runnable() {
+                                                                @Override public void run() {
+                                                                    if (getMeta("teleportOnLogin",
+                                                                        true)) {
+                                                                        teleport(loc);
+                                                                        sendMessage(
+                                                                            C.TELEPORTED_TO_PLOT.f()
+                                                                                + " (quitLoc-unloaded) ("
+                                                                                + plotX + ","
+                                                                                + plotZ + ")");
+                                                                    }
                                                                 }
                                                             });
                                                         }
@@ -612,7 +618,9 @@ public abstract class PlotPlayer implements CommandCaller, OfflinePlotPlayer {
     }
 
     public void removePersistentMeta(String key) {
-        this.metaMap.remove(key);
+        if (this.metaMap.containsKey(key)) {
+            this.metaMap.remove(key);
+        }
         if (Settings.Enabled_Components.PERSISTENT_META) {
             DBFunc.removePersistentMeta(getUUID(), key);
         }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/object/PlotSettings.java

@@ -14,6 +14,12 @@ import java.util.*;
  */
 public class PlotSettings {
 
+    /**
+     * Merged plots.
+     *
+     * @deprecated Raw access
+     */
+    @Deprecated public boolean[] merged = new boolean[] {false, false, false, false};
     /**
      * Plot alias.
      *
@@ -26,24 +32,20 @@ public class PlotSettings {
      * @deprecated Raw access
      */
     @Deprecated public List<PlotComment> comments = null;
+
     /**
      * The ratings for a plot.
      *
      * @deprecated Raw access
      */
     @Deprecated public HashMap<UUID, Integer> ratings;
+
     /**
      * Flags.
      *
      * @deprecated Raw access
      */
     @Deprecated public HashMap<Flag<?>, Object> flags = new HashMap<>();
-    /**
-     * Merged plots.
-     *
-     * @deprecated Raw access
-     */
-    @Deprecated private boolean[] merged = new boolean[] {false, false, false, false};
     /**
      * Home Position.
      *

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/object/comment/CommentInbox.java

@@ -14,8 +14,10 @@ public abstract class CommentInbox {
 
     public boolean canRead(Plot plot, PlotPlayer player) {
         if (Permissions.hasPermission(player, "plots.inbox.read." + toString(), true)) {
-            return plot.isOwner(player.getUUID()) || Permissions
-                .hasPermission(player, "plots.inbox.read." + toString() + ".other", true);
+            if (plot.isOwner(player.getUUID()) || Permissions
+                .hasPermission(player, "plots.inbox.read." + toString() + ".other", true)) {
+                return true;
+            }
         }
         return false;
     }
@@ -31,8 +33,10 @@ public abstract class CommentInbox {
 
     public boolean canModify(Plot plot, PlotPlayer player) {
         if (Permissions.hasPermission(player, "plots.inbox.modify." + toString(), true)) {
-            return plot.isOwner(player.getUUID()) || Permissions
-                .hasPermission(player, "plots.inbox.modify." + toString() + ".other", true);
+            if (plot.isOwner(player.getUUID()) || Permissions
+                .hasPermission(player, "plots.inbox.modify." + toString() + ".other", true)) {
+                return true;
+            }
         }
         return false;
     }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/object/comment/InboxOwner.java

@@ -27,7 +27,7 @@ public class InboxOwner extends CommentInbox {
                         plot.getSettings().addComment(comment);
                     }
                 } else {
-                    plot.getSettings().setComments(new ArrayList<>());
+                    plot.getSettings().setComments(new ArrayList<PlotComment>());
                 }
                 TaskManager.runTask(whenDone);
             }
@@ -36,7 +36,7 @@ public class InboxOwner extends CommentInbox {
     }
 
     @Override public boolean addComment(Plot plot, PlotComment comment) {
-        if (plot.guessOwner() == null) {
+        if (plot.owner == null) {
             return false;
         }
         plot.getSettings().addComment(comment);

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/object/comment/InboxReport.java

@@ -20,7 +20,7 @@ public class InboxReport extends CommentInbox {
     }
 
     @Override public boolean addComment(Plot plot, PlotComment comment) {
-        if (plot.guessOwner() == null) {
+        if (plot.owner == null) {
             return false;
         }
         DBFunc.setComment(plot, comment);

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/object/worlds/DefaultPlotAreaManager.java

@@ -104,7 +104,7 @@ public class DefaultPlotAreaManager implements PlotAreaManager {
     }
 
     @Override public void removePlotArea(PlotArea area) {
-        ArrayList<PlotArea> globalAreas = new ArrayList<>(Arrays.asList(plotAreas));
+        ArrayList<PlotArea> globalAreas = new ArrayList<PlotArea>(Arrays.asList(plotAreas));
         globalAreas.remove(area);
         this.plotAreas = globalAreas.toArray(new PlotArea[globalAreas.size()]);
         if (globalAreas.isEmpty()) {

