Small changes

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

@@ -699,7 +699,7 @@ public final class BukkitMain extends JavaPlugin implements Listener, IPlotMain
                 + " is using Offline Mode UUIDs either because of user preference, or because you are using an old version of "
                 + "Bukkit");
         } else {
-            PlotSquared.log(Captions.PREFIX + " &6" + getPluginName() + " is using online UUIDs");
+            PlotSquared.log(Captions.PREFIX + " " + getPluginName() + " is using online UUIDs");
         }
         if (Settings.UUID.USE_SQLUUIDHANDLER) {
             return new SQLUUIDHandler(wrapper);

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

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

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

@@ -6,8 +6,12 @@ import com.github.intellectualsites.plotsquared.plot.config.Captions;
 import com.github.intellectualsites.plotsquared.plot.object.Location;
 import com.github.intellectualsites.plotsquared.plot.object.PlotBlock;
 import com.github.intellectualsites.plotsquared.plot.object.PlotPlayer;
-import com.github.intellectualsites.plotsquared.plot.util.*;
-import com.google.common.base.Preconditions;
+import com.github.intellectualsites.plotsquared.plot.util.EconHandler;
+import com.github.intellectualsites.plotsquared.plot.util.MathMan;
+import com.github.intellectualsites.plotsquared.plot.util.PlotGameMode;
+import com.github.intellectualsites.plotsquared.plot.util.PlotWeather;
+import com.github.intellectualsites.plotsquared.plot.util.StringMan;
+import com.github.intellectualsites.plotsquared.plot.util.UUIDHandler;
 import io.papermc.lib.PaperLib;
 import org.bukkit.GameMode;
 import org.bukkit.Material;
@@ -41,14 +45,12 @@ public class BukkitPlayer extends PlotPlayer {
      *
      * @param player Bukkit player instance
      */
-    public BukkitPlayer(@Nonnull final Player player) {
-        Preconditions.checkNotNull(player, "Bukkit player instance cannot be null");
+    public BukkitPlayer(@NotNull final Player player) {
         this.player = player;
         super.populatePersistentMetaMap();
     }
 
-    public BukkitPlayer(@Nonnull final Player player, final boolean offline) {
-        Preconditions.checkNotNull(player, "Bukkit player instance cannot be null");
+    public BukkitPlayer(@NotNull final Player player, final boolean offline) {
         this.player = player;
         this.offline = offline;
         super.populatePersistentMetaMap();
@@ -70,8 +72,7 @@ public class BukkitPlayer extends PlotPlayer {
         return this.player.getLastPlayed();
     }
 
-    @Override public boolean canTeleport(@Nonnull final Location loc) {
-        Preconditions.checkNotNull(loc, "Bukkit location cannot be null");
+    @Override public boolean canTeleport(@NotNull final Location loc) {
         final org.bukkit.Location to = BukkitUtil.getLocation(loc);
         final org.bukkit.Location from = player.getLocation();
         PlayerTeleportEvent event = new PlayerTeleportEvent(player, from, to);
@@ -89,9 +90,7 @@ public class BukkitPlayer extends PlotPlayer {
         player.sendTitle(title, subtitle, fadeIn, stay, fadeOut);
     }
 
-    private void callEvent(final Event event) {
-        Preconditions.checkNotNull(event, "Event cannot be null");
-
+    private void callEvent(@NotNull final Event event) {
         final RegisteredListener[] listeners = event.getHandlers().getRegisteredListeners();
         for (final RegisteredListener listener : listeners) {
             if (listener.getPlugin().getName().equals(PlotSquared.imp().getPluginName())) {
@@ -215,8 +214,7 @@ public class BukkitPlayer extends PlotPlayer {
         return BukkitUtil.getLocationFull(this.player);
     }
 
-    @Override public void setWeather(@Nonnull final PlotWeather weather) {
-        Preconditions.checkNotNull(weather, "Specified weather cannot be null");
+    @Override public void setWeather(@NotNull final PlotWeather weather) {
         switch (weather) {
             case CLEAR:
                 this.player.setPlayerWeather(WeatherType.CLEAR);
@@ -246,8 +244,7 @@ public class BukkitPlayer extends PlotPlayer {
         }
     }
 
