Cleanup

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

@@ -10,7 +10,10 @@ 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.*;
+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 java.io.IOException;
 import java.lang.annotation.Annotation;
@@ -47,7 +50,7 @@ public abstract class Command {
         this.perm = perm;
         this.required = required;
         this.category = cat;
-        this.aliases = Arrays.asList(id);
+        this.aliases = Collections.singletonList(id);
         if (this.parent != null) {
             this.parent.register(this);
         }
@@ -114,12 +117,7 @@ public abstract class Command {
     public List<Command> getCommands(CommandCategory cat, PlotPlayer player) {
         List<Command> commands = getCommands(player);
         if (cat != null) {
-            Iterator<Command> iterator = commands.iterator();
-            while (iterator.hasNext()) {
-                if (iterator.next().category != cat) {
-                    iterator.remove();
-                }
-            }
+            commands.removeIf(command -> command.category != cat);
         }
         return commands;
     }
@@ -249,8 +247,7 @@ public abstract class Command {
         }
         if (page == 0 && totalPages != 0) { // Next
             new PlotMessage().text("<-").color("$3").text(" | ").color("$3").text("->").color("$1")
-                .command(baseCommand + " " + (0 + 2)).text(C.CLICKABLE.s()).color("$2")
-                .send(player);
+                .command(baseCommand + " " + 2).text(C.CLICKABLE.s()).color("$2").send(player);
             return;
         }
         if (page == totalPages && totalPages != 0) { // Back
@@ -276,7 +273,7 @@ public abstract class Command {
             }
             return;
         }
-        if (this.allCommands == null || this.allCommands.isEmpty()) {
+        if (this.allCommands.isEmpty()) {
             player.sendMessage(
                 "Not Implemented: https://github.com/IntellectualSites/PlotSquared/issues/new");
             return;
@@ -289,13 +286,10 @@ public abstract class Command {
             }
             // Help command
             try {
-                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;
-                }
+                // 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
@@ -341,7 +335,6 @@ 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);
@@ -457,7 +450,6 @@ public abstract class Command {
     }
 
     public String getCommandString() {
-        String base;
         if (this.parent == null) {
             return "/" + toString();
         } else {
@@ -490,7 +482,7 @@ public abstract class Command {
             return null;
         }
         List<Command> result = new ArrayList<>();
-        int index = input.length - (space ? 0 : 1);
+        int index = input.length;
         for (String arg : args) {
             arg = arg.replace(getCommandString() + " ", "");
             String[] split = arg.split(" ");
@@ -519,7 +511,7 @@ public abstract class Command {
                         return null;
                     }
                 } else {
-                    Set<Command> commands = new HashSet<Command>();
+                    Set<Command> commands = new HashSet<>();
                     for (Map.Entry<String, Command> entry : this.staticCommands.entrySet()) {
                         if (entry.getKey().startsWith(arg) && entry.getValue()
                             .canExecute(player, false)) {
@@ -566,7 +558,7 @@ public abstract class Command {
         }
     }
 
-    public <T extends Object> T check(T object, C message, Object... args) {
+    public <T> 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 = (Map<?, ?>) yaml.load(contents);
+            input = 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 ignore) {
-            ignore.printStackTrace();
+        } catch (Exception e) {
+            e.printStackTrace();
             return new PlotVersion(0, 0, 0, 0, 0);
         }
     }

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

@@ -61,21 +61,19 @@ 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);
-        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);
-                            }
+        // Success
+        confirm.run(this, () -> {
+            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

@@ -98,42 +98,40 @@ import java.util.Set;
                                 object.type = area.TYPE;
                                 object.min = new PlotId(1, 1);
                                 object.max = new PlotId(numX, numZ);
-                                object.plotManager = PlotSquared.imp().getPluginName();
-                                object.setupGenerator = PlotSquared.imp().getPluginName();
+                                object.plotManager = PlotSquared.get().IMP.getPluginName();
+                                object.setupGenerator = PlotSquared.get().IMP.getPluginName();
                                 object.step = area.getSettingNodes();
                                 final String path =
                                     "worlds." + area.worldname + ".areas." + area.id + '-'
                                         + object.min + '-' + object.max;
-                                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);
+                                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);
                                         }
+                                    } else {
+                                        MainUtil.sendMessage(player,
+                                            "An error occurred while creating the world: "
+                                                + area.worldname);
                                     }
                                 };
                                 if (hasConfirmation(player)) {
@@ -228,32 +226,30 @@ import java.util.Set;
                                 C.SETUP_WORLD_TAKEN.send(player, pa.worldname);
                                 return false;
                             }
-                            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();
-                                    }
+                            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();
                                 }
                             };
                             if (hasConfirmation(player)) {
@@ -422,11 +418,7 @@ import java.util.Set;
                         @Override public void run(ChunkLoc value) {
                             AugmentedUtils.generate(area.worldname, value.x, value.z, null);
                         }
-                    }, new Runnable() {
-                        @Override public void run() {
-                            player.sendMessage("Regen complete");
-                        }
-                    });
+                    }, () -> player.sendMessage("Regen complete"));
                 return true;
             }
             case "goto":
@@ -464,7 +456,7 @@ 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.imp()
+                        + "\n$3 - $2Bukkit bukkit.yml" + "\n$3 - $2" + PlotSquared.get().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

@@ -16,10 +16,6 @@ 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)
@@ -128,12 +124,9 @@ public class Auto extends SubCommand {
             return;
         }
         whenDone.value = plot;
-        plot.owner = player.getUUID();
-        DBFunc.createPlotSafe(plot, whenDone, new Runnable() {
-            @Override public void run() {
-                autoClaimFromDatabase(player, area, plot.getId(), whenDone);
-            }
-        });
+        plot.setOwner(player.getUUID());
+        DBFunc.createPlotSafe(plot, whenDone,
+            () -> 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

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

@@ -46,27 +46,24 @@ import java.util.Set;
         final double price = flag.get();
         checkTrue(player.getMoney() >= price, C.CANNOT_AFFORD_PLOT);
         player.withdraw(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);
+        // 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);
             }
+            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

@@ -80,24 +80,16 @@ public class Claim extends SubCommand {
             sendMessage(player, C.REMOVED_GRANTED_PLOT, "1", "" + (grants - 1));
         }
         if (plot.canClaim(player)) {
-            plot.owner = player.getUUID();
+            plot.setOwner(player.getUUID());
             final String finalSchematic = schematic;
-            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);
-                            }
-                        }
-                    });
+            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);
+                    }
                 }
-            }, new Runnable() {
-                @Override public void run() {
-                    sendMessage(player, C.PLOT_NOT_CLAIMED);
-                }
-            });
+            }), () -> 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

@@ -35,33 +35,27 @@ 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, 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));
-                            }
-                        });
+        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);
                     }
+                    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.owner)) {
-                            cluster.invited.add(plot.owner);
-                            DBFunc.setInvited(cluster, plot.owner);
+                        if (!cluster.isAdded(plot.guessOwner())) {
+                            cluster.invited.add(plot.guessOwner());
+                            DBFunc.setInvited(cluster, plot.guessOwner());
                         }
                     }
                 }

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

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

@@ -30,25 +30,18 @@ import java.util.Map.Entry;
 
     public static void insertPlots(final SQLManager manager, final List<Plot> plots,
         final PlotPlayer player) {
-        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();
-                }
+        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();
             }
         });
     }
@@ -106,12 +99,12 @@ import java.util.Map.Entry;
                                             PlotId newId = newPlot.getId();
                                             PlotId id = plot.getId();
                                             File worldFile =
-                                                new File(PlotSquared.imp().getWorldContainer(),
+                                                new File(PlotSquared.get().IMP.getWorldContainer(),
                                                     id.toCommaSeparatedString());
                                             if (worldFile.exists()) {
-                                                File newFile =
-                                                    new File(PlotSquared.imp().getWorldContainer(),
-                                                        newId.toCommaSeparatedString());
+                                                File newFile = new File(
+                                                    PlotSquared.get().IMP.getWorldContainer(),
+                                                    newId.toCommaSeparatedString());
                                                 worldFile.renameTo(newFile);
                                             }
                                             id.x = newId.x;
@@ -130,20 +123,13 @@ import java.util.Map.Entry;
                                 plots.add(plot);
                             }
                         } else {
-                            HashMap<PlotId, Plot> plotmap =
-                                PlotSquared.get().plots_tmp.get(areaname);
-                            if (plotmap == null) {
-                                plotmap = new HashMap<>();
-                                PlotSquared.get().plots_tmp.put(areaname, plotmap);
-                            }
+                            HashMap<PlotId, Plot> plotmap = PlotSquared.get().plots_tmp
+                                .computeIfAbsent(areaname, k -> new HashMap<>());
                             plotmap.putAll(entry.getValue());
                         }
                     }
-                    DBFunc.createPlotsAndData(plots, new Runnable() {
-                        @Override public void run() {
-                            MainUtil.sendMessage(player, "&6Database conversion finished!");
-                        }
-                    });
+                    DBFunc.createPlotsAndData(plots,
+                        () -> 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

@@ -34,8 +34,6 @@ 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) {
@@ -96,11 +94,8 @@ public class DebugClaimTest extends SubCommand {
         if (!plots.isEmpty()) {
             MainUtil.sendMessage(player,
                 "&3Sign Block&8->&3Plot&8: &7Updating '" + plots.size() + "' plots!");
-            DBFunc.createPlotsAndData(plots, new Runnable() {
-                @Override public void run() {
-                    MainUtil.sendMessage(player, "&6Database update finished!");
-                }
-            });
+            DBFunc.createPlotsAndData(plots,
+                () -> 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 ignored) {
-            ignored.printStackTrace();
+        } catch (IOException | ScriptException e) {
+            e.printStackTrace();
         }
     }
 
