Tidy code.

Bukkit/src/main/java/com/plotsquared/bukkit/chat/FancyMessage.java

@@ -704,7 +704,7 @@ public class FancyMessage implements JsonRepresentedObject, Cloneable, Iterable<
         try {
             writeJson(json);
             json.close();
-        } catch (IOException e) {
+        } catch (IOException ignored) {
             throw new RuntimeException("invalid message");
         }
         this.jsonString = string.toString();

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

@@ -284,7 +284,7 @@ public abstract class TextualComponent implements Cloneable {
         @Override
         @SuppressWarnings("serial")
         public Map<String, Object> serialize() {
-            return new java.util.HashMap<String, Object>() {
+            return new HashMap<String, Object>() {
                 {
                     put("key", getKey());
                     for (Map.Entry<String, String> valEntry : getValue().entrySet()) {

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

@@ -67,7 +67,7 @@ public class DebugUUID extends SubCommand {
                 try {
                     Class<?> clazz = Class.forName(args[0]);
                     newWrapper = (UUIDWrapper) clazz.newInstance();
-                } catch (ClassNotFoundException | IllegalAccessException | InstantiationException e) {
+                } catch (ClassNotFoundException | IllegalAccessException | InstantiationException ignored) {
                     MainUtil.sendMessage(player, C.COMMAND_SYNTAX, "/plot uuidconvert <lower|offline|online>");
                     return false;
                 }

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

@@ -94,9 +94,7 @@ public class LikePlotMeConverter {
             content = content.replaceAll("PlotMe-DefaultGenerator", "PlotSquared");
             content = content.replaceAll("PlotMe", "PlotSquared");
             Files.write(path, content.getBytes(StandardCharsets.UTF_8));
-        } catch (IOException ignored) {
+        } catch (IOException ignored) {}
-            //ignored
-        }
     }
 
     public boolean run(APlotMeConnector connector) {

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

@@ -41,9 +41,8 @@ public class PlotMeConnector_017 extends APlotMeConnector {
                 }
                 return new SQLite(dataFolder + File.separator + "plots.db").openConnection();
             }
-        } catch (SQLException | ClassNotFoundException ignored) {
+        } catch (SQLException | ClassNotFoundException e) {
-            //ignored
+            e.printStackTrace();
-            ignored.printStackTrace();
         }
         return null;
     }
@@ -116,7 +115,7 @@ public class PlotMeConnector_017 extends APlotMeConnector {
                         }
                     }
                     if (owner == null) {
-                        PS.log("&cCould not identify owner for plot: " + id + " -> '" + name + "'");
+                        PS.log("&cCould not identify owner for plot: " + id + " -> '" + name + '\'');
                         continue;
                     }
                 }

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

@@ -143,9 +143,7 @@ public class BukkitPlotGenerator extends ChunkGenerator implements GeneratorWrap
                     if (data != null) {
                         return;
                     }
-                } catch (Throwable e) {
+                } catch (Throwable ignored) {}
-                    //ignored
-                }
                 // Populator spillage
                 short[][] tmp = cg.generateExtBlockSections(w, r, result.getX(), result.getZ(), grid);
                 if (tmp != null) {

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

@@ -49,7 +49,7 @@ public class ChunkListener implements Listener {
                 RefClass classCraftChunk = getRefClass("{cb}.CraftChunk");
                 this.mustSave = classChunk.getField("mustSave");
                 this.methodGetHandleChunk = classCraftChunk.getMethod("getHandle");
-            } catch (Throwable e) {
+            } catch (Throwable ignored) {
                 PS.debug("PlotSquared/Server not compatible for chunk processor trim/gc");
                 Settings.CHUNK_PROCESSOR_GC = false;
                 Settings.CHUNK_PROCESSOR_TRIM_ON_SAVE = false;

Bukkit/src/main/java/com/plotsquared/bukkit/listeners/ForceFieldListener.java

@@ -36,10 +36,10 @@ public class ForceFieldListener implements Listener {
 
     private PlotPlayer hasNearbyPermitted(Player player, Plot plot) {
         for (Entity entity : player.getNearbyEntities(5d, 5d, 5d)) {
-            PlotPlayer pp;
             if (!(entity instanceof Player)) {
                 continue;
             }
+            PlotPlayer pp;
             if ((pp = BukkitUtil.getPlayer((Player) entity)) == null) {
                 continue;
             }

Bukkit/src/main/java/com/plotsquared/bukkit/titles/DefaultTitle.java

@@ -11,7 +11,7 @@ public class DefaultTitle extends AbstractTitle {
         try {
             DefaultTitleManager title = new DefaultTitleManager(head, sub, in, delay, out);
             title.send(((BukkitPlayer) player).player);
-        } catch (Throwable e) {
+        } catch (Exception ignored) {
             AbstractTitle.TITLE_CLASS = new DefaultTitle_183();
             AbstractTitle.TITLE_CLASS.sendTitle(player, head, sub, in, delay, out);
         }

Bukkit/src/main/java/com/plotsquared/bukkit/titles/DefaultTitle_183.java

@@ -11,7 +11,7 @@ public class DefaultTitle_183 extends AbstractTitle {
         try {
             DefaultTitleManager_183 title = new DefaultTitleManager_183(head, sub, in, delay, out);
             title.send(((BukkitPlayer) player).player);
-        } catch (Exception e) {
+        } catch (Exception ignored) {
             AbstractTitle.TITLE_CLASS = new HackTitle();
             AbstractTitle.TITLE_CLASS.sendTitle(player, head, sub, in, delay, out);
         }

Bukkit/src/main/java/com/plotsquared/bukkit/titles/DefaultTitle_19.java

@@ -19,7 +19,7 @@ public class DefaultTitle_19 extends AbstractTitle {
                     playerObj.sendTitle("", "");
                 }
             }, delay * 20);
-        } catch (Throwable e) {
+        } catch (Throwable ignored) {
             AbstractTitle.TITLE_CLASS = new DefaultTitle();
             AbstractTitle.TITLE_CLASS.sendTitle(player, head, sub, in, delay, out);
         }