-    @Override public void setGameMode(@Nonnull final PlotGameMode gameMode) {
-        Preconditions.checkNotNull(gameMode, "Specified gamemode cannot be null");
+    @Override public void setGameMode(@NotNull final PlotGameMode gameMode) {
         switch (gameMode) {
             case ADVENTURE:
                 this.player.setGameMode(GameMode.ADVENTURE);
@@ -281,9 +278,7 @@ public class BukkitPlayer extends PlotPlayer {
         this.player.setAllowFlight(fly);
     }
 
-    @Override public void playMusic(@Nonnull final Location location, @Nonnull final PlotBlock id) {
-        Preconditions.checkNotNull(location, "Specified location cannot be null");
-        Preconditions.checkNotNull(id, "Specified block cannot be null");
+    @Override public void playMusic(@NotNull final Location location, @NotNull final PlotBlock id) {
         if (PlotBlock.isEverything(id) || id.isAir()) {
             // Let's just stop all the discs because why not?
             for (final Sound sound : Arrays.stream(Sound.values())

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

@@ -673,8 +673,7 @@ public class BukkitChunkManager extends ChunkManager {
         //todo optimize maxY
         void saveBlocks(BukkitWorld world, int maxY, int x, int z, int offsetX, int offsetZ) {
             maxY = Math.min(255, maxY);
-            BaseBlock[] ids;
-            ids = new BaseBlock[maxY + 1];
+            BaseBlock[] ids = new BaseBlock[maxY + 1];
             for (short y = 0; y <= maxY; y++) {
                 BaseBlock block = world.getFullBlock(BlockVector3.at(x, y, z));
                 ids[y] = block;

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

@@ -1,22 +1,11 @@
 package com.github.intellectualsites.plotsquared.bukkit.util;
 
-import com.github.intellectualsites.plotsquared.bukkit.BukkitMain;
 import com.github.intellectualsites.plotsquared.plot.PlotSquared;
 import com.github.intellectualsites.plotsquared.plot.object.LegacyPlotBlock;
 import com.github.intellectualsites.plotsquared.plot.object.PlotBlock;
 import com.github.intellectualsites.plotsquared.plot.object.StringPlotBlock;
 import com.github.intellectualsites.plotsquared.plot.util.LegacyMappings;
 import com.github.intellectualsites.plotsquared.plot.util.StringComparison;
-
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collection;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Locale;
-import java.util.Map;
-import java.util.stream.Collectors;
-
 import lombok.AccessLevel;
 import lombok.EqualsAndHashCode;
 import lombok.Getter;
@@ -26,6 +15,9 @@ import lombok.ToString;
 import org.bukkit.Bukkit;
 import org.bukkit.Material;
 
+import java.util.*;
+import java.util.stream.Collectors;
+
 /**
  * Borrowed from https://github.com/Phoenix616/IDConverter/blob/master/mappings/src/main/java/de/themoep/idconverter/IdMappings.java
  * Original License:
@@ -773,7 +765,7 @@ public final class BukkitLegacyMappings extends LegacyMappings {
         PlotBlock plotBlock;
         if (Material.matchMaterial(workingString) != null) {
             return PlotBlock.get(workingString);
-        } else if (NEW_STRING_TO_LEGACY_PLOT_BLOCK.keySet().contains(workingString.toLowerCase())) {
+        } else if (NEW_STRING_TO_LEGACY_PLOT_BLOCK.containsKey(workingString.toLowerCase())) {
             return PlotBlock.get(workingString);
         } else if ((plotBlock = fromLegacyToString(idDataPair)) != null) {
             return plotBlock;

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

@@ -5,14 +5,22 @@ import com.github.intellectualsites.plotsquared.plot.PlotSquared;
 import com.github.intellectualsites.plotsquared.plot.config.Captions;
 import com.github.intellectualsites.plotsquared.plot.object.*;
 import com.github.intellectualsites.plotsquared.plot.object.schematic.PlotItem;
-import com.github.intellectualsites.plotsquared.plot.util.*;
+import com.github.intellectualsites.plotsquared.plot.util.MainUtil;
+import com.github.intellectualsites.plotsquared.plot.util.MathMan;
+import com.github.intellectualsites.plotsquared.plot.util.StringComparison;
+import com.github.intellectualsites.plotsquared.plot.util.UUIDHandler;
+import com.github.intellectualsites.plotsquared.plot.util.WorldUtil;
 import com.sk89q.worldedit.bukkit.BukkitWorld;
 import lombok.NonNull;
 import org.bukkit.Bukkit;
 import org.bukkit.Material;
 import org.bukkit.OfflinePlayer;
 import org.bukkit.World;
-import org.bukkit.block.*;
+import org.bukkit.block.Biome;
+import org.bukkit.block.Block;
+import org.bukkit.block.BlockFace;
+import org.bukkit.block.BlockState;
+import org.bukkit.block.Sign;
 import org.bukkit.block.data.Directional;
 import org.bukkit.entity.Entity;
 import org.bukkit.entity.Player;
@@ -21,7 +29,12 @@ import org.bukkit.inventory.InventoryHolder;
 import org.bukkit.inventory.ItemStack;
 