@@ -164,11 +164,8 @@ import java.util.*;
                             "$1<threshold> $2= $1The percentage of plots you want to clear as a number between 0 - 100");
                         return false;
                     }
-                    PlotAnalysis.calcOptimalModifiers(new Runnable() {
-                        @Override public void run() {
-                            MainUtil.sendMessage(player, "$1Thank you for calibrating plot expiry");
-                        }
-                    }, threshold);
+                    PlotAnalysis.calcOptimalModifiers(() -> MainUtil
+                        .sendMessage(player, "$1Thank you for calibrating plot expiry"), threshold);
                     return true;
                 case "stop-expire":
                     if (ExpireManager.IMP == null || !ExpireManager.IMP.cancelTask()) {
@@ -404,18 +401,16 @@ import java.util.*;
             try {
                 if (async) {
                     final String toExec = script;
-                    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);
+                    TaskManager.runTaskAsync(() -> {
+                        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);
                     });
                 } 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.imp().getWorldContainer();
+        File container = PlotSquared.get().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 = Auto.getNextPlotId(id, 1);
+                    id = id.getNextId(1);
                 }
                 File newDir = new File(container, id.toCommaSeparatedString());
                 if (folder.renameTo(newDir)) {

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

@@ -19,69 +19,64 @@ import java.io.IOException;
     extends SubCommand {
 
     @Override public boolean onCommand(final PlotPlayer player, String[] args) {
-        TaskManager.runTaskAsync(new Runnable() {
-            @Override public void run() {
+        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;
                 try {
-                    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();
+                    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();
             }
         });
         return true;

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

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

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

@@ -33,33 +33,28 @@ 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 = 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);
+        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));
                     }
-                });
-                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

@@ -10,7 +10,6 @@ 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;
 
@@ -44,9 +43,7 @@ import java.util.UUID;
             MainUtil.sendMessage(player, C.INVALID_PLAYER, args[0]);
             return false;
         }
-        Iterator<UUID> iter = uuids.iterator();
-        while (iter.hasNext()) {
-            UUID uuid = iter.next();
+        for (UUID uuid : uuids) {
             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

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

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

@@ -57,9 +57,7 @@ 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")) {
-                catEnum = null;
-            } else {
+            if (!StringMan.isEqualIgnoreCase(cat, "all")) {
                 for (CommandCategory c : CommandCategory.values()) {
                     if (StringMan.isEqualIgnoreCaseToAny(cat, c.name(), c.toString())) {
                         catEnum = c;
@@ -76,13 +74,13 @@ public class Help extends Command {
             StringBuilder builder = new StringBuilder();
             builder.append(C.HELP_HEADER.s());
             for (CommandCategory c : CommandCategory.values()) {
-                builder.append("\n" + StringMan
+                builder.append("\n").append(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" + C.HELP_FOOTER.s());
+            builder.append("\n").append(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") + '\n');
+                page + 1, "%max", totalPages + 1, "%word", "all")).append('\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.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",
+            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",
                 "&cAmount: &6" + plot.getTrusted().size(),
                 "&8Click to view a list of the trusted users"));
-            inv.setItem(1, new PlotItemStack(388, (short) 0, 1, "&cMembers",
+            inv.setItem(1, new PlotItemStack("emerald", 1, "&cMembers",
                 "&cAmount: &6" + plot.getMembers().size(),
                 "&8Click to view a list of plot members"));
-            inv.setItem(1, new PlotItemStack(388, (short) 0, 1, "&cDenied", "&cDenied",
+            inv.setItem(1, new PlotItemStack("emerald", 1, "&cDenied", "&cDenied",
                 "&cAmount: &6" + plot.getDenied().size(),
                 "&8Click to view a list of denied players"));
-            inv.setItem(1, new PlotItemStack(388, (short) 0, 1, "&cFlags", "&cFlags",
+            inv.setItem(1, new PlotItemStack("emerald", 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

@@ -10,8 +10,11 @@ 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.*;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
 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,
@@ -132,7 +135,7 @@ public class ListCmd extends SubCommand {
                     return false;
                 }
                 plots = ExpireManager.IMP == null ?
-                    new ArrayList<Plot>() :
+                    new ArrayList<>() :
                     new ArrayList<>(ExpireManager.IMP.getPendingExpired());
                 break;
             case "area":
@@ -145,7 +148,7 @@ public class ListCmd extends SubCommand {
                         C.PERMISSION_LIST_WORLD_NAME.f(world));
                     return false;
                 }
-                plots = area == null ? new ArrayList<Plot>() : new ArrayList<>(area.getPlots());
+                plots = area == null ? new ArrayList<>() : new ArrayList<>(area.getPlots());
                 break;
             case "all":
                 if (!Permissions.hasPermission(player, C.PERMISSION_LIST_ALL)) {
@@ -167,18 +170,16 @@ public class ListCmd extends SubCommand {
                     }
                     plots.add(plot);
                 }
-                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;
+                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);
                         }
-                        return 1;
+                        return -1;
                     }
+                    return 1;
                 });
                 sort = false;
                 break;
@@ -188,33 +189,31 @@ public class ListCmd extends SubCommand {
                     return false;
                 }
                 plots = new ArrayList<>(PlotSquared.get().getPlots());
-                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;
+                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;
                         }
-                        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;
-                        }
-                        if (v2 == v1 && v2 != 0) {
-                            return p2s - p1s;
-                        }
-                        return (int) Math.signum(v2 - v1);
+                        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;
+                        }
+                        v2 /= p2s;
+                        v2 += p2s;
+                    }
+                    if (v2 == v1 && v2 != 0) {
+                        return p2s - p1s;
+                    }
+                    return (int) Math.signum(v2 - v1);
                 });
                 sort = false;
                 break;
@@ -241,7 +240,7 @@ public class ListCmd extends SubCommand {
                 }
                 plots = new ArrayList<>();
                 for (Plot plot : PlotSquared.get().getPlots()) {
-                    if (plot.owner == null) {
+                    if (plot.guessOwner() == null) {
                         plots.add(plot);
                     }
                 }
@@ -253,10 +252,10 @@ public class ListCmd extends SubCommand {
                 }
                 plots = new ArrayList<>();
                 for (Plot plot : PlotSquared.get().getPlots()) {
-                    if (plot.owner == null) {
+                    if (plot.guessOwner() == null) {
                         continue;
                     }
-                    if (UUIDHandler.getName(plot.owner) == null) {
+                    if (UUIDHandler.getName(plot.guessOwner()) == null) {
                         plots.add(plot);
                     }
                 }
@@ -330,12 +329,7 @@ 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
-        Iterator<Plot> iterator = plots.iterator();
-        while (iterator.hasNext()) {
-            if (!iterator.next().isBasePlot()) {
-                iterator.remove();
-            }
-        }
+        plots.removeIf(plot -> !plot.isBasePlot());
         if (sort) {
             plots = PlotSquared.get().sortPlots(plots, SortType.CREATION_DATE, area);
         }
@@ -343,7 +337,7 @@ public class ListCmd extends SubCommand {
             new RunnableVal3<Integer, Plot, PlotMessage>() {
                 @Override public void run(Integer i, Plot plot, PlotMessage message) {
                     String color;
-                    if (plot.owner == null) {
+                    if (plot.guessOwner() == null) {
                         color = "$3";
                     } else if (plot.isOwner(player.getUUID())) {
                         color = "$1";

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

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

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

@@ -127,27 +127,23 @@ 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(), 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;
+                        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();
                                         }
+                                        return;
                                     }
                                 }
-                                if (success != null) {
-                                    success.run();
-                                }
+                            }
+                            if (success != null) {
+                                success.run();
                             }
                         });
                         return;

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

@@ -55,12 +55,11 @@ public class Merge extends SubCommand {
                 MainUtil.sendMessage(player, C.NO_PLOT_PERMS);
                 return false;
             } else {
-                uuid = plot.owner;
+                uuid = plot.guessOwner();
             }
         }
         final PlotArea plotArea = plot.getArea();
-        Expression<Double> priceExr =
-            plotArea.PRICES.containsKey("merge") ? plotArea.PRICES.get("merge") : null;
+        Expression<Double> priceExr = plotArea.PRICES.getOrDefault("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
@@ -155,25 +154,23 @@ public class Merge extends SubCommand {
             }
             isOnline = true;
             final int dir = direction;
-            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);
+            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));
                         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));
-                            return;
-                        }
-                        EconHandler.manager.withdrawMoney(player, price);
-                        sendMessage(player, C.REMOVED_BALANCE, String.valueOf(price));
-                    }
-                    MainUtil.sendMessage(player, C.SUCCESS_MERGE);
+                    EconHandler.manager.withdrawMoney(player, price);
+                    sendMessage(player, C.REMOVED_BALANCE, String.valueOf(price));
                 }
+                MainUtil.sendMessage(player, C.SUCCESS_MERGE);
             };
             if (hasConfirmation(player)) {
                 CmdConfirm.addPending(accepter,

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

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

@@ -71,20 +71,17 @@ import java.util.UUID;
         final String finalName = name;
         final UUID finalUUID = uuid;
         final boolean removeDenied = plot.isDenied(finalUUID);
-        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);
-            }
+        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);
         };
         if (hasConfirmation(player)) {
             CmdConfirm.addPending(player, "/plot set owner " + value, run);

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

@@ -13,18 +13,16 @@ 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(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());
-            }
+        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());
         });
         return true;
     }

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

@@ -105,12 +105,10 @@ import java.util.UUID;
             if (added != null && !plot.isAdded(added)) {
                 continue;
             }
-            if (unknown && UUIDHandler.getName(plot.owner) != null) {
+            if (unknown && UUIDHandler.getName(plot.guessOwner()) != null) {
                 continue;
             }
-            for (Plot current : plot.getConnectedPlots()) {
-                toDelete.add(current);
-            }
+            toDelete.addAll(plot.getConnectedPlots());
         }
         if (PlotSquared.get().plots_tmp != null) {
             for (Entry<String, HashMap<PlotId, Plot>> entry : PlotSquared.get().plots_tmp
@@ -130,7 +128,7 @@ import java.util.UUID;
                     if (added != null && !plot.isAdded(added)) {
                         continue;
                     }
-                    if (unknown && UUIDHandler.getName(plot.owner) != null) {
+                    if (unknown && UUIDHandler.getName(plot.guessOwner()) != null) {
                         continue;
                     }
                     toDelete.add(plot);
@@ -143,23 +141,21 @@ import java.util.UUID;
         }
         String cmd =
             "/plot purge " + StringMan.join(args, " ") + " (" + toDelete.size() + " plots)";
-        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();
+        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);
                     }
+                    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