Bukkit/src/main/java/com/plotsquared/bukkit/util/Metrics.java

@@ -255,8 +255,6 @@ public class Metrics {
 
     /**
      * Enables metrics for the server by setting "opt-out" to false in the config file and starting the metrics task.
-     *
-     * @throws java.io.IOException
      */
     public void enable() {
         // Enable Task, if it is not running
@@ -267,7 +265,6 @@ public class Metrics {
 
     /**
      * Disables metrics for the server by setting "opt-out" to true in the config file and canceling the metrics task.
-     *
      */
     public void disable() {
         // Disable Task, if it is running
@@ -499,7 +496,7 @@ public class Metrics {
         /**
          * Gets an <b>unmodifiable</b> set of the plotter objects in the graph
          *
-         * @return an unmodifiable {@link java.util.Set} of the plotter objects
+         * @return an unmodifiable {@link Set} of the plotter objects
          */
         public Set<Plotter> getPlotters() {
             return Collections.unmodifiableSet(this.plotters);

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

@@ -20,6 +20,7 @@ import java.io.DataInput;
 import java.io.DataInputStream;
 import java.io.DataOutput;
 import java.io.DataOutputStream;
+import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
@@ -160,7 +161,7 @@ public class NbtFactory {
     /**
      * Load the content of a file from a stream.
      *
-     * Use {@link Files#newInputStreamSupplier(java.io.File)} to provide a stream from a file.
+     * Use {@link Files#newInputStreamSupplier(File)} to provide a stream from a file.
      * @param stream - the stream supplier.
      * @param option - whether or not to decompress the input stream.
      * @return The decoded NBT compound.
@@ -195,7 +196,7 @@ public class NbtFactory {
     /**
      * Save the content of a NBT compound to a stream.
      *
-     * Use {@link Files#newOutputStreamSupplier(java.io.File)} to provide a stream supplier to a file.
+     * Use {@link Files#newOutputStreamSupplier(File)} to provide a stream supplier to a file.
      * @param source - the NBT compound to save.
      * @param stream - the stream.
      * @param option - whether or not to compress the output.
@@ -284,7 +285,7 @@ public class NbtFactory {
             Constructor<?> caller = INSTANCE.CRAFT_STACK.getDeclaredConstructor(ItemStack.class);
             caller.setAccessible(true);
             return (ItemStack) caller.newInstance(stack);
-        } catch (Exception e) {
+        } catch (Exception ignored) {
             throw new IllegalStateException("Unable to convert " + stack + " + to a CraftItemStack.");
         }
     }
@@ -396,9 +397,7 @@ public class NbtFactory {
         try {
             this.STREAM_TOOLS = loader.loadClass(nmsPackage + ".NBTCompressedStreamTools");
             this.READ_LIMITER_CLASS = loader.loadClass(nmsPackage + ".NBTReadLimiter");
-        } catch (ClassNotFoundException e) {
+        } catch (ClassNotFoundException ignored) {}
-            // Ignore - we will detect this later
-        }
     }
 
     private String getPackageName() {
@@ -435,12 +434,10 @@ public class NbtFactory {
 
         if (value instanceof Wrapper) {
             return ((Wrapper) value).getHandle();
-
         } else if (value instanceof List) {
             throw new IllegalArgumentException("Can only insert a WrappedList.");
         } else if (value instanceof Map) {
             throw new IllegalArgumentException("Can only insert a WrappedCompound.");
-
         } else {
             return createNbtTag(getPrimitiveType(value), value);
         }
@@ -652,7 +649,7 @@ public class NbtFactory {
      * All changes to this map will be reflected in the underlying NBT compound. Values may only be one of the following:
      * <ul>
      *   <li>Primitive types</li>
-     *   <li>{@link java.lang.String String}</li>
+     *   <li>{@link String String}</li>
      *   <li>{@link NbtList}</li>
      *   <li>{@link NbtCompound}</li>
      * </ul>
@@ -773,7 +770,7 @@ public class NbtFactory {
         /**
          * Save the content of a NBT compound to a stream.
          * <p>
-         * Use {@link Files#newOutputStreamSupplier(java.io.File)} to provide a stream supplier to a file.
+         * Use {@link Files#newOutputStreamSupplier(File)} to provide a stream supplier to a file.
          * @param stream - the output stream.
          * @param option - whether or not to compress the output.
          * @throws IOException If anything went wrong.

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

@@ -51,7 +51,6 @@ public class SendChunk {
         this.methodInitLighting = classChunk.getMethod("initLighting");
         RefClass classMapChunk = getRefClass("{nms}.PacketPlayOutMapChunk");
         //TODO in 1.7.10 this is PacketPlayOutMapChunk(Chunk chunk, boolean flag, int i, int version)
-        this.mapChunk = classMapChunk.getConstructor(classChunk.getRealClass(), boolean.class, int.class);
         if (PS.get().checkVersion(PS.get().IMP.getServerVersion(), 1, 9, 4)) {
             this.mapChunk = classMapChunk.getConstructor(classChunk.getRealClass(),int.class);
         } else {
@@ -65,7 +64,7 @@ public class SendChunk {
     }
 
     public void sendChunk(Collection<Chunk> input) {
-        HashSet<Chunk> chunks = new HashSet<Chunk>(input);
+        HashSet<Chunk> chunks = new HashSet<>(input);
         HashMap<String, ArrayList<Chunk>> map = new HashMap<>();
         int view = Bukkit.getServer().getViewDistance();
         for (Chunk chunk : chunks) {
@@ -126,9 +125,9 @@ public class SendChunk {
                 public void run() {
                     try {
                         chunk.unload(true, false);
-                    } catch (Throwable e) {
+                    } catch (Throwable ignored) {
                         String worldName = chunk.getWorld().getName();
-                        PS.debug("$4Could not save chunk: " + worldName + ";" + chunk.getX() + ";" + chunk.getZ());
+                        PS.debug("$4Could not save chunk: " + worldName + ';' + chunk.getX() + ";" + chunk.getZ());
                         PS.debug("$3 - $4File may be open in another process (e.g. MCEdit)");
                         PS.debug("$3 - $4" + worldName + "/level.dat or " + worldName
                                 + "/level_old.dat may be corrupt (try repairing or removing these)");