 import javax.annotation.Nullable;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Locale;
+import java.util.Set;
 
 @SuppressWarnings({"unused", "WeakerAccess"}) public class BukkitUtil extends WorldUtil {
 
@@ -215,7 +228,11 @@ import java.util.*;
 
     public static List<Entity> getEntities(@NonNull final String worldName) {
         World world = getWorld(worldName);
-        return world != null ? world.getEntities() : new ArrayList<Entity>();
+        if (world != null) {
+            return world.getEntities();
+        } else {
+            return new ArrayList<>();
+        }
     }
 
     public static Location getLocation(@NonNull final Entity entity) {
@@ -270,7 +287,6 @@ import java.util.*;
         int air = 1;
         for (int y = bukkitWorld.getMaxHeight() - 1; y >= 0; y--) {
             Block block = bukkitWorld.getBlockAt(x, y, z);
-            if (block != null) {
             Material type = block.getType();
             if (type.isSolid()) {
                 if (air > 1) {
@@ -284,19 +300,16 @@ import java.util.*;
                 air++;
             }
         }
-        }
         return bukkitWorld.getMaxHeight() - 1;
     }
 
     @Override @Nullable public String[] getSign(@NonNull final Location location) {
         Block block = getWorld(location.getWorld())
             .getBlockAt(location.getX(), location.getY(), location.getZ());
-        if (block != null) {
         if (block.getState() instanceof Sign) {
             Sign sign = (Sign) block.getState();
             return sign.getLines();
         }
-        }
         return null;
     }
 
@@ -377,9 +390,6 @@ import java.util.*;
     public boolean addItems(@NonNull final String worldName, @NonNull final PlotItem items) {
         final World world = getWorld(worldName);
         final Block block = world.getBlockAt(items.x, items.y, items.z);
-        if (block == null) {
-            return false;
-        }
         final BlockState state = block.getState();
         if (state instanceof InventoryHolder) {
             InventoryHolder holder = (InventoryHolder) state;
@@ -457,9 +467,6 @@ import java.util.*;
     @Override public PlotBlock getBlock(@NonNull final Location location) {
         final World world = getWorld(location.getWorld());
         final Block block = world.getBlockAt(location.getX(), location.getY(), location.getZ());
-        if (block == null) {
-            return StringPlotBlock.EVERYTHING;
-        }
         return PlotBlock.get(block.getType().name());
     }
 

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

@@ -48,7 +48,7 @@ public class FileUUIDHandler extends UUIDHandlerImplementation {
             world = worlds.get(0).getName();
         }
         TaskManager.runTaskAsync(() -> {
-            PlotSquared.debug(Captions.PREFIX + "&6Starting player data caching for: " + world);
+            PlotSquared.debug(Captions.PREFIX + "Starting player data caching for: " + world);
             File uuidFile = new File(PlotSquared.get().IMP.getDirectory(), "uuids.txt");
             if (uuidFile.exists()) {
                 try {
@@ -83,7 +83,7 @@ public class FileUUIDHandler extends UUIDHandlerImplementation {
             HashBiMap<StringWrapper, UUID> toAdd = HashBiMap.create(new HashMap<>());
             if (Settings.UUID.NATIVE_UUID_PROVIDER) {
                 HashSet<UUID> all = UUIDHandler.getAllUUIDS();
-                PlotSquared.debug("&aFast mode UUID caching enabled!");
+                PlotSquared.debug("Fast mode UUID caching enabled!");
                 File playerDataFolder = new File(container, world + File.separator + "playerdata");
                 String[] dat = playerDataFolder.list(new DatFileFilter());
                 boolean check = all.isEmpty();