@@ -10,8 +10,11 @@ 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.*;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
 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,
@@ -22,25 +25,23 @@ import java.util.Map.Entry;
             switch (args[0].toLowerCase()) {
                 case "next": {
                     ArrayList<Plot> plots = new ArrayList<>(PlotSquared.get().getBasePlots());
-                    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();
-                                }
+                    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();
                             }
-                            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;
                         }
+                        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;
                     });
                     UUID uuid = player.getUUID();
                     for (Plot p : plots) {
@@ -123,25 +124,23 @@ import java.util.Map.Entry;
                             return true;
                         }
                     };
-                    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.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.openInventory();
                 }
             };
             if (plot.getSettings().ratings == null) {
                 if (!Settings.Enabled_Components.RATING_CACHE) {
-                    TaskManager.runTaskAsync(new Runnable() {
-                        @Override public void run() {
-                            plot.getSettings().ratings = DBFunc.getRatings(plot);
-                            run.run();
-                        }
+                    TaskManager.runTaskAsync(() -> {
+                        plot.getSettings().ratings = DBFunc.getRatings(plot);
+                        run.run();
                     });
                     return true;
                 }
@@ -167,26 +166,22 @@ import java.util.Map.Entry;
             return false;
         }
         final UUID uuid = player.getUUID();
-        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());
-                }
+        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());
             }
         };
         if (plot.getSettings().ratings == null) {
             if (!Settings.Enabled_Components.RATING_CACHE) {
-                TaskManager.runTaskAsync(new Runnable() {
-                    @Override public void run() {
-                        plot.getSettings().ratings = DBFunc.getRatings(plot);
-                        run.run();
-                    }
+                TaskManager.runTaskAsync(() -> {
+                    plot.getSettings().ratings = DBFunc.getRatings(plot);
+                    run.run();
                 });
                 return true;
             }

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

@@ -7,8 +7,6 @@ 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() {
@@ -23,17 +21,14 @@ import java.util.HashSet;
             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]);
             }
-        }, new Runnable() {
-            @Override public void run() {
-                plot.refreshChunks();
-                C.SET_BLOCK_ACTION_FINISHED.send(player);
-            }
+        }, () -> {
+            plot.refreshChunks();
+            C.SET_BLOCK_ACTION_FINISHED.send(player);
         }, 5);
     }
 }

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

@@ -189,7 +189,6 @@ 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

@@ -58,8 +58,6 @@ 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);
@@ -100,11 +98,7 @@ import java.util.HashSet;
                             current.setComponent(component, bucket);
                         }
                         MainUtil.sendMessage(player, C.GENERATING_COMPONENT);
-                        GlobalBlockQueue.IMP.addTask(new Runnable() {
-                            @Override public void run() {
-                                plot.removeRunning();
-                            }
-                        });
+                        GlobalBlockQueue.IMP.addTask(() -> plot.removeRunning());
                         return true;
                     }
                 }
@@ -114,8 +108,8 @@ import java.util.HashSet;
     }
 
     public boolean noArgs(PlotPlayer player) {
-        ArrayList<String> newValues = new ArrayList<>();
-        newValues.addAll(Arrays.asList("biome", "alias", "home", "flag"));
+        ArrayList<String> newValues =
+            new ArrayList<>(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.imp().getPluginName())) {
+            if (entry.getKey().equals(PlotSquared.get().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.imp().getPluginName(),
-                                "&2" + PlotSquared.imp().getPluginName()));
+                            .replaceAll(PlotSquared.get().IMP.getPluginName(),
+                                "&2" + PlotSquared.get().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.imp().getPluginName();
+                        object.plotManager = PlotSquared.get().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.imp().getPluginName() + ", however you may need to "
+                            + PlotSquared.get().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.imp().getPluginName())) {
+                if (entry.getKey().equals(PlotSquared.get().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

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

@@ -15,7 +15,10 @@ 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.*;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
 import java.util.Set;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipInputStream;
@@ -63,9 +66,6 @@ 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.imp().getPluginName());
+                String manager = worldConfig
+                    .getString("generator.plugin", PlotSquared.get().IMP.getPluginName());
                 String generator = worldConfig.getString("generator.init", manager);
                 int type = worldConfig.getInt("generator.type");
                 int terrain = worldConfig.getInt("generator.terrain");
@@ -161,11 +161,9 @@ import java.util.zip.ZipOutputStream;
                 setup.step = new ConfigurationNode[0];
                 setup.world = world;
                 SetupUtils.manager.setupWorld(setup);
-                GlobalBlockQueue.IMP.addTask(new Runnable() {
-                    @Override public void run() {
-                        MainUtil.sendMessage(player, "Done!");
-                        player.teleport(WorldUtil.IMP.getSpawn(world));
-                    }
+                GlobalBlockQueue.IMP.addTask(() -> {
+                    MainUtil.sendMessage(player, "Done!");
+                    player.teleport(WorldUtil.IMP.getSpawn(world));
                 });
                 return true;
             }
@@ -180,17 +178,15 @@ import java.util.zip.ZipOutputStream;
                     return false;
                 }
                 final PlotManager manager = area.getPlotManager();
-                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!");
+                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;
                     }
+                    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 ? false : area.PLOT_CHAT;
+        boolean chat = area != null && 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

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

@@ -39,14 +39,12 @@ import com.github.intellectualsites.plotsquared.plot.util.*;
         } else {
             createRoad = true;
         }
-        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);
+        Runnable runnable = () -> {
+            if (!plot.unlinkPlot(createRoad, createRoad)) {
+                MainUtil.sendMessage(player, "&cUnlink has been cancelled");
+                return;
             }
+            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

@@ -915,18 +915,16 @@ public enum C {
             return m;
         }
         Map<String, String> map = new LinkedHashMap<>();
-        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);
-                }
+        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);
             }
         }
         m = StringMan.replaceFromMap(m, map);

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

@@ -120,7 +120,8 @@ public class Config {
      * @param clazz
      * @return
      */
-    public static Map<String, Object> getFields(Class clazz) {
+    public static Map<String, Object> getFields(
+        Class<? extends Settings.Enabled_Components> clazz) {
         HashMap<String, Object> map = new HashMap<>();
         for (Field field : clazz.getFields()) {
             if (java.lang.reflect.Modifier.isStatic(field.getModifiers())) {
@@ -142,7 +143,8 @@ public class Config {
             }
             StringBuilder m = new StringBuilder();
             for (Object obj : listValue) {
-                m.append(System.lineSeparator() + spacing + "- " + toYamlString(obj, spacing));
+                m.append(System.lineSeparator()).append(spacing).append("- ")
+                    .append(toYamlString(obj, spacing));
             }
             return m.toString();
         }
@@ -176,7 +178,7 @@ public class Config {
                     if (value == null && field.getType() != ConfigBlock.class) {
                         setAccessible(field);
                         Class<?>[] classes = clazz.getDeclaredClasses();
-                        for (Class current : classes) {
+                        for (Class<? extends Object> 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, ClassNotFoundException {
+    @Override public Connection openConnection() throws SQLException {
         if (checkConnection()) {
             return this.connection;
         }
@@ -69,7 +69,7 @@ public class MySQL extends Database {
         return true;
     }
 
-    @Override public ResultSet querySQL(String query) throws SQLException, ClassNotFoundException {
+    @Override public ResultSet querySQL(String query) throws SQLException {
         if (checkConnection()) {
             openConnection();
         }
@@ -78,7 +78,7 @@ public class MySQL extends Database {
         }
     }
 
-    @Override public int updateSQL(String query) throws SQLException, ClassNotFoundException {
+    @Override public int updateSQL(String query) throws SQLException {
         if (checkConnection()) {
             openConnection();
         }

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

@@ -121,42 +121,40 @@ import java.util.concurrent.atomic.AtomicInteger;
         } catch (SQLException e) {
             e.printStackTrace();
         }
-        TaskManager.runTaskAsync(new Runnable() {
-            @Override public void run() {
-                long last = System.currentTimeMillis();
-                while (true) {
-                    if (SQLManager.this.closed) {
-                        break;
+        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();
                     }
-                    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();
-                                }
-                                Thread.sleep(50);
-                            } catch (InterruptedException e) {
-                                e.printStackTrace();
-                            }
-                        }
-                    } else {
+                    if (!sendBatch()) {
                         try {
-                            Thread.sleep(1000);
+                            if (!getNotifyTasks().isEmpty()) {
+                                for (Runnable task : getNotifyTasks()) {
+                                    TaskManager.runTask(task);
+                                }
+                                getNotifyTasks().clear();
+                            }
+                            Thread.sleep(50);
                         } catch (InterruptedException e) {
                             e.printStackTrace();
                         }
                     }
+                } else {
+                    try {
+                        Thread.sleep(1000);
+                    } catch (InterruptedException e) {
+                        e.printStackTrace();
+                    }
                 }
             }
         });
@@ -515,92 +513,74 @@ import java.util.concurrent.atomic.AtomicInteger;
     }
 
     @Override public void createPlotsAndData(final List<Plot> myList, final Runnable whenDone) {
-        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<>();
+        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<>();
 
-                                // 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));
-                                            }
-                                        }
+                        // 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));
                                     }
-                                }
-                                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();
-                                                                    }
-                                                                }
-                                                            });
-                                                    }
-                                                });
-                                            }
-                                        });
+                                    for (UUID uuid : plot.getMembers()) {
+                                        trusted.add(new UUIDPair(id, uuid));
+                                    }
+                                    for (UUID uuid : plot.getTrusted()) {
+                                        helpers.add(new UUIDPair(id, uuid));
                                     }
-                                });
-                            } 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();
+                        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();
                 }
             }
         });
@@ -676,7 +656,7 @@ 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.owner.toString());
+                    stmt.setString(i * 5 + 3, plot.guessOwner().toString());
                 } catch (SQLException ignored) {
                     stmt.setString(i * 5 + 3, everyone.toString());
                 }
@@ -690,7 +670,7 @@ 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.owner.toString());
+                    stmt.setString(i * 6 + 4, plot.guessOwner().toString());
                 } catch (SQLException ignored) {
                     stmt.setString(i * 6 + 4, everyone.toString());
                 }
@@ -701,7 +681,7 @@ 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.owner.toString());
+                stmt.setString(3, plot.guessOwner().toString());
                 stmt.setString(4, plot.getArea().toString());
                 stmt.setTimestamp(5, new Timestamp(plot.getTimestamp()));
 