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/object/worlds/SinglePlotArea.java

@@ -111,8 +111,8 @@ public class SinglePlotArea extends GridPlotWorld {
             return p;
         }
         PlotSettings s = p.getSettings();
-        p = new SinglePlot(p.getId(), p.guessOwner(), p.getTrusted(), p.getMembers(), p.getDenied(),
-            s.alias, s.getPosition(), null, this, s.getMerged(), p.getTimestamp(), p.temp);
+        p = new SinglePlot(p.getId(), p.owner, p.getTrusted(), p.getMembers(), p.getDenied(),
+            s.alias, s.getPosition(), null, this, s.merged, p.getTimestamp(), p.temp);
         p.getSettings().flags = s.flags;
         return p;
     }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/object/worlds/SinglePlotAreaManager.java

@@ -35,7 +35,8 @@ public class SinglePlotAreaManager extends DefaultPlotAreaManager {
         if (chars.length == 1 && chars[0] == '*') {
             return true;
         }
-        for (char c : chars) {
+        for (int i = 0; i < chars.length; i++) {
+            char c = chars[i];
             switch (mode) {
                 case 0:
                     mode = 1;
@@ -61,6 +62,7 @@ public class SinglePlotAreaManager extends DefaultPlotAreaManager {
                     if ((c <= '/') || (c >= ':')) {
                         return false;
                     }
+                    continue;
             }
         }
         return true;

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/object/worlds/SinglePlotManager.java

@@ -30,10 +30,12 @@ public class SinglePlotManager extends PlotManager {
         SetupUtils.manager.unload(plot.getWorldName(), false);
         final File worldFolder =
             new File(PlotSquared.get().IMP.getWorldContainer(), plot.getWorldName());
-        TaskManager.IMP.taskAsync(() -> {
-            MainUtil.deleteDirectory(worldFolder);
-            if (whenDone != null)
-                whenDone.run();
+        TaskManager.IMP.taskAsync(new Runnable() {
+            @Override public void run() {
+                MainUtil.deleteDirectory(worldFolder);
+                if (whenDone != null)
+                    whenDone.run();
+            }
         });
         return true;
     }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/util/ChunkManager.java

@@ -71,39 +71,41 @@ public abstract class ChunkManager {
 
     public static void largeRegionTask(final String world, final RegionWrapper region,
         final RunnableVal<ChunkLoc> task, final Runnable whenDone) {
-        TaskManager.runTaskAsync(() -> {
-            HashSet<ChunkLoc> chunks = new HashSet<>();
-            Set<ChunkLoc> mcrs = manager.getChunkChunks(world);
-            for (ChunkLoc mcr : mcrs) {
-                int bx = mcr.x << 9;
-                int bz = mcr.z << 9;
-                int tx = bx + 511;
-                int tz = bz + 511;
-                if (bx <= region.maxX && tx >= region.minX && bz <= region.maxZ
-                    && tz >= region.minZ) {
-                    for (int x = bx >> 4; x <= (tx >> 4); x++) {
-                        int cbx = x << 4;
-                        int ctx = cbx + 15;
-                        if (cbx <= region.maxX && ctx >= region.minX) {
-                            for (int z = bz >> 4; z <= (tz >> 4); z++) {
-                                int cbz = z << 4;
-                                int ctz = cbz + 15;
-                                if (cbz <= region.maxZ && ctz >= region.minZ) {
-                                    chunks.add(new ChunkLoc(x, z));
+        TaskManager.runTaskAsync(new Runnable() {
+            @Override public void run() {
+                HashSet<ChunkLoc> chunks = new HashSet<>();
+                Set<ChunkLoc> mcrs = manager.getChunkChunks(world);
+                for (ChunkLoc mcr : mcrs) {
+                    int bx = mcr.x << 9;
+                    int bz = mcr.z << 9;
+                    int tx = bx + 511;
+                    int tz = bz + 511;
+                    if (bx <= region.maxX && tx >= region.minX && bz <= region.maxZ
+                        && tz >= region.minZ) {
+                        for (int x = bx >> 4; x <= (tx >> 4); x++) {
+                            int cbx = x << 4;
+                            int ctx = cbx + 15;
+                            if (cbx <= region.maxX && ctx >= region.minX) {
+                                for (int z = bz >> 4; z <= (tz >> 4); z++) {
+                                    int cbz = z << 4;
+                                    int ctz = cbz + 15;
+                                    if (cbz <= region.maxZ && ctz >= region.minZ) {
+                                        chunks.add(new ChunkLoc(x, z));
+                                    }
                                 }
                             }
                         }
                     }
                 }
-            }
-            TaskManager.objectTask(chunks, new RunnableVal<ChunkLoc>() {
+                TaskManager.objectTask(chunks, new RunnableVal<ChunkLoc>() {
 