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

@@ -50,7 +50,7 @@ public class SQLUUIDHandler extends UUIDHandlerImplementation {
 
         try (PreparedStatement stmt = getConnection().prepareStatement(
                 "CREATE TABLE IF NOT EXISTS `usercache` (uuid VARCHAR(32) NOT NULL, username VARCHAR(32) NOT NULL, PRIMARY KEY (uuid, username)"
-                        + ")")) {
+                        + ')')) {
             stmt.execute();
         } catch (SQLException e) {
             e.printStackTrace();
@@ -176,7 +176,7 @@ public class SQLUUIDHandler extends UUIDHandlerImplementation {
                     String id = (String) jsonProfile.get("id");
                     String name = (String) jsonProfile.get("name");
                     ifFetch.value = UUID.fromString(
-                            id.substring(0, 8) + "-" + id.substring(8, 12) + "-" + id.substring(12, 16) + "-" + id.substring(16, 20) + "-" + id
+                            id.substring(0, 8) + '-' + id.substring(8, 12) + '-' + id.substring(12, 16) + '-' + id.substring(16, 20) + '-' + id
                                     .substring(20, 32));
                 } catch (IOException | ParseException e) {
                     e.printStackTrace();
@@ -231,7 +231,7 @@ public class SQLUUIDHandler extends UUIDHandlerImplementation {
                     statement.setString(1, name.value);
                     statement.setString(2, uuid.toString());
                     statement.execute();
-                    PS.debug(C.PREFIX + "Name change for '" + uuid + "' to '" + name.value + "'");
+                    PS.debug(C.PREFIX + "Name change for '" + uuid + "' to '" + name.value + '\'');
                 } catch (SQLException e) {
                     e.printStackTrace();
                 }

Core/src/main/java/com/intellectualcrafters/configuration/ConfigurationOptions.java

@@ -57,9 +57,9 @@ class ConfigurationOptions {
      * If this is true, all values in the default Configuration will be
      * directly copied, making it impossible to distinguish between values
      * that were set and values that are provided by default. As a result,
-     * {@link ConfigurationSection#contains(java.lang.String)} will always
+     * {@link ConfigurationSection#contains(String)} will always
      * return the same value as {@link
-     * ConfigurationSection#isSet(java.lang.String)}. The default value is
+     * ConfigurationSection#isSet(String)}. The default value is
      * false.
      *
      * @return Whether or not defaults are directly copied
@@ -75,9 +75,9 @@ class ConfigurationOptions {
      * If this is true, all values in the default Configuration will be
      * directly copied, making it impossible to distinguish between values
      * that were set and values that are provided by default. As a result,
-     * {@link ConfigurationSection#contains(java.lang.String)} will always
+     * {@link ConfigurationSection#contains(String)} will always
      * return the same value as {@link
-     * ConfigurationSection#isSet(java.lang.String)}. The default value is
+     * ConfigurationSection#isSet(String)}. The default value is
      * false.
      *
      * @param value Whether or not defaults are directly copied

Core/src/main/java/com/intellectualcrafters/configuration/file/FileConfigurationOptions.java

@@ -1,5 +1,6 @@
 package com.intellectualcrafters.configuration.file;
 
+import com.intellectualcrafters.configuration.Configuration;
 import com.intellectualcrafters.configuration.MemoryConfiguration;
 import com.intellectualcrafters.configuration.MemoryConfigurationOptions;
 
@@ -75,7 +76,7 @@ public class FileConfigurationOptions extends MemoryConfigurationOptions {
      * <p>
      * If this is true, if a default {@link FileConfiguration} is passed to
      * {@link
-     * FileConfiguration#setDefaults(com.intellectualcrafters.configuration.Configuration)}
+     * FileConfiguration#setDefaults(Configuration)}
      * then upon saving it will use the header from that config, instead of
      * the one provided here.
      * <p>
@@ -97,7 +98,7 @@ public class FileConfigurationOptions extends MemoryConfigurationOptions {
      * <p>
      * If this is true, if a default {@link FileConfiguration} is passed to
      * {@link
-     * FileConfiguration#setDefaults(com.intellectualcrafters.configuration.Configuration)}
+     * FileConfiguration#setDefaults(Configuration)}
      * then upon saving it will use the header from that config, instead of
      * the one provided here.
      * <p>

Core/src/main/java/com/intellectualcrafters/jnbt/ListTag.java

@@ -75,7 +75,7 @@ public final class ListTag extends Tag {
     public Tag getIfExists(int index) {
         try {
             return this.value.get(index);
-        } catch (NoSuchElementException e) {
+        } catch (NoSuchElementException ignored) {
             return null;
         }
     }

Core/src/main/java/com/intellectualcrafters/jnbt/NBTInputStream.java

@@ -181,7 +181,7 @@ public final class NBTInputStream implements Closeable {
                 }
                 return new IntArrayTag(name, data);
             default:
-                throw new IOException("Invalid tag type: " + type + ".");
+                throw new IOException("Invalid tag type: " + type + '.');
         }
     }
 

Core/src/main/java/com/intellectualcrafters/jnbt/NBTOutputStream.java

@@ -100,7 +100,7 @@ public final class NBTOutputStream implements Closeable {
                 writeIntArrayTagPayload((IntArrayTag) tag);
                 break;
             default:
-                throw new IOException("Invalid tag type: " + type + ".");
+                throw new IOException("Invalid tag type: " + type + '.');
         }
     }
 