@@ -929,11 +909,7 @@ import java.util.concurrent.atomic.AtomicInteger;
                 stmt.setInt(1, pair.id);
             }
         };
-        addGlobalTask(new Runnable() {
-            @Override public void run() {
-                setBulk(myList, mod, whenDone);
-            }
-        });
+        addGlobalTask(() -> setBulk(myList, mod, whenDone));
     }
 
     public void createEmptySettings(final ArrayList<Integer> myList, final Runnable whenDone) {
@@ -977,20 +953,15 @@ import java.util.concurrent.atomic.AtomicInteger;
                 stmt.setInt(1, id);
             }
         };
-        addGlobalTask(new Runnable() {
-            @Override public void run() {
-                setBulk(myList, mod, whenDone);
-            }
-        });
+        addGlobalTask(() -> 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.owner.toString());
+                stmt.setString(3, plot.guessOwner().toString());
                 stmt.setString(4, plot.getArea().toString());
                 stmt.setTimestamp(5, new Timestamp(plot.getTimestamp()));
                 stmt.setString(6, plot.getArea().toString());
@@ -1057,7 +1028,7 @@ 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.owner.toString());
+                stmt.setString(3, plot.guessOwner().toString());
                 stmt.setString(4, plot.getArea().toString());
                 stmt.setTimestamp(5, new Timestamp(plot.getTimestamp()));
             }
@@ -1351,7 +1322,7 @@ 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.owner + " Index: " + plot.temp);
+                + plot.guessOwner() + " Index: " + plot.temp);
         deleteSettings(plot);
         deleteDenied(plot);
         deleteHelpers(plot);
@@ -1379,7 +1350,7 @@ 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.owner + " Index: " + id);
+                + plot.guessOwner() + " Index: " + id);
         addPlotTask(plot, new UniqueStatement("createPlotSettings") {
             @Override public void set(PreparedStatement stmt) throws SQLException {
                 stmt.setInt(1, id);
@@ -1685,8 +1656,8 @@ import java.util.concurrent.atomic.AtomicInteger;
                                 time = System.currentTimeMillis() + id;
                             }
                         }
-                        Plot p = new Plot(plot_id, user, new HashSet<UUID>(), new HashSet<UUID>(),
-                            new HashSet<UUID>(), "", null, null, null,
+                        Plot p = new Plot(plot_id, user, new HashSet<>(), new HashSet<>(),
+                            new HashSet<>(), "", null, null, null,
                             new boolean[] {false, false, false, false}, time, id);
                         HashMap<PlotId, Plot> map = newPlots.get(areaid);
                         if (map != null) {
@@ -2036,103 +2007,96 @@ import java.util.concurrent.atomic.AtomicInteger;
      * Purge all plots with the following database IDs
      */
     @Override public void purgeIds(final Set<Integer> uniqueIds) {
-        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();
+        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;
                         }
-                    } catch (SQLException e) {
-                        e.printStackTrace();
-                        PlotSquared.debug("&c[ERROR] FAILED TO PURGE PLOTS!");
-                        return;
+                        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;
                 }
-                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(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"));
-                            }
+        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"));
                         }
                     }
-                    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);
             }
         });
     }
@@ -2523,11 +2487,7 @@ import java.util.concurrent.atomic.AtomicInteger;
                 }
 
                 resultSet.close();
-                TaskManager.runTaskAsync(new Runnable() {
-                    @Override public void run() {
-                        result.run(metaMap);
-                    }
-                });
+                TaskManager.runTaskAsync(() -> result.run(metaMap));
             }
 
         });
@@ -2591,11 +2551,8 @@ import java.util.concurrent.atomic.AtomicInteger;
                     }
                     cluster = new PlotCluster(null, pos1, pos2, user, id);
                     clusters.put(id, cluster);
-                    Set<PlotCluster> set = newClusters.get(areaid);
-                    if (set == null) {
-                        set = new HashSet<>();
-                        newClusters.put(areaid, set);
-                    }
+                    Set<PlotCluster> set =
+                        newClusters.computeIfAbsent(areaid, k -> new HashSet<>());
                     set.add(cluster);
                 }
                 //Getting helpers
@@ -2973,10 +2930,10 @@ import java.util.concurrent.atomic.AtomicInteger;
                 continue;
             }
             // owner
-            if (!plot.owner.equals(dataPlot.owner)) {
-                PlotSquared
-                    .debug("&8 - &7Setting owner: " + plot + " -> " + MainUtil.getName(plot.owner));
-                setOwner(plot, plot.owner);
+            if (!plot.guessOwner().equals(dataPlot.guessOwner())) {
+                PlotSquared.debug(
+                    "&8 - &7Setting owner: " + plot + " -> " + MainUtil.getName(plot.guessOwner()));
+                setOwner(plot, plot.guessOwner());
             }
             // trusted
             if (!plot.getTrusted().equals(dataPlot.getTrusted())) {
@@ -3069,87 +3026,83 @@ import java.util.concurrent.atomic.AtomicInteger;
     @Override
     public void replaceWorld(final String oldWorld, final String newWorld, final PlotId min,
         final PlotId max) {
-        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();
-                    }
+        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();
                 }
             }
         });
     }
 
     @Override public void replaceUUID(final UUID old, final UUID now) {
-        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();
-                }
+        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();
             }
         });
     }

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.owner == null) {
+        if (plot.guessOwner() == null) {
             return null;
         }
         return getSettingFlag(plot.getArea(), plot.getSettings(), flag);

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

@@ -244,7 +244,6 @@ 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

@@ -6,12 +6,10 @@ 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.imp().getPluginName();
+        return PlotSquared.get().IMP.getPluginName();
     }
 
     private void placeSchem(HybridPlotWorld world, ScopedLocalBlockQueue result, short relativeX,
@@ -41,8 +39,6 @@ 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;
@@ -86,7 +82,6 @@ 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

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

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

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

@@ -158,23 +158,21 @@ public class PlotListener {
             if (titles) {
                 if (!C.TITLE_ENTERED_PLOT.s().isEmpty() || !C.TITLE_ENTERED_PLOT_SUB.s()
                     .isEmpty()) {
-                    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);
-                            }
+                    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);
                         }
                     }, 20);
                 }

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

@@ -805,14 +805,12 @@ public class Plot {
         Runnable run = new Runnable() {
             @Override public void run() {
                 if (queue.isEmpty()) {
-                    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);
+                    Runnable run = () -> {
+                        for (RegionWrapper region : regions) {
+                            Location[] corners = region.getCorners(getWorldName());
+                            ChunkManager.manager.clearAllEntities(corners[0], corners[1]);
                         }
+                        TaskManager.runTask(whenDone);
                     };
                     for (Plot current : plots) {
                         if (isDelete || current.owner == null) {
@@ -927,11 +925,9 @@ public class Plot {
             current.setMerged(merged);
         }
         if (createSign) {
-            GlobalBlockQueue.IMP.addTask(new Runnable() {
-                @Override public void run() {
-                    for (Plot current : plots) {
-                        current.setSign(MainUtil.getName(current.owner));
-                    }
+            GlobalBlockQueue.IMP.addTask(() -> {
+                for (Plot current : plots) {
+                    current.setSign(MainUtil.getName(current.owner));
                 }
             });
         }
@@ -950,11 +946,7 @@ public class Plot {
         if (!isLoaded())
             return;
         if (!PlotSquared.get().isMainThread(Thread.currentThread())) {
-            TaskManager.runTask(new Runnable() {
-                @Override public void run() {
-                    Plot.this.setSign(name);
-                }
-            });
+            TaskManager.runTask(() -> Plot.this.setSign(name));
             return;
         }
         PlotManager manager = this.area.getPlotManager();
@@ -1044,13 +1036,11 @@ public class Plot {
             return false;
         }
         final Set<Plot> plots = this.getConnectedPlots();
-        this.clear(false, true, new Runnable() {
-            @Override public void run() {
-                for (Plot current : plots) {
-                    current.unclaim();
-                }
-                TaskManager.runTask(whenDone);
+        this.clear(false, true, () -> {
+            for (Plot current : plots) {
+                current.unclaim();
             }
+            TaskManager.runTask(whenDone);
         });
         return true;
     }
@@ -1483,12 +1473,10 @@ public class Plot {
         this.getDenied().clear();
         this.settings = new PlotSettings();
         if (this.area.addPlot(this)) {
-            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);
-                    }
+            DBFunc.createPlotAndSettings(this, () -> {
+                PlotArea plotworld = Plot.this.area;
+                if (notify && plotworld.AUTO_MERGE) {
+                    Plot.this.autoMerge(-1, Integer.MAX_VALUE, uuid, true);
                 }
             });
             return true;
@@ -1837,16 +1825,14 @@ public class Plot {
                         TaskManager.runTask(whenDone);
                     }
                 } else {
-                    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);
-                            }
+                    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);
                         }
                     });
                 }
@@ -2556,9 +2542,7 @@ public class Plot {
             }
             Location gtopabs = this.area.getPlotAbs(top).getTopAbs();
             Location gbotabs = this.area.getPlotAbs(bot).getBottomAbs();
-            for (PlotId id : MainUtil.getPlotSelectionIds(bot, top)) {
-                visited.add(id);
-            }
+            visited.addAll(MainUtil.getPlotSelectionIds(bot, top));
             for (int x = bot.x; x <= top.x; x++) {
                 Plot plot = this.area.getPlotAbs(new PlotId(x, top.y));
                 if (plot.getMerged(2)) {
@@ -2625,12 +2609,10 @@ public class Plot {
      * - Usually called when the plot state changes (unclaimed/claimed/flag change etc)
      */
     public void reEnter() {
-        TaskManager.runTaskLater(new Runnable() {
-            @Override public void run() {
-                for (PlotPlayer pp : Plot.this.getPlayersInPlot()) {
-                    PlotListener.plotExit(pp, Plot.this);
-                    PlotListener.plotEntry(pp, Plot.this);
-                }
+        TaskManager.runTaskLater(() -> {
+            for (PlotPlayer pp : Plot.this.getPlayersInPlot()) {
+                PlotListener.plotExit(pp, Plot.this);
+                PlotListener.plotEntry(pp, Plot.this);
             }
         }, 1);
     }
@@ -2686,17 +2668,15 @@ 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(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);
-                    }
+            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);
                 }
             }, Settings.Teleport.DELAY * 20);
             return true;
@@ -2883,11 +2863,8 @@ 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, new Runnable() {
-                    @Override public void run() {
-                        ChunkManager.manager.regenerateRegion(pos1, pos2, false, task);
-                    }
-                });
+                ChunkManager.manager.copyRegion(pos1, pos2, newPos,
+                    () -> 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<PlotCluster>() : this.clusters.getAll();
+        return this.clusters == null ? new HashSet<>() : 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.owner)) {
+                if (uuid.equals(value.guessOwner())) {
                     myPlots.add(value);
                 }
             }
@@ -657,12 +657,7 @@ public abstract class PlotArea {
 
     public Set<Plot> getBasePlots() {
         HashSet<Plot> myPlots = new HashSet<>(getPlots());
-        Iterator<Plot> iterator = myPlots.iterator();
-        while (iterator.hasNext()) {
-            if (!iterator.next().isBasePlot()) {
-                iterator.remove();
-            }
-        }
+        myPlots.removeIf(plot -> !plot.isBasePlot());
         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.imp().getBlockRegistry();
+            blockRegistry = PlotSquared.get().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.imp().getBlockRegistry();
+            blockRegistry = PlotSquared.get().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.owner == null || plot2.owner == null) {
+        if (plot1.guessOwner() == null || plot2.guessOwner() == null) {
             return false;
         }
         final Set<UUID> owners = plot1.getOwners();