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

@@ -249,11 +249,11 @@ 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(Captions.CLICKABLE.s()).color("$2")
+                .command(baseCommand + " " + 2).text(Captions.CLICKABLE.s()).color("$2")
                 .send(player);
             return;
         }
-        if (page == totalPages && totalPages != 0) { // Back
+        if (totalPages != 0) { // Back
             new PlotMessage().text("<-").color("$1").command(baseCommand + " " + page).text(" | ")
                 .color("$3").text("->").color("$3").text(Captions.CLICKABLE.s()).color("$2")
                 .send(player);
@@ -387,7 +387,7 @@ public abstract class Command {
             String[] split = usage[i].split("\\|| |\\>|\\<|\\[|\\]|\\{|\\}|\\_|\\/");
             for (String aSplit : split) {
                 for (String arg : args) {
-                    if (StringMan.isEqualIgnoreCase(arg, aSplit)) {
+                    if (arg.equalsIgnoreCase(aSplit)) {
                         count += 5 - i + require;
                     }
                 }

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

@@ -62,7 +62,7 @@ public class Help extends Command {
 
             CommandCategory catEnum = null;
             if (cat != null) {
-                if (!StringMan.isEqualIgnoreCase(cat, "all")) {
+                if (!"all".equalsIgnoreCase(cat)) {
                     for (CommandCategory c : CommandCategory.values()) {
                         if (StringMan.isEqualIgnoreCaseToAny(cat, c.name(), c.toString())) {
                             catEnum = c;

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

@@ -16,7 +16,6 @@ import com.github.intellectualsites.plotsquared.plot.util.expiry.ExpireManager;
 
 import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.Iterator;
 import java.util.List;
 import java.util.Map.Entry;
 import java.util.Optional;
@@ -348,12 +347,7 @@ 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);
         }

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

@@ -13,7 +13,7 @@ public class FlatRandomCollection<T> extends RandomCollection<T> {
         super(weights, random);
         int max = 0;
         int[] counts = new int[weights.size()];
-        Double[] weightDoubles = weights.values().toArray(new Double[weights.size()]);
+        Double[] weightDoubles = weights.values().toArray(new Double[0]);
         for (int i = 0; i < weightDoubles.length; i++) {
             int weight = (int) (weightDoubles[i] * 100);
             counts[i] = weight;

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

@@ -500,7 +500,7 @@ public class MainUtil {
             }
             for (Plot p : plots) {
                 String name = p.getAlias();
-                if (!name.isEmpty() && StringMan.isEqualIgnoreCase(name, arg)) {
+                if (!name.isEmpty() && name.equalsIgnoreCase(arg)) {
                     return p;
                 }
             }

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

@@ -1,8 +1,15 @@
 package com.github.intellectualsites.plotsquared.plot.util;
 
+import org.jetbrains.annotations.NotNull;
+
 import java.lang.reflect.Array;
-import java.util.*;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Comparator;
+import java.util.Iterator;
+import java.util.Map;
 import java.util.Map.Entry;
+import java.util.Set;
 
 public class StringMan {
 
@@ -145,12 +152,7 @@ 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);
     }
 
@@ -186,8 +188,8 @@ public class StringMan {
             n = m;
             m = t.length();
         }
-        int p[] = new int[n + 1];
-        int d[] = new int[n + 1];
+        int[] p = new int[n + 1];
+        int[] d = new int[n + 1];
         int i;
         for (i = 0; i <= n; i++) {
             p[i] = i;
@@ -235,9 +237,9 @@ public class StringMan {
         return false;
     }
 
-    public static boolean isEqualIgnoreCaseToAny(String a, String... args) {
+    public static boolean isEqualIgnoreCaseToAny(@NotNull String a, String... args) {
         for (String arg : args) {
-            if (StringMan.isEqualIgnoreCase(a, arg)) {
+            if (a.equalsIgnoreCase(arg)) {
                 return true;
             }
         }

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

@@ -30,7 +30,6 @@ public abstract class UUIDHandlerImplementation {
     protected UUIDWrapper uuidWrapper;
     private boolean cached = false;
     private BiMap<StringWrapper, UUID> uuidMap = HashBiMap.create(new HashMap<>());
-    //    private BiMap<UUID, StringWrapper> nameMap = uuidMap.inverse();
 
     public UUIDHandlerImplementation(UUIDWrapper wrapper) {
         this.uuidWrapper = wrapper;