Core/src/main/java/com/intellectualcrafters/json/JSONArray.java

@@ -179,7 +179,7 @@ public class JSONArray {
         Object object = get(index);
         try {
             return object instanceof Number ? ((Number) object).doubleValue() : Double.parseDouble((String) object);
-        } catch (NumberFormatException e) {
+        } catch (NumberFormatException ignored) {
             throw new JSONException("JSONArray[" + index + "] is not a number.");
         }
     }
@@ -197,7 +197,7 @@ public class JSONArray {
         Object object = get(index);
         try {
             return object instanceof Number ? ((Number) object).intValue() : Integer.parseInt((String) object);
-        } catch (NumberFormatException e) {
+        } catch (NumberFormatException ignored) {
             throw new JSONException("JSONArray[" + index + "] is not a number.");
         }
     }
@@ -249,7 +249,7 @@ public class JSONArray {
         Object object = get(index);
         try {
             return object instanceof Number ? ((Number) object).longValue() : Long.parseLong((String) object);
-        } catch (NumberFormatException e) {
+        } catch (NumberFormatException ignored) {
             throw new JSONException("JSONArray[" + index + "] is not a number.");
         }
     }
@@ -348,7 +348,7 @@ public class JSONArray {
     public boolean optBoolean(int index, boolean defaultValue) {
         try {
             return getBoolean(index);
-        } catch (JSONException e) {
+        } catch (JSONException ignored) {
             return defaultValue;
         }
     }
@@ -377,7 +377,7 @@ public class JSONArray {
     public double optDouble(int index, double defaultValue) {
         try {
             return getDouble(index);
-        } catch (JSONException e) {
+        } catch (JSONException ignored) {
             return defaultValue;
         }
     }
@@ -406,7 +406,7 @@ public class JSONArray {
     public int optInt(int index, int defaultValue) {
         try {
             return getInt(index);
-        } catch (JSONException e) {
+        } catch (JSONException ignored) {
             return defaultValue;
         }
     }
@@ -460,7 +460,7 @@ public class JSONArray {
     public long optLong(int index, long defaultValue) {
         try {
             return getLong(index);
-        } catch (JSONException e) {
+        } catch (JSONException ignored) {
             return defaultValue;
         }
     }
@@ -778,7 +778,7 @@ public class JSONArray {
     public String toString() {
         try {
             return this.toString(0);
-        } catch (JSONException e) {
+        } catch (JSONException ignored) {
             return null;
         }
     }

Core/src/main/java/com/intellectualcrafters/json/XML.java

@@ -61,7 +61,7 @@ class XML {
         }
         for (char c : string.toCharArray()) {
             if (Character.isWhitespace(c)) {
-                throw new JSONException("'" + string + "' contains a space character.");
+                throw new JSONException('\'' + string + "' contains a space character.");
             }
         }
     }
@@ -369,8 +369,8 @@ class XML {
                 return sb.toString();
             } else {
                 string = escape(object.toString());
-                return (tagName == null) ? "\"" + string + "\"" :
+                return (tagName == null) ? '"' + string + '"' :
-                        string.isEmpty() ? "<" + tagName + "/>" : "<" + tagName + ">" + string + "</" + tagName + ">";
+                        string.isEmpty() ? '<' + tagName + "/>" : '<' + tagName + '>' + string + "</" + tagName + '>';
             }
         }
     }

Core/src/main/java/com/intellectualcrafters/json/XMLTokener.java

@@ -1,5 +1,7 @@
 package com.intellectualcrafters.json;
 
+import java.util.HashMap;
+
 /**
  * The XMLTokener extends the JSONTokener to provide additional methods for the parsing of XML texts.
  *
@@ -10,9 +12,9 @@ public class XMLTokener extends JSONTokener {
     /**
      * The table of entity values. It initially contains Character values for amp, apos, gt, lt, quot.
      */
-    public static final java.util.HashMap<String, Character> entity;
+    public static final HashMap<String, Character> entity;
     static {
-        entity = new java.util.HashMap<String, Character>(8);
+        entity = new HashMap<>(8);
         entity.put("amp", XML.AMP);
         entity.put("apos", XML.APOS);
         entity.put("gt", XML.GT);
@@ -37,16 +39,14 @@ public class XMLTokener extends JSONTokener {
      * @throws JSONException If the <code>]]&gt;</code> is not found.
      */
     public String nextCDATA() throws JSONException {
-        char c;
-        int i;
         final StringBuilder sb = new StringBuilder();
         for (;;) {
-            c = next();
+            char c = next();
             if (end()) {
                 throw syntaxError("Unclosed CDATA");
             }
             sb.append(c);
-            i = sb.length() - 3;
+            int i = sb.length() - 3;
             if ((i >= 0) && (sb.charAt(i) == ']') && (sb.charAt(i + 1) == ']') && (sb.charAt(i + 2) == '>')) {
                 sb.setLength(i);
                 return sb.toString();
@@ -64,7 +64,6 @@ public class XMLTokener extends JSONTokener {
      */
     public Object nextContent() throws JSONException {
         char c;
-        StringBuilder sb;
         do {
             c = next();
         } while (Character.isWhitespace(c));
@@ -74,14 +73,14 @@ public class XMLTokener extends JSONTokener {
         if (c == '<') {
             return XML.LT;
         }
-        sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder();
         for (;;) {
             if ((c == '<') || (c == 0)) {
                 back();
                 return sb.toString().trim();
             }
             if (c == '&') {
-                sb.append(nextEntity(c));
+                sb.append(nextEntity('&'));
             } else {
                 sb.append(c);
             }
@@ -113,7 +112,7 @@ public class XMLTokener extends JSONTokener {
         }
         final String string = sb.toString();
         final Object object = entity.get(string);
-        return object != null ? object : ampersand + string + ";";
+        return object != null ? object : ampersand + string + ';';
     }
     