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

@@ -5,6 +5,8 @@ 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;
@@ -14,8 +16,8 @@ public class PlotMessage {
             reset(ChatManager.manager);
         } catch (Throwable e) {
             PlotSquared.debug(
-                PlotSquared.imp().getPluginName() + " doesn't support fancy chat for " + PlotSquared
-                    .get().IMP.getServerVersion());
+                PlotSquared.imp().getPluginName() + " doesn't support fancy chat for " + Arrays
+                    .toString(PlotSquared.get().IMP.getServerVersion()));
             ChatManager.manager = new PlainChatManager();
             reset(ChatManager.manager);
         }

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

@@ -222,7 +222,6 @@ 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()) {
@@ -259,7 +258,6 @@ 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()) {
@@ -569,31 +567,27 @@ public abstract class PlotPlayer implements CommandCaller, OfflinePlotPlayer {
                                                 final Location loc =
                                                     new Location(plot.getWorldName(), x, y, z);
                                                 if (plot.isLoaded()) {
-                                                    TaskManager.runTask(new Runnable() {
-                                                        @Override public void run() {
-                                                            if (getMeta("teleportOnLogin", true)) {
-                                                                teleport(loc);
-                                                                sendMessage(C.TELEPORTED_TO_PLOT.f()
-                                                                    + " (quitLoc) (" + plotX + ","
-                                                                    + plotZ + ")");
-                                                            }
+                                                    TaskManager.runTask(() -> {
+                                                        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(new Runnable() {
-                                                                @Override public void run() {
-                                                                    if (getMeta("teleportOnLogin",
-                                                                        true)) {
-                                                                        teleport(loc);
-                                                                        sendMessage(
-                                                                            C.TELEPORTED_TO_PLOT.f()
-                                                                                + " (quitLoc-unloaded) ("
-                                                                                + plotX + ","
-                                                                                + plotZ + ")");
-                                                                    }
+                                                            TaskManager.runTask(() -> {
+                                                                if (getMeta("teleportOnLogin",
+                                                                    true)) {
+                                                                    teleport(loc);
+                                                                    sendMessage(
+                                                                        C.TELEPORTED_TO_PLOT.f()
+                                                                            + " (quitLoc-unloaded) ("
+                                                                            + plotX + "," + plotZ
+                                                                            + ")");
                                                                 }
                                                             });
                                                         }
@@ -618,9 +612,7 @@ public abstract class PlotPlayer implements CommandCaller, OfflinePlotPlayer {
     }
 
     public void removePersistentMeta(String key) {
-        if (this.metaMap.containsKey(key)) {
-            this.metaMap.remove(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

@@ -14,12 +14,6 @@ import java.util.*;
  */
 public class PlotSettings {
 
-    /**
-     * Merged plots.
-     *
-     * @deprecated Raw access
-     */
-    @Deprecated public boolean[] merged = new boolean[] {false, false, false, false};
     /**
      * Plot alias.
      *
@@ -32,20 +26,24 @@ 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

@@ -14,10 +14,8 @@ public abstract class CommentInbox {
 
     public boolean canRead(Plot plot, PlotPlayer player) {
         if (Permissions.hasPermission(player, "plots.inbox.read." + toString(), true)) {
-            if (plot.isOwner(player.getUUID()) || Permissions
-                .hasPermission(player, "plots.inbox.read." + toString() + ".other", true)) {
-                return true;
-            }
+            return plot.isOwner(player.getUUID()) || Permissions
+                .hasPermission(player, "plots.inbox.read." + toString() + ".other", true);
         }
         return false;
     }
@@ -33,10 +31,8 @@ public abstract class CommentInbox {
 
     public boolean canModify(Plot plot, PlotPlayer player) {
         if (Permissions.hasPermission(player, "plots.inbox.modify." + toString(), true)) {
-            if (plot.isOwner(player.getUUID()) || Permissions
-                .hasPermission(player, "plots.inbox.modify." + toString() + ".other", true)) {
-                return true;
-            }
+            return plot.isOwner(player.getUUID()) || Permissions
+                .hasPermission(player, "plots.inbox.modify." + toString() + ".other", 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<PlotComment>());
+                    plot.getSettings().setComments(new ArrayList<>());
                 }
                 TaskManager.runTask(whenDone);
             }
@@ -36,7 +36,7 @@ public class InboxOwner extends CommentInbox {
     }
 
     @Override public boolean addComment(Plot plot, PlotComment comment) {
-        if (plot.owner == null) {
+        if (plot.guessOwner() == 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.owner == null) {
+        if (plot.guessOwner() == 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<PlotArea>(Arrays.asList(plotAreas));
+        ArrayList<PlotArea> globalAreas = new ArrayList<>(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

@@ -113,8 +113,8 @@ public class SinglePlotArea extends GridPlotWorld {
             return p;
         }
         PlotSettings s = p.getSettings();
-        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 = 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.getSettings().flags = s.flags;
         return p;
     }

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

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

@@ -30,12 +30,10 @@ 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(new Runnable() {
-            @Override public void run() {
-                MainUtil.deleteDirectory(worldFolder);
-                if (whenDone != null)
-                    whenDone.run();
-            }
+        TaskManager.IMP.taskAsync(() -> {
+            MainUtil.deleteDirectory(worldFolder);
+            if (whenDone != null)
+                whenDone.run();
         });
         return true;
     }

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

@@ -71,41 +71,39 @@ public abstract class ChunkManager {
 
     public static void largeRegionTask(final String world, final RegionWrapper region,
         final RunnableVal<ChunkLoc> task, final Runnable whenDone) {
-        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.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.objectTask(chunks, new RunnableVal<ChunkLoc>() {
-
-                    @Override public void run(ChunkLoc value) {
-                        if (manager.loadChunk(world, value, false)) {
-                            task.run(value);
-                        }
-                    }
-                }, whenDone);
             }
+            TaskManager.objectTask(chunks, new RunnableVal<ChunkLoc>() {
+
+                @Override public void run(ChunkLoc value) {
+                    if (manager.loadChunk(world, value, false)) {
+                        task.run(value);
+                    }
+                }
+            }, whenDone);
         });
     }
 
@@ -239,20 +237,18 @@ public abstract class ChunkManager {
 
     public void deleteRegionFiles(final String world, final Collection<ChunkLoc> chunks,
         final Runnable whenDone) {
-        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.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.runTask(whenDone);
             }
+            TaskManager.runTask(whenDone);
         });
     }
 

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

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

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

@@ -20,34 +20,31 @@ public class CommentManager {
         if (!Settings.Enabled_Components.COMMENT_NOTIFIER || !plot.isOwner(player.getUUID())) {
             return;
         }
-        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++;
-                                    }
+        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++;
                                 }
-                                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);
     }

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

@@ -76,11 +76,7 @@ public abstract class EventUtil {
         }
         final Plot plot = player.getCurrentPlot();
         if (Settings.Teleport.ON_LOGIN && plot != null) {
-            TaskManager.runTask(new Runnable() {
-                @Override public void run() {
-                    plot.teleportPlayer(player);
-                }
-            });
+            TaskManager.runTask(() -> plot.teleportPlayer(player));
             MainUtil.sendMessage(player,
                 C.TELEPORTED_TO_ROAD.f() + " (on-login) " + "(" + plot.getId().x + ";" + plot
                     .getId().y + ")");
@@ -90,11 +86,7 @@ public abstract class EventUtil {
     public void doRespawnTask(final PlotPlayer player) {
         final Plot plot = player.getCurrentPlot();
         if (Settings.Teleport.ON_DEATH && plot != null) {
-            TaskManager.runTask(new Runnable() {
-                @Override public void run() {
-                    plot.teleportPlayer(player);
-                }
-            });
+            TaskManager.runTask(() -> plot.teleportPlayer(player));
             MainUtil.sendMessage(player, C.TELEPORTED_TO_ROAD);
         }
     }

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

@@ -51,7 +51,6 @@ public class HastebinUtility {
         List<String> lines = new ArrayList<>();
         try (BufferedReader reader = new BufferedReader(new FileReader(file))) {
             String line;
-            int i = 0;
             while ((line = reader.readLine()) != null) {
                 lines.add(line);
             }