-                @Override public void run(ChunkLoc value) {
-                    if (manager.loadChunk(world, value, false)) {
-                        task.run(value);
+                    @Override public void run(ChunkLoc value) {
+                        if (manager.loadChunk(world, value, false)) {
+                            task.run(value);
+                        }
                     }
-                }
-            }, whenDone);
+                }, whenDone);
+            }
         });
     }
 
@@ -237,18 +239,20 @@ public abstract class ChunkManager {
 
     public void deleteRegionFiles(final String world, final Collection<ChunkLoc> chunks,
         final Runnable whenDone) {
-        TaskManager.runTaskAsync(() -> {
-            for (ChunkLoc loc : chunks) {
-                String directory =
-                    world + File.separator + "region" + File.separator + "r." + loc.x + "." + loc.z
-                        + ".mca";
-                File file = new File(PlotSquared.get().IMP.getWorldContainer(), directory);
-                PlotSquared.log("&6 - Deleting file: " + file.getName() + " (max 1024 chunks)");
-                if (file.exists()) {
-                    file.delete();
+        TaskManager.runTaskAsync(new Runnable() {
+            @Override public void run() {
+                for (ChunkLoc loc : chunks) {
+                    String directory =
+                        world + File.separator + "region" + File.separator + "r." + loc.x + "."
+                            + loc.z + ".mca";
+                    File file = new File(PlotSquared.get().IMP.getWorldContainer(), directory);
+                    PlotSquared.log("&6 - Deleting file: " + file.getName() + " (max 1024 chunks)");
+                    if (file.exists()) {
+                        file.delete();
+                    }
                 }
+                TaskManager.runTask(whenDone);
             }
-            TaskManager.runTask(whenDone);
         });
     }
 

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/util/CmdConfirm.java

@@ -19,9 +19,11 @@ public class CmdConfirm {
         removePending(player);
         if (commandStr != null)
             MainUtil.sendMessage(player, C.REQUIRES_CONFIRM, commandStr);
-        TaskManager.runTaskLater(() -> {
-            CmdInstance cmd = new CmdInstance(runnable);
-            player.setMeta("cmdConfirm", cmd);
+        TaskManager.runTaskLater(new Runnable() {
+            @Override public void run() {
+                CmdInstance cmd = new CmdInstance(runnable);
+                player.setMeta("cmdConfirm", cmd);
+            }
         }, 1);
     }
 }

Core/src/main/java/com/github/intellectualsites/plotsquared/plot/util/CommentManager.java

@@ -20,31 +20,34 @@ public class CommentManager {
         if (!Settings.Enabled_Components.COMMENT_NOTIFIER || !plot.isOwner(player.getUUID())) {
             return;
         }
-        TaskManager.runTaskLaterAsync(() -> {
-            Collection<CommentInbox> boxes = CommentManager.inboxes.values();
-            final AtomicInteger count = new AtomicInteger(0);
-            final AtomicInteger size = new AtomicInteger(boxes.size());
-            for (final CommentInbox inbox : inboxes.values()) {
-                inbox.getComments(plot, new RunnableVal<List<PlotComment>>() {
-                    @Override public void run(List<PlotComment> value) {
-                        int total;
-                        if (value != null) {
-                            int num = 0;
-                            for (PlotComment comment : value) {
-                                if (comment.timestamp > getTimestamp(player, inbox.toString())) {
-                                    num++;
+        TaskManager.runTaskLaterAsync(new Runnable() {
+            @Override public void run() {
+                Collection<CommentInbox> boxes = CommentManager.inboxes.values();
+                final AtomicInteger count = new AtomicInteger(0);
+                final AtomicInteger size = new AtomicInteger(boxes.size());
+                for (final CommentInbox inbox : inboxes.values()) {
+                    inbox.getComments(plot, new RunnableVal<List<PlotComment>>() {
+                        @Override public void run(List<PlotComment> value) {
+                            int total;
+                            if (value != null) {
+                                int num = 0;
+                                for (PlotComment comment : value) {
+                                    if (comment.timestamp > getTimestamp(player,
+                                        inbox.toString())) {
+                                        num++;
+                                    }
                                 }
+                                total = count.addAndGet(num);
+                            } else {
+                                total = count.get();
+                            }
+                            if ((size.decrementAndGet() == 0) && (total > 0)) {
+                                AbstractTitle.sendTitle(player, "",
+                                    C.INBOX_NOTIFICATION.s().replaceAll("%s", "" + total));
                             }
-                            total = count.addAndGet(num);
-                        } else {
-                            total = count.get();
                         }
-                        if ((size.decrementAndGet() == 0) && (total > 0)) {
-                            AbstractTitle.sendTitle(player, "",
-                                C.INBOX_NOTIFICATION.s().replaceAll("%s", "" + total));
-                        }
-                    }
-                });
+                    });
+                }
             }
         }, 20);
     }