     /**
@@ -126,10 +125,10 @@ public class XMLTokener extends JSONTokener {
      */
     public Object nextMeta() throws JSONException {
         char c;
-        char q;
         do {
             c = next();
         } while (Character.isWhitespace(c));
+        char q;
         switch (c) {
             case 0:
                 throw syntaxError("Misshaped meta tag");
@@ -190,11 +189,11 @@ public class XMLTokener extends JSONTokener {
      */
     public Object nextToken() throws JSONException {
         char c;
-        char q;
-        StringBuilder sb;
         do {
             c = next();
         } while (Character.isWhitespace(c));
+        char q;
+        StringBuilder sb;
         switch (c) {
             case 0:
                 throw syntaxError("Misshaped element");
@@ -224,7 +223,7 @@ public class XMLTokener extends JSONTokener {
                         return sb.toString();
                     }
                     if (c == '&') {
-                        sb.append(nextEntity(c));
+                        sb.append(nextEntity('&'));
                     } else {
                         sb.append(c);
                     }
@@ -268,11 +267,8 @@ public class XMLTokener extends JSONTokener {
      * @throws JSONException
      */
     public boolean skipPast(final String to) throws JSONException {
-        boolean b;
         char c;
         int i;
-        int j;
-        int offset = 0;
         final int length = to.length();
         final char[] circle = new char[length];
         /*
@@ -287,9 +283,9 @@ public class XMLTokener extends JSONTokener {
             circle[i] = c;
         }
         /* We will loop, possibly for all of the remaining characters. */
-        for (;;) {
+        for (int offset = 0; ;) {
-            j = offset;
+            int j = offset;
-            b = true;
+            boolean b = true;
             /* Compare the circle buffer with the to string. */
             for (i = 0; i < length; i += 1) {
                 if (circle[j] != to.charAt(i)) {

Core/src/main/java/com/intellectualcrafters/plot/commands/DebugClaimTest.java

@@ -51,7 +51,7 @@ public class DebugClaimTest extends SubCommand {
             args[2].split(";");
             min = PlotId.fromString(args[1]);
             max = PlotId.fromString(args[2]);
-        } catch (Exception e) {
+        } catch (Exception ignored) {
             return !MainUtil.sendMessage(plr,
                     "&cInvalid min/max values. &7The values are to Plot IDs in the format &cX;Y &7where X;Y are the plot coords\nThe conversion "
                             + "will only check the plots in the selected area.");

Core/src/main/java/com/intellectualcrafters/plot/commands/DebugExec.java

@@ -187,7 +187,7 @@ public class DebugExec extends SubCommand {
                     double threshold;
                     try {
                         threshold = Integer.parseInt(args[1]) / 100d;
-                    } catch (NumberFormatException e) {
+                    } catch (NumberFormatException ignored) {
                         MainUtil.sendMessage(player, "$2Invalid threshold: " + args[1]);
                         MainUtil.sendMessage(player, "$1<threshold> $2= $1The percentage of plots you want to clear as a number between 0 - 100");
                         return false;

Core/src/main/java/com/intellectualcrafters/plot/commands/DebugPaste.java

@@ -30,7 +30,7 @@ public class DebugPaste extends SubCommand {
                     String latestLOG;
                     try {
                         latestLOG = HastebinUtility.upload(new File(PS.get().IMP.getDirectory(), "../../logs/latest.log"));
-                    } catch (IOException e) {
+                    } catch (IOException ignored) {
                         MainUtil.sendMessage(plr, "&clatest.log is too big to be pasted, will ignore");
                         latestLOG = "too big :(";
                     }
@@ -38,12 +38,12 @@ public class DebugPaste extends SubCommand {
                     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.settings_yml: ").append(settingsYML).append('\n');
-                    b.append("links.latest_log: ").append(latestLOG).append("\n");
+                    b.append("links.latest_log: ").append(latestLOG).append('\n');
                     b.append("\n# Server Information\n");
                     int[] sVersion = PS.get().IMP.getServerVersion();
-                    b.append("version.server: ").append(sVersion[0]).append('.').append(sVersion[1]).append('.').append(sVersion[2]).append("\n");
+                    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.OFFLINE_MODE).append("\n");
+                    b.append("online_mode: ").append(UUIDHandler.getUUIDWrapper()).append(';').append(!Settings.OFFLINE_MODE).append('\n');
                     b.append("plugins:");
                     for (String id : PS.get().IMP.getPluginIds()) {
                         String[] split = id.split(":");
@@ -51,13 +51,13 @@ public class DebugPaste extends SubCommand {
                         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: ")
+                        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.free: ").append(runtime.freeMemory()).append('\n');
-                    b.append("memory.max: ").append(runtime.maxMemory()).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");

Core/src/main/java/com/intellectualcrafters/plot/commands/DebugRoadRegen.java

@@ -37,7 +37,7 @@ public class DebugRoadRegen extends SubCommand {
                 if (MathMan.isInteger(args[0])) {
                     try {
                         extend = Integer.parseInt(args[0]);
-                    } catch (Exception e) {
+                    } catch (NumberFormatException ignored) {
                         C.NOT_VALID_NUMBER.send(player, "(0, <EXTEND HEIGHT>)");
                         return false;
                     }
@@ -45,7 +45,7 @@ public class DebugRoadRegen extends SubCommand {
             }
             boolean result = HybridUtils.manager.regenerateRoad(plotworld, chunk, extend);
             MainUtil.sendMessage(player,
-                    "&6Regenerating chunk: " + chunk.x + "," + chunk.z + "\n&6 - Result: " + (result ? "&aSuccess" : "&cFailed"));
+                    "&6Regenerating chunk: " + chunk.x + ',' + chunk.z + "\n&6 - Result: " + (result ? "&aSuccess" : "&cFailed"));
             MainUtil.sendMessage(player, "&cTo regenerate all roads: /plot regenallroads");
         } else {
             HybridPlotManager manager = (HybridPlotManager) plotworld.getPlotManager();