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

@@ -124,20 +124,18 @@ public class MainUtil {
                     PrintWriter writer = new PrintWriter(
                         new OutputStreamWriter(output, StandardCharsets.UTF_8), true)) {
                     String CRLF = "\r\n";
-                    writer.append("--" + boundary).append(CRLF);
+                    writer.append("--").append(boundary).append(CRLF);
                     writer.append("Content-Disposition: form-data; name=\"param\"").append(CRLF);
-                    writer.append(
-                        "Content-Type: text/plain; charset=" + StandardCharsets.UTF_8.displayName())
-                        .append(CRLF);
+                    writer.append("Content-Type: text/plain; charset=")
+                        .append(StandardCharsets.UTF_8.displayName()).append(CRLF);
                     String param = "value";
                     writer.append(CRLF).append(param).append(CRLF).flush();
-                    writer.append("--" + boundary).append(CRLF);
+                    writer.append("--").append(boundary).append(CRLF);
                     writer.append(
-                        "Content-Disposition: form-data; name=\"schematicFile\"; filename=\""
-                            + filename + '"').append(CRLF);
-                    writer
-                        .append("Content-Type: " + URLConnection.guessContentTypeFromName(filename))
-                        .append(CRLF);
+                        "Content-Disposition: form-data; name=\"schematicFile\"; filename=\"")
+                        .append(filename).append(String.valueOf('"')).append(CRLF);
+                    writer.append("Content-Type: ")
+                        .append(URLConnection.guessContentTypeFromName(filename)).append(CRLF);
                     writer.append("Content-Transfer-Encoding: binary").append(CRLF);
                     writer.append(CRLF).flush();
                     writeTask.value = new AbstractDelegateOutputStream(output) {
@@ -147,7 +145,7 @@ public class MainUtil {
                     writeTask.run();
                     output.flush();
                     writer.append(CRLF).flush();
-                    writer.append("--" + boundary + "--").append(CRLF).flush();
+                    writer.append("--").append(boundary).append("--").append(CRLF).flush();
                 }
                 try (Reader response = new InputStreamReader(con.getInputStream(),
                     StandardCharsets.UTF_8)) {
@@ -203,30 +201,30 @@ public class MainUtil {
         if (time >= 33868800) {
             int years = (int) (time / 33868800);
             time -= years * 33868800;
-            toreturn.append(years + "y ");
+            toreturn.append(years).append("y ");
         }
         if (time >= 604800) {
             int weeks = (int) (time / 604800);
             time -= weeks * 604800;
-            toreturn.append(weeks + "w ");
+            toreturn.append(weeks).append("w ");
         }
         if (time >= 86400) {
             int days = (int) (time / 86400);
             time -= days * 86400;
-            toreturn.append(days + "d ");
+            toreturn.append(days).append("d ");
         }
         if (time >= 3600) {
             int hours = (int) (time / 3600);
             time -= hours * 3600;
-            toreturn.append(hours + "h ");
+            toreturn.append(hours).append("h ");
         }
         if (time >= 60) {
             int minutes = (int) (time / 60);
             time -= minutes * 60;
-            toreturn.append(minutes + "m ");
+            toreturn.append(minutes).append("m ");
         }
         if (toreturn.equals("") || time > 0) {
-            toreturn.append((time) + "s ");
+            toreturn.append(time).append("s ");
         }
         return toreturn.toString().trim();
     }
@@ -410,7 +408,7 @@ public class MainUtil {
 
         ArrayList<ArrayList<Plot>> plotList = new ArrayList<>(size);
         for (int i = 0; i < size; i++) {
-            plotList.add(new ArrayList<Plot>());
+            plotList.add(new ArrayList<>());
         }
 
         for (Plot plot : PlotSquared.get().getPlots()) {
@@ -429,7 +427,7 @@ public class MainUtil {
                     count++;
                 }
             }
-            if (area != null && plot.getArea().equals(area)) {
+            if (plot.getArea().equals(area)) {
                 count++;
             }
             if (alias != null && alias.equals(plot.getAlias())) {
@@ -621,14 +619,12 @@ public class MainUtil {
         if (caption.s().isEmpty()) {
             return true;
         }
-        TaskManager.runTaskAsync(new Runnable() {
-            @Override public void run() {
-                String m = C.format(caption, args);
-                if (player == null) {
-                    PlotSquared.log(m);
-                } else {
-                    player.sendMessage(m);
-                }
+        TaskManager.runTaskAsync(() -> {
+            String m = C.format(caption, args);
+            if (player == null) {
+                PlotSquared.log(m);
+            } else {
+                player.sendMessage(m);
             }
         });
         return true;
@@ -774,31 +770,28 @@ public class MainUtil {
         info = info.replace("%desc%", "No description set.");
         if (info.contains("%rating%")) {
             final String newInfo = info;
-            TaskManager.runTaskAsync(new Runnable() {
-                @Override public void run() {
-                    int max = 10;
-                    if (Settings.Ratings.CATEGORIES != null && !Settings.Ratings.CATEGORIES
-                        .isEmpty()) {
-                        max = 8;
-                    }
-                    String info;
-                    if (full && Settings.Ratings.CATEGORIES != null
-                        && Settings.Ratings.CATEGORIES.size() > 1) {
-                        double[] ratings = MainUtil.getAverageRatings(plot);
-                        String rating = "";
-                        String prefix = "";
-                        for (int i = 0; i < ratings.length; i++) {
-                            rating += prefix + Settings.Ratings.CATEGORIES.get(i) + '=' + String
-                                .format("%.1f", ratings[i]);
-                            prefix = ",";
-                        }
-                        info = newInfo.replaceAll("%rating%", rating);
-                    } else {
-                        info = newInfo.replaceAll("%rating%",
-                            String.format("%.1f", plot.getAverageRating()) + '/' + max);
-                    }
-                    whenDone.run(info);
+            TaskManager.runTaskAsync(() -> {
+                int max = 10;
+                if (Settings.Ratings.CATEGORIES != null && !Settings.Ratings.CATEGORIES.isEmpty()) {
+                    max = 8;
                 }
+                String info1;
+                if (full && Settings.Ratings.CATEGORIES != null
+                    && Settings.Ratings.CATEGORIES.size() > 1) {
+                    double[] ratings = MainUtil.getAverageRatings(plot);
+                    StringBuilder rating = new StringBuilder();
+                    String prefix = "";
+                    for (int i = 0; i < ratings.length; i++) {
+                        rating.append(prefix).append(Settings.Ratings.CATEGORIES.get(i)).append('=')
+                            .append(String.format("%.1f", ratings[i]));
+                        prefix = ",";
+                    }
+                    info1 = newInfo.replaceAll("%rating%", rating.toString());
+                } else {
+                    info1 = newInfo.replaceAll("%rating%",
+                        String.format("%.1f", plot.getAverageRating()) + '/' + max);
+                }
+                whenDone.run(info1);
             });
             return;
         }
@@ -809,10 +802,9 @@ public class MainUtil {
         if (directory.exists()) {
             File[] files = directory.listFiles();
             if (null != files) {
-                for (int i = 0; i < files.length; i++) {
-                    File file = files[i];
+                for (File file : files) {
                     if (file.isDirectory()) {
-                        deleteDirectory(files[i]);
+                        deleteDirectory(file);
                     } else {
                         PlotSquared.debug("Deleting file: " + file + " | " + file.delete());
                     }

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

@@ -75,7 +75,7 @@ public class Permissions {
         String[] nodes = permission.split("\\.");
         StringBuilder n = new StringBuilder();
         for (int i = 0; i <= (nodes.length - 1); i++) {
-            n.append(nodes[i] + ".");
+            n.append(nodes[i]).append(".");
             String combined = n + C.PERMISSION_STAR.s();
             if (!permission.equals(combined)) {
                 if (caller.hasPermission(combined)) {

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

@@ -87,7 +87,7 @@ public abstract class SchematicHandler {
                                 } else {
                                     MainUtil.sendMessage(null, "&7 - &a  success: " + plot.getId());
                                 }
-                                TaskManager.runTask(() -> THIS.run());
+                                TaskManager.runTask(THIS);
                             });
                         }
                     }

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

@@ -145,12 +145,7 @@ public class StringMan {
 
     public static String joinOrdered(Collection<?> collection, String delimiter) {
         Object[] array = collection.toArray();
-        Arrays.sort(array, new Comparator<Object>() {
-            @Override public int compare(Object a, Object b) {
-                return a.hashCode() - b.hashCode();
-            }
-
-        });
+        Arrays.sort(array, Comparator.comparingInt(Object::hashCode));
         return join(array, delimiter);
     }
 
@@ -245,13 +240,12 @@ public class StringMan {
     }
 
     public static boolean isEqual(String a, String b) {
-        return (a == b) || ((a != null) && (b != null) && (a.length() == b.length()) && (
-            a.hashCode() == b.hashCode()) && a.equals(b));
+        return a.equals(b) || b != null && a.length() == b.length() && a.hashCode() == b.hashCode()
+            && a.equals(b);
     }
 
     public static boolean isEqualIgnoreCase(String a, String b) {
-        return (a == b) || ((a != null) && (b != null) && (a.length() == b.length()) && a
-            .equalsIgnoreCase(b));
+        return a.equals(b) || b != null && a.length() == b.length() && a.equalsIgnoreCase(b);
     }
 
     public static String repeat(String s, int n) {

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

@@ -55,7 +55,7 @@ public class UUIDHandler {
         PlotSquared.get().foreachPlotRaw(new RunnableVal<Plot>() {
             @Override public void run(Plot plot) {
                 if (plot.hasOwner()) {
-                    uuids.add(plot.owner);
+                    uuids.add(plot.guessOwner());
                     uuids.addAll(plot.getTrusted());
                     uuids.addAll(plot.getMembers());
                     uuids.addAll(plot.getDenied());

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

@@ -19,8 +19,7 @@ public abstract class UUIDHandlerImplementation {
     public final HashSet<UUID> unknown = new HashSet<>();
     public UUIDWrapper uuidWrapper;
     private boolean cached = false;
-    private BiMap<StringWrapper, UUID> uuidMap =
-        HashBiMap.create(new HashMap<StringWrapper, UUID>());
+    private BiMap<StringWrapper, UUID> uuidMap = HashBiMap.create(new HashMap<>());
     //    private BiMap<UUID, StringWrapper> nameMap = uuidMap.inverse();
 
     public UUIDHandlerImplementation(UUIDWrapper wrapper) {
@@ -106,51 +105,47 @@ public abstract class UUIDHandlerImplementation {
          *   PlotMe conversion
          */
         if (!Settings.UUID.OFFLINE && !this.unknown.isEmpty()) {
-            TaskManager.runTaskAsync(new Runnable() {
-                @Override public void run() {
-                    UUID offline = UUID.nameUUIDFromBytes(
-                        ("OfflinePlayer:" + name.value).getBytes(Charsets.UTF_8));
-                    if (!UUIDHandlerImplementation.this.unknown.contains(offline) && !name.value
-                        .equals(name.value.toLowerCase())) {
-                        offline = UUID.nameUUIDFromBytes(
-                            ("OfflinePlayer:" + name.value.toLowerCase()).getBytes(Charsets.UTF_8));
-                        if (!UUIDHandlerImplementation.this.unknown.contains(offline)) {
-                            offline = null;
-                        }
+            TaskManager.runTaskAsync(() -> {
+                UUID offline = UUID.nameUUIDFromBytes(
+                    ("OfflinePlayer:" + name.value).getBytes(Charsets.UTF_8));
+                if (!UUIDHandlerImplementation.this.unknown.contains(offline) && !name.value
+                    .equals(name.value.toLowerCase())) {
+                    offline = UUID.nameUUIDFromBytes(
+                        ("OfflinePlayer:" + name.value.toLowerCase()).getBytes(Charsets.UTF_8));
+                    if (!UUIDHandlerImplementation.this.unknown.contains(offline)) {
+                        offline = null;
                     }
-                    if (offline != null && !offline.equals(uuid)) {
-                        UUIDHandlerImplementation.this.unknown.remove(offline);
-                        Set<Plot> plots = PlotSquared.get().getPlotsAbs(offline);
-                        if (!plots.isEmpty()) {
-                            for (Plot plot : plots) {
-                                plot.owner = uuid;
-                            }
-                            DBFunc.replaceUUID(offline, uuid);
-                            PlotSquared.debug("&cDetected invalid UUID stored for: " + name.value);
-                            PlotSquared.debug(
-                                "&7 - Did you recently switch to online-mode storage without running `uuidconvert`?");
-                            PlotSquared.debug("&6" + PlotSquared.imp().getPluginName()
-                                + " will update incorrect entries when the user logs in, or you can reconstruct your database.");
+                }
+                if (offline != null && !offline.equals(uuid)) {
+                    UUIDHandlerImplementation.this.unknown.remove(offline);
+                    Set<Plot> plots = PlotSquared.get().getPlotsAbs(offline);
+                    if (!plots.isEmpty()) {
+                        for (Plot plot : plots) {
+                            plot.setOwner(uuid);
                         }
+                        DBFunc.replaceUUID(offline, uuid);
+                        PlotSquared.debug("&cDetected invalid UUID stored for: " + name.value);
+                        PlotSquared.debug(
+                            "&7 - Did you recently switch to online-mode storage without running `uuidconvert`?");
+                        PlotSquared.debug("&6" + PlotSquared.get().IMP.getPluginName()
+                            + " will update incorrect entries when the user logs in, or you can reconstruct your database.");
                     }
                 }
             });
         } else if (Settings.UUID.FORCE_LOWERCASE && !this.unknown.isEmpty() && !name.value
             .equals(name.value.toLowerCase())) {
-            TaskManager.runTaskAsync(new Runnable() {
-                @Override public void run() {
-                    UUID offlineUpper = UUID.nameUUIDFromBytes(
-                        ("OfflinePlayer:" + name.value).getBytes(Charsets.UTF_8));
-                    if (UUIDHandlerImplementation.this.unknown.contains(offlineUpper)
-                        && offlineUpper != null && !offlineUpper.equals(uuid)) {
-                        UUIDHandlerImplementation.this.unknown.remove(offlineUpper);
-                        Set<Plot> plots = PlotSquared.get().getPlotsAbs(offlineUpper);
-                        if (!plots.isEmpty()) {
-                            for (Plot plot : plots) {
-                                plot.owner = uuid;
-                            }
-                            replace(offlineUpper, uuid, name.value);
+            TaskManager.runTaskAsync(() -> {
+                UUID offlineUpper = UUID.nameUUIDFromBytes(
+                    ("OfflinePlayer:" + name.value).getBytes(Charsets.UTF_8));
+                if (UUIDHandlerImplementation.this.unknown.contains(offlineUpper) && !offlineUpper
+                    .equals(uuid)) {
+                    UUIDHandlerImplementation.this.unknown.remove(offlineUpper);
+                    Set<Plot> plots = PlotSquared.get().getPlotsAbs(offlineUpper);
+                    if (!plots.isEmpty()) {
+                        for (Plot plot : plots) {
+                            plot.setOwner(uuid);
                         }
+                        replace(offlineUpper, uuid, name.value);
                     }
                 }
             });
@@ -162,7 +157,7 @@ public abstract class UUIDHandlerImplementation {
                     Set<Plot> plots = PlotSquared.get().getPlots(offline);
                     if (!plots.isEmpty()) {
                         for (Plot plot : plots) {
-                            plot.owner = uuid;
+                            plot.setOwner(uuid);
                         }
                         replace(offline, uuid, name.value);
                     }
@@ -199,7 +194,7 @@ public abstract class UUIDHandlerImplementation {
         PlotSquared.debug("&cDetected invalid UUID stored for: " + name);
         PlotSquared.debug(
             "&7 - Did you recently switch to online-mode storage without running `uuidconvert`?");
-        PlotSquared.debug("&6" + PlotSquared.imp().getPluginName()
+        PlotSquared.debug("&6" + PlotSquared.get().IMP.getPluginName()
             + " will update incorrect entries when the user logs in, or you can reconstruct your database.");
     }
 

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

@@ -81,52 +81,50 @@ public class GlobalBlockQueue {
             return false;
         }
         running.set(true);
-        TaskManager.runTaskRepeat(new Runnable() {
-            @Override public void run() {
-                if (inactiveQueues.isEmpty() && activeQueues.isEmpty()) {
-                    lastSuccess = System.currentTimeMillis();
-                    tasks();
-                    return;
-                }
-                SET_TASK.value1 = 50 + Math.min(
-                    (50 + GlobalBlockQueue.this.last) - (GlobalBlockQueue.this.last =
-                        System.currentTimeMillis()),
-                    GlobalBlockQueue.this.secondLast - System.currentTimeMillis());
-                SET_TASK.value2 = getNextQueue();
-                if (SET_TASK.value2 == null) {
-                    return;
-                }
-                if (!PlotSquared.get().isMainThread(Thread.currentThread())) {
-                    throw new IllegalStateException(
-                        "This shouldn't be possible for placement to occur off the main thread");
-                }
-                // Disable the async catcher as it can't discern async vs parallel
-                SET_TASK.value2.startSet(true);
-                try {
-                    if (PARALLEL_THREADS <= 1) {
-                        SET_TASK.run();
-                    } else {
-                        ArrayList<Thread> threads = new ArrayList<Thread>();
-                        for (int i = 0; i < PARALLEL_THREADS; i++) {
-                            threads.add(new Thread(SET_TASK));
-                        }
-                        for (Thread thread : threads) {
-                            thread.start();
-                        }
-                        for (Thread thread : threads) {
-                            try {
-                                thread.join();
-                            } catch (InterruptedException e) {
-                                e.printStackTrace();
-                            }
+        TaskManager.runTaskRepeat(() -> {
+            if (inactiveQueues.isEmpty() && activeQueues.isEmpty()) {
+                lastSuccess = System.currentTimeMillis();
+                tasks();
+                return;
+            }
+            SET_TASK.value1 = 50 + Math.min(
+                (50 + GlobalBlockQueue.this.last) - (GlobalBlockQueue.this.last =
+                    System.currentTimeMillis()),
+                GlobalBlockQueue.this.secondLast - System.currentTimeMillis());
+            SET_TASK.value2 = getNextQueue();
+            if (SET_TASK.value2 == null) {
+                return;
+            }
+            if (!PlotSquared.get().isMainThread(Thread.currentThread())) {
+                throw new IllegalStateException(
+                    "This shouldn't be possible for placement to occur off the main thread");
+            }
+            // Disable the async catcher as it can't discern async vs parallel
+            SET_TASK.value2.startSet(true);
+            try {
+                if (PARALLEL_THREADS <= 1) {
+                    SET_TASK.run();
+                } else {
+                    ArrayList<Thread> threads = new ArrayList<Thread>();
+                    for (int i = 0; i < PARALLEL_THREADS; i++) {
+                        threads.add(new Thread(SET_TASK));
+                    }
+                    for (Thread thread : threads) {
+                        thread.start();
+                    }
+                    for (Thread thread : threads) {
+                        try {
+                            thread.join();
+                        } catch (InterruptedException e) {
+                            e.printStackTrace();
                         }
                     }
-                } catch (Throwable e) {
-                    e.printStackTrace();
-                } finally {
-                    // Enable it again (note that we are still on the main thread)
-                    SET_TASK.value2.endSet(true);
                 }
+            } catch (Throwable e) {
+                e.printStackTrace();
+            } finally {
+                // Enable it again (note that we are still on the main thread)
+                SET_TASK.value2.endSet(true);
             }
         }, 1);
         return true;
@@ -168,7 +166,7 @@ public class GlobalBlockQueue {
 
     public List<LocalBlockQueue> getAllQueues() {
         ArrayList<LocalBlockQueue> list =
-            new ArrayList<LocalBlockQueue>(activeQueues.size() + inactiveQueues.size());
+            new ArrayList<>(activeQueues.size() + inactiveQueues.size());
         list.addAll(inactiveQueues);
         list.addAll(activeQueues);
         return list;
@@ -299,6 +297,6 @@ public class GlobalBlockQueue {
     }
 
     public enum QueueStage {
-        INACTIVE, ACTIVE, NONE;
+        INACTIVE, ACTIVE, NONE
     }
 }

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

@@ -77,7 +77,6 @@ public class ScopedLocalBlockQueue extends DelegateLocalBlockQueue {
         PlotArea area = PlotSquared.get().getPlotArea(getWorld(), null);
         Location loc = new Location(getWorld(), bx, 0, bz);
         if (area != null) {
-            PlotManager manager = area.getPlotManager();
             for (int x = 0; x < 16; x++) {
                 loc.setX(bx + x);
                 for (int z = 0; z < 16; z++) {