Core/src/main/java/com/intellectualcrafters/plot/commands/FlagCmd.java

@@ -95,8 +95,8 @@ public class FlagCmd extends SubCommand {
                     return false;
                 }
                 String value = StringMan.join(Arrays.copyOfRange(args, 2, args.length), " ");
-                if (!Permissions.hasPermission(player, "plots.set.flag." + args[1].toLowerCase() + "." + value.toLowerCase())) {
+                if (!Permissions.hasPermission(player, "plots.set.flag." + args[1].toLowerCase() + '.' + value.toLowerCase())) {
-                    MainUtil.sendMessage(player, C.NO_PERMISSION, "plots.set.flag." + args[1].toLowerCase() + "." + value.toLowerCase());
+                    MainUtil.sendMessage(player, C.NO_PERMISSION, "plots.set.flag." + args[1].toLowerCase() + '.' + value.toLowerCase());
                     return false;
                 }
                 Object parsed = flag.parseValue(value);
@@ -127,8 +127,8 @@ public class FlagCmd extends SubCommand {
                         return false;
                     }
                     for (String entry : args[2].split(",")) {
-                        if (!Permissions.hasPermission(player, "plots.set.flag." + args[1].toLowerCase() + "." + entry)) {
+                        if (!Permissions.hasPermission(player, "plots.set.flag." + args[1].toLowerCase() + '.' + entry)) {
-                            MainUtil.sendMessage(player, C.NO_PERMISSION, "plots.set.flag." + args[1].toLowerCase() + "." + entry);
+                            MainUtil.sendMessage(player, C.NO_PERMISSION, "plots.set.flag." + args[1].toLowerCase() + '.' + entry);
                             return false;
                         }
                     }
@@ -167,8 +167,8 @@ public class FlagCmd extends SubCommand {
                     return false;
                 }
                 for (String entry : args[2].split(",")) {
-                    if (!Permissions.hasPermission(player, "plots.set.flag." + args[1].toLowerCase() + "." + entry)) {
+                    if (!Permissions.hasPermission(player, "plots.set.flag." + args[1].toLowerCase() + '.' + entry)) {
-                        MainUtil.sendMessage(player, C.NO_PERMISSION, "plots.set.flag." + args[1].toLowerCase() + "." + entry);
+                        MainUtil.sendMessage(player, C.NO_PERMISSION, "plots.set.flag." + args[1].toLowerCase() + '.' + entry);
                         return false;
                     }
                 }

Core/src/main/java/com/intellectualcrafters/plot/commands/Inbox.java

@@ -47,7 +47,7 @@ public class Inbox extends SubCommand {
         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");
+                + '\n');
 
         // This might work xD
         for (int x = page * 12; x < max; x++) {
@@ -58,9 +58,8 @@ public class Inbox extends SubCommand {
             } else {
                 color = "&7";
             }
-            string.append(
+            string.append("&8[&7#").append(x + 1).append("&8][&7").append(comment.world).append(';').append(comment.id).append("&8][&6")
-                    "&8[&7#" + (x + 1) + "&8][&7" + comment.world + ";" + comment.id + "&8][&6" + comment.senderName + "&8]" + color + comment.comment
+                    .append(comment.senderName).append("&8]").append(color).append(comment.comment).append('\n');
-                            + "\n");
         }
         MainUtil.sendMessage(player, string.toString());
     }
@@ -71,7 +70,8 @@ public class Inbox extends SubCommand {
         if (plot == null) {
             sendMessage(player, C.NOT_IN_PLOT);
             return false;
-        } else if (!plot.hasOwner()) {
+        }
+        if (!plot.hasOwner()) {
             sendMessage(player, C.PLOT_UNOWNED);
             return false;
         }
@@ -98,7 +98,7 @@ public class Inbox extends SubCommand {
                                     } else {
                                         color = "";
                                     }
-                                    sendMessage(player, C.INBOX_ITEM, color + inbox.toString() + " (" + total + "/" + unread + ")");
+                                    sendMessage(player, C.INBOX_ITEM, color + inbox.toString() + " (" + total + '/' + unread + ')');
                                     return;
                                 }
                             }
@@ -135,7 +135,7 @@ public class Inbox extends SubCommand {
                             sendMessage(player, C.NOT_VALID_INBOX_INDEX, index + "");
                             return false;
                         }
-                    } catch (NumberFormatException e) {
+                    } catch (NumberFormatException ignored) {
                         sendMessage(player, C.COMMAND_SYNTAX, "/plot inbox " + inbox.toString() + " delete <index>");
                         return false;
                     }
@@ -171,7 +171,7 @@ public class Inbox extends SubCommand {
                 default:
                     try {
                         page = Integer.parseInt(args[1]);
-                    } catch (NumberFormatException e) {
+                    } catch (NumberFormatException ignored) {
                         sendMessage(player, C.COMMAND_SYNTAX, "/plot inbox [inbox] [delete <index>|clear|page]");
                         return false;
                     }

Core/src/main/java/com/intellectualcrafters/plot/commands/RegenAllRoads.java

@@ -31,7 +31,7 @@ public class RegenAllRoads extends SubCommand {
         if (args.length == 2) {
             try {
                 height = Integer.parseInt(args[1]);
-            } catch (NumberFormatException e) {
+            } catch (NumberFormatException ignored) {
                 MainUtil.sendMessage(plr, C.NOT_VALID_NUMBER, "(0, 256)");
                 MainUtil.sendMessage(plr, C.COMMAND_SYNTAX, "/plot regenallroads <world> [height]");
                 return false;

Core/src/main/java/com/intellectualcrafters/plot/commands/Save.java

@@ -68,7 +68,7 @@ public class Save extends SubCommand {
                         int size = (corners[1].getX() - corners[0].getX()) + 1;
                         PlotId id = plot.getId();
                         String world = plot.getArea().toString().replaceAll(";", "-").replaceAll("[^A-Za-z0-9]", "");
-                        final String file = time + "_" + world + "_" + id.x + "_" + id.y + "_" + size + "_" + name;
+                        final String file = time + '_' + world + '_' + id.x + '_' + id.y + '_' + size + '_' + name;
                         UUID uuid = plr.getUUID();
                         SchematicHandler.manager.upload(value, uuid, file, new RunnableVal<URL>() {
                             @Override

Core/src/main/java/com/intellectualcrafters/plot/commands/Set.java

@@ -101,7 +101,7 @@ public class Set extends SubCommand {
                                     }
                                 }
                             }
-                        } catch (Exception e2) {
+                        } catch (Exception ignored) {
                             MainUtil.sendMessage(plr, C.NOT_VALID_BLOCK, material);
                             return false;
                         }

Core/src/main/java/com/intellectualcrafters/plot/commands/SubCommand.java

@@ -9,7 +9,7 @@ import com.plotsquared.general.commands.Command;
 
 /**
  * SubCommand class
- * @see com.plotsquared.general.commands.Command(com.plotsquared.general.commands.Command, boolean)
+ * @see Command(Command, boolean)
  * @Deprecated In favor of normal Command class
  */
 public abstract class SubCommand extends Command {

Core/src/main/java/com/intellectualcrafters/plot/commands/Update.java

@@ -27,7 +27,7 @@ public class Update extends SubCommand {
         } else if (args.length == 1) {
             try {
                 url = new URL(args[0]);
-            } catch (MalformedURLException e) {
+            } catch (MalformedURLException ignored) {
                 MainUtil.sendMessage(plr, "&cInvalid URL: " + args[0]);
                 MainUtil.sendMessage(plr, C.COMMAND_SYNTAX, "/plot update [url]");
                 return false;

Core/src/main/java/com/intellectualcrafters/plot/commands/Visit.java

@@ -89,7 +89,7 @@ public class Visit extends SubCommand {
             }
         }
         if (page < 1 || page > unsorted.size()) {
-            sendMessage(player, C.NOT_VALID_NUMBER, "(1, " + unsorted.size() + ")");
+            sendMessage(player, C.NOT_VALID_NUMBER, "(1, " + unsorted.size() + ')');
             return false;
         }
         List<Plot> plots = PS.get().sortPlotsByTemp(unsorted);

Core/src/main/java/com/intellectualcrafters/plot/config/ConfigurationNode.java

@@ -35,7 +35,7 @@ public class ConfigurationNode {
         try {
             Object result = this.type.parseString(string);
             return result != null;
-        } catch (Exception e) {
+        } catch (Exception ignored) {
             return false;
         }
     }
@@ -51,13 +51,15 @@ public class ConfigurationNode {
     public Object getValue() {
         if (this.value instanceof String[]) {
             return Arrays.asList((String[]) this.value);
-        } else if (this.value instanceof Object[]) {
+        }
-            List<String> values = new ArrayList<String>();
+        if (this.value instanceof Object[]) {
+            List<String> values = new ArrayList<>();
             for (Object value : (Object[]) this.value) {
                 values.add(value.toString());
             }
             return values;
-        } else if (this.value instanceof PlotBlock) {
+        }
+        if (this.value instanceof PlotBlock) {
             return this.value.toString();
         }
         return this.value;

Core/src/main/java/com/intellectualcrafters/plot/database/DBFunc.java

@@ -11,7 +11,6 @@ import com.intellectualcrafters.plot.object.comment.PlotComment;
 import java.sql.ResultSet;
 import java.sql.ResultSetMetaData;
 import java.sql.SQLException;
-import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Set;
@@ -58,7 +57,7 @@ public class DBFunc {
                 }
             }
             return false;
-        } catch (SQLException e) {
+        } catch (SQLException ignored) {
             return false;
         }
     }

Core/src/main/java/com/intellectualcrafters/plot/database/Database.java

@@ -3,6 +3,7 @@ package com.intellectualcrafters.plot.database;
 import java.sql.Connection;
 import java.sql.ResultSet;
 import java.sql.SQLException;
+import java.sql.Statement;
 
 /**
  * Abstract Database class, serves as a base for any connection method (MySQL, SQLite, etc.)
@@ -64,12 +65,12 @@ public abstract class Database {
     
     /**
      * Executes an Update SQL Query.
-     * See {@link java.sql.Statement#executeUpdate(String)}.
+     * See {@link Statement#executeUpdate(String)}.
      * If the connection is closed, it will be opened.
      *
      * @param query Query to be run
      *
-     * @return Result Code, see {@link java.sql.Statement#executeUpdate(String)}
+     * @return Result Code, see {@link Statement#executeUpdate(String)}
      *
      * @throws SQLException           If the query cannot be executed
      * @throws ClassNotFoundException If the driver cannot be found; see {@link #openConnection()}

Core/src/main/java/com/intellectualcrafters/plot/database/MySQL.java

@@ -45,7 +45,7 @@ public class MySQL extends Database {
     public Connection forceConnection() throws SQLException, ClassNotFoundException {
         Class.forName("com.mysql.jdbc.Driver");
         this.connection =
-                DriverManager.getConnection("jdbc:mysql://" + this.hostname + ":" + this.port + "/" + this.database, this.user, this.password);
+                DriverManager.getConnection("jdbc:mysql://" + this.hostname + ':' + this.port + '/' + this.database, this.user, this.password);
         return this.connection;
     }
 
@@ -55,9 +55,9 @@ public class MySQL extends Database {
             return this.connection;
         }
         Class.forName("com.mysql.jdbc.Driver");
-        PS.debug("jdbc:mysql://" + this.hostname + ":" + this.port + "/" + this.database);
+        PS.debug("jdbc:mysql://" + this.hostname + ':' + this.port + '/' + this.database);
         this.connection =
-                DriverManager.getConnection("jdbc:mysql://" + this.hostname + ":" + this.port + "/" + this.database, this.user, this.password);
+                DriverManager.getConnection("jdbc:mysql://" + this.hostname + ':' + this.port + '/' + this.database, this.user, this.password);
         return this.connection;
     }
 

Core/src/main/java/com/intellectualcrafters/plot/database/SQLManager.java

@@ -1467,9 +1467,7 @@ public class SQLManager implements AbstractDB {
             if (this.mySQL && !PS.get().checkVersion(oldVersion, 3, 3, 2)) {
                 try (Statement stmt = this.connection.createStatement()) {
                     stmt.executeUpdate("ALTER TABLE `" + this.prefix + "plots` DROP INDEX `unique_alias`");
-                } catch (SQLException ignore) {
+                } catch (SQLException ignored) {}
-                    //ignored
-                }
             }
             DatabaseMetaData data = this.connection.getMetaData();
             ResultSet rs = data.getColumns(null, null, this.prefix + "plot_comments", "plot_plot_id");

Core/src/main/java/com/intellectualcrafters/plot/flag/DoubleFlag.java

@@ -13,7 +13,7 @@ public class DoubleFlag extends Flag<Double> {
     @Override public Double parseValue(String value) {
         try {
             return Double.parseDouble(value);
-        } catch (IllegalArgumentException e) {
+        } catch (NumberFormatException ignored) {
             return null;
         }
 