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

@@ -98,28 +98,26 @@ public class ExpireManager {
                 Iterator<Plot> iter = plotsToDelete.iterator();
                 final Plot current = iter.next();
                 if (!isExpired(new ArrayDeque<>(tasks), current).isEmpty()) {
-                    TaskManager.runTask(new Runnable() {
-                        @Override public void run() {
-                            pp.setMeta("ignoreExpireTask", true);
-                            pp.teleport(current.getCenter());
-                            pp.deleteMeta("ignoreExpireTask");
-                            PlotMessage msg = new PlotMessage().text(
-                                num + " " + (num > 1 ? "plots are" : "plot is") + " expired: ")
-                                .color("$1").text(current.toString()).color("$2")
-                                .suggest("/plot list expired").tooltip("/plot list expired")
-                                //.text("\n - ").color("$3").text("Delete all (/plot delete expired)").color("$2").command("/plot delete expired")
-                                .text("\n - ").color("$3").text("Delete this (/plot delete)")
-                                .color("$2").suggest("/plot delete").tooltip("/plot delete")
-                                .text("\n - ").color("$3").text("Remind later (/plot set keep 1d)")
-                                .color("$2").suggest("/plot set keep 1d")
-                                .tooltip("/plot set keep 1d").text("\n - ").color("$3")
-                                .text("Keep this (/plot set keep true)").color("$2")
-                                .suggest("/plot set keep true").tooltip("/plot set keep true")
-                                .text("\n - ").color("$3").text("Don't show me this").color("$2")
-                                .suggest("/plot toggle clear-confirmation")
-                                .tooltip("/plot toggle clear-confirmation");
-                            msg.send(pp);
-                        }
+                    TaskManager.runTask(() -> {
+                        pp.setMeta("ignoreExpireTask", true);
+                        pp.teleport(current.getCenter());
+                        pp.deleteMeta("ignoreExpireTask");
+                        PlotMessage msg = new PlotMessage()
+                            .text(num + " " + (num > 1 ? "plots are" : "plot is") + " expired: ")
+                            .color("$1").text(current.toString()).color("$2")
+                            .suggest("/plot list expired").tooltip("/plot list expired")
+                            //.text("\n - ").color("$3").text("Delete all (/plot delete expired)").color("$2").command("/plot delete expired")
+                            .text("\n - ").color("$3").text("Delete this (/plot delete)")
+                            .color("$2").suggest("/plot delete").tooltip("/plot delete")
+                            .text("\n - ").color("$3").text("Remind later (/plot set keep 1d)")
+                            .color("$2").suggest("/plot set keep 1d").tooltip("/plot set keep 1d")
+                            .text("\n - ").color("$3").text("Keep this (/plot set keep true)")
+                            .color("$2").suggest("/plot set keep true")
+                            .tooltip("/plot set keep true").text("\n - ").color("$3")
+                            .text("Don't show me this").color("$2")
+                            .suggest("/plot toggle clear-confirmation")
+                            .tooltip("/plot toggle clear-confirmation");
+                        msg.send(pp);
                     });
                     return;
                 } else {
@@ -220,12 +218,7 @@ public class ExpireManager {
 
     public ArrayDeque<ExpiryTask> getTasks(PlotArea area) {
         ArrayDeque<ExpiryTask> queue = new ArrayDeque<>(tasks);
-        Iterator<ExpiryTask> iter = queue.iterator();
-        while (iter.hasNext()) {
-            if (!iter.next().applies(area)) {
-                iter.remove();
-            }
-        }
+        queue.removeIf(expiryTask -> !expiryTask.applies(area));
         return queue;
     }
 
@@ -255,7 +248,7 @@ public class ExpireManager {
         }
         this.running = 2;
         final ConcurrentLinkedDeque<Plot> plots =
-            new ConcurrentLinkedDeque<Plot>(PlotSquared.get().getPlots());
+            new ConcurrentLinkedDeque<>(PlotSquared.get().getPlots());
         TaskManager.runTaskAsync(new Runnable() {
             @Override public void run() {
                 final Runnable task = this;
@@ -263,7 +256,6 @@ public class ExpireManager {
                     ExpireManager.this.running = 0;
                     return;
                 }
-                long start = System.currentTimeMillis();
                 while (!plots.isEmpty()) {
                     if (ExpireManager.this.running != 2) {
                         ExpireManager.this.running = 0;
@@ -279,11 +271,8 @@ public class ExpireManager {
                     }
                     for (ExpiryTask expiryTask : expired) {
                         if (!expiryTask.needsAnalysis()) {
-                            expiredTask.run(newPlot, new Runnable() {
-                                @Override public void run() {
-                                    TaskManager.IMP.taskLaterAsync(task, 1);
-                                }
-                            }, expiryTask.requiresConfirmation());
+                            expiredTask.run(newPlot, () -> TaskManager.IMP.taskLaterAsync(task, 1),
+                                expiryTask.requiresConfirmation());
                             return;
                         }
                     }
@@ -292,26 +281,19 @@ public class ExpireManager {
                             @Override public void run(final PlotAnalysis changed) {
                                 passesComplexity(changed, expired, new RunnableVal<Boolean>() {
                                     @Override public void run(Boolean confirmation) {
-                                        expiredTask.run(newPlot, new Runnable() {
-                                            @Override public void run() {
-                                                TaskManager.IMP.taskLaterAsync(task, 1);
-                                            }
-                                        }, confirmation);
-                                    }
-                                }, new Runnable() {
-                                    @Override public void run() {
-                                        FlagManager
-                                            .addPlotFlag(newPlot, Flags.ANALYSIS, changed.asList());
-                                        TaskManager.runTaskLaterAsync(task, 20);
+                                        expiredTask.run(newPlot,
+                                            () -> TaskManager.IMP.taskLaterAsync(task, 1),
+                                            confirmation);
                                     }
+                                }, () -> {
+                                    FlagManager
+                                        .addPlotFlag(newPlot, Flags.ANALYSIS, changed.asList());
+                                    TaskManager.runTaskLaterAsync(task, 20);
                                 });
                             }
                         };
-                    final Runnable doAnalysis = new Runnable() {
-                        @Override public void run() {
-                            HybridUtils.manager.analyzePlot(newPlot, handleAnalysis);
-                        }
-                    };
+                    final Runnable doAnalysis =
+                        () -> HybridUtils.manager.analyzePlot(newPlot, handleAnalysis);
 
                     PlotAnalysis analysis = newPlot.getComplexity(null);
                     if (analysis != null) {
@@ -319,11 +301,7 @@ public class ExpireManager {
                             @Override public void run(Boolean value) {
                                 doAnalysis.run();
                             }
-                        }, new Runnable() {
-                            @Override public void run() {
-                                TaskManager.IMP.taskLaterAsync(task, 1);
-                            }
-                        });
+                        }, () -> TaskManager.IMP.taskLaterAsync(task, 1));
                     } else {
                         doAnalysis.run();
                     }
@@ -331,12 +309,10 @@ public class ExpireManager {
                 }
                 if (plots.isEmpty()) {
                     ExpireManager.this.running = 3;
-                    TaskManager.runTaskLater(new Runnable() {
-                        @Override public void run() {
-                            if (ExpireManager.this.running == 3) {
-                                ExpireManager.this.running = 2;
-                                runTask(expiredTask);
-                            }
+                    TaskManager.runTaskLater(() -> {
+                        if (ExpireManager.this.running == 3) {
+                            ExpireManager.this.running = 2;
+                            runTask(expiredTask);
                         }
                     }, 86400000);
                 } else {
@@ -364,7 +340,7 @@ public class ExpireManager {
     }
 
     public HashSet<Plot> getPendingExpired() {
-        return plotsToDelete == null ? new HashSet<Plot>() : plotsToDelete;
+        return plotsToDelete == null ? new HashSet<>() : plotsToDelete;
     }
 
     public void deleteWithMessage(Plot plot, Runnable whenDone) {
@@ -389,12 +365,12 @@ public class ExpireManager {
         int changes = changed == null ? 0 : changed.changes_sd;
         int modified = changed == null ? 0 : changed.changes;
         PlotSquared.debug(
-            "$2[&5Expire&dManager$2] &cDeleted expired plot: " + plot + " User:" + plot.owner
+            "$2[&5Expire&dManager$2] &cDeleted expired plot: " + plot + " User:" + plot.guessOwner()
                 + " Delta:" + changes + "/" + modified + " Connected: " + StringMan
                 .getString(plots));
         PlotSquared.debug("$4 - Area: " + plot.getArea());
         if (plot.hasOwner()) {
-            PlotSquared.debug("$4 - Owner: " + UUIDHandler.getName(plot.owner));
+            PlotSquared.debug("$4 - Owner: " + UUIDHandler.getName(plot.guessOwner()));
         } else {
             PlotSquared.debug("$4 - Owner: Unowned");
         }
@@ -429,8 +405,8 @@ public class ExpireManager {
     }
 
     public long getAccountAge(Plot plot) {
-        if (!plot.hasOwner() || Objects.equals(DBFunc.EVERYONE, plot.owner)
-            || UUIDHandler.getPlayer(plot.owner) != null || plot.getRunning() > 0) {
+        if (!plot.hasOwner() || Objects.equals(DBFunc.EVERYONE, plot.guessOwner())
+            || UUIDHandler.getPlayer(plot.guessOwner()) != null || plot.getRunning() > 0) {
             return Long.MAX_VALUE;
         }
         long max = 0;
@@ -442,8 +418,8 @@ public class ExpireManager {
     }
 
     public long getAge(Plot plot) {
-        if (!plot.hasOwner() || Objects.equals(DBFunc.EVERYONE, plot.owner)
-            || UUIDHandler.getPlayer(plot.owner) != null || plot.getRunning() > 0) {
+        if (!plot.hasOwner() || Objects.equals(DBFunc.EVERYONE, plot.guessOwner())
+            || UUIDHandler.getPlayer(plot.guessOwner()) != null || plot.getRunning() > 0) {
             return 0;
         }
         Optional<?> keep = plot.getFlag(Flags.KEEP);

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

@@ -378,19 +378,19 @@ public class PlotAnalysis {
     }
 
     public static String log(Object obj) {
-        String result = "";
+        StringBuilder result = new StringBuilder();
         if (obj.getClass().isArray()) {
             String prefix = "";
 
             for (int i = 0; i < Array.getLength(obj); i++) {
-                result += prefix + log(Array.get(obj, i));
+                result.append(prefix).append(log(Array.get(obj, i)));
                 prefix = ",";
             }
             return "( " + result + " )";
         } else if (obj instanceof List<?>) {
             String prefix = "";
             for (Object element : (List<?>) obj) {
-                result += prefix + log(element);
+                result.append(prefix).append(log(element));
                 prefix = ",";
             }
             return "[ " + result + " ]";