Core/src/main/java/com/intellectualcrafters/plot/flag/FlagManager.java

@@ -11,6 +11,7 @@ import com.intellectualcrafters.plot.object.PlotPlayer;
 import com.intellectualcrafters.plot.object.PlotSettings;
 import com.intellectualcrafters.plot.util.EventUtil;
 import com.intellectualcrafters.plot.util.Permissions;
+
 import java.lang.reflect.Field;
 import java.util.ArrayList;
 import java.util.Collections;
@@ -32,7 +33,7 @@ public class FlagManager {
     /**
      * Some events can be called millions of times each second (e.g. physics) and reusing is a lot faster.
      */
-    private static Optional MUTABLE_OPTIONAL;
+    private static final Optional MUTABLE_OPTIONAL;
     private static Field MUTABLE_OPTIONAL_FIELD;
     static {
             MUTABLE_OPTIONAL = Optional.of(new Object());
@@ -51,7 +52,9 @@ public class FlagManager {
                 try {
                     MUTABLE_OPTIONAL_FIELD.set(MUTABLE_OPTIONAL, value);
                     return MUTABLE_OPTIONAL;
-                } catch (IllegalAccessException e) {e.printStackTrace();}
+                } catch (IllegalAccessException e) {
+                    e.printStackTrace();
+                }
             }
             return Optional.of(value);
         }
@@ -97,9 +100,9 @@ public class FlagManager {
         for (Map.Entry<Flag<?>, Object> entry : flags.entrySet()) {
             Flag<?> flag = entry.getKey();
             if (i != 0) {
-                flag_string.append(",");
+                flag_string.append(',');
             }
-           flag_string.append(flag.getName() + ":" + flag.valueToString(entry.getValue()).replaceAll(":", "¯").replaceAll(",", "´"));
+           flag_string.append(flag.getName() + ':' + flag.valueToString(entry.getValue()).replaceAll(":", "¯").replaceAll(",", "´"));
             i++;
         }
         return flag_string.toString();

Core/src/main/java/com/intellectualcrafters/plot/flag/IntegerFlag.java

@@ -17,7 +17,7 @@ public class IntegerFlag extends Flag<Integer> {
     @Override public Integer parseValue(String value) {
         try {
             return Integer.parseInt(value);
-        } catch (IllegalArgumentException e) {
+        } catch (NumberFormatException ignored) {
             return null;
         }
     }

Core/src/main/java/com/intellectualcrafters/plot/generator/SquarePlotWorld.java

@@ -18,7 +18,7 @@ public abstract class SquarePlotWorld extends GridPlotWorld {
     @Override
     public void loadConfiguration(ConfigurationSection config) {
         if (!config.contains("plot.height")) {
-            PS.debug(" - &cConfiguration is null? (" + config.getCurrentPath() + ")");
+            PS.debug(" - &cConfiguration is null? (" + config.getCurrentPath() + ')');
         }
         this.PLOT_WIDTH = config.getInt("plot.size");
         this.ROAD_WIDTH = config.getInt("road.width");

Core/src/main/java/com/intellectualcrafters/plot/object/BO3.java

@@ -24,8 +24,8 @@ public class BO3 {
 
     public void addChild(BO3 child) {
         ChunkLoc childloc = child.getLoc();
-        this.children.append("Branch(").append(childloc.x - this.chunk.x).append(",0,").append(childloc.z - this.chunk.z).append(",")
+        this.children.append("Branch(").append(childloc.x - this.chunk.x).append(",0,").append(childloc.z - this.chunk.z).append(',')
-                .append(this.name).append("_").append(childloc.x).append("_").append(childloc.z).append(")\n");
+                .append(this.name).append('_').append(childloc.x).append('_').append(childloc.z).append(")\n");
     }
 
     public ChunkLoc getLoc() {
@@ -43,9 +43,9 @@ public class BO3 {
     public void addBlock(int x, int y, int z, PlotBlock block) {
         if (block.data == 0) {
             // Block(-3,1,-2,AIR)
-            this.blocks.append("Block(").append(x).append(",").append(y).append(",").append(z).append(",").append(block.id).append(")\n");
+            this.blocks.append("Block(").append(x).append(',').append(y).append(',').append(z).append(',').append(block.id).append(")\n");
         } else {
-            this.blocks.append("Block(").append(x).append(",").append(y).append(",").append(z).append(",").append(block.id).append(":")
+            this.blocks.append("Block(").append(x).append(',').append(y).append(',').append(z).append(',').append(block.id).append(':')
                     .append(block.data).append(")\n");
         }
     }
@@ -66,7 +66,7 @@ public class BO3 {
         if (this.chunk.x == 0 && this.chunk.z == 0) {
             return this.name + ".bo3";
         } else {
-            return this.name + ("_" + this.chunk.x + "_" + this.chunk.z) + ".bo3";
+            return this.name + ("_" + this.chunk.x + '_' + this.chunk.z) + ".bo3";
         }
     }
 }

Core/src/main/java/com/intellectualcrafters/plot/util/BO3Handler.java

@@ -276,7 +276,7 @@ public class BO3Handler {
             if (bo3.getLoc().x == 0 && bo3.getLoc().z == 0) {
                 bo3File = MainUtil.getFile(base.getParentFile(), bo3.getName() + ".bo3");
             } else {
-                bo3File = MainUtil.getFile(base.getParentFile(), bo3.getName() + "_" + bo3.getLoc().x + "_" + bo3.getLoc().z + ".bo3");
+                bo3File = MainUtil.getFile(base.getParentFile(), bo3.getName() + '_' + bo3.getLoc().x + '_' + bo3.getLoc().z + ".bo3");
             }
             bo3File.createNewFile();
             Files.write(bo3File.toPath(), StringMan.join(lines, System.getProperty("line.separator")).getBytes(), StandardOpenOption.WRITE);

Core/src/main/java/com/intellectualcrafters/plot/util/EventUtil.java

@@ -137,7 +137,7 @@ public abstract class EventUtil {
                 if (Permissions.hasPermission(pp, C.PERMISSION_ADMIN_INTERACT_OTHER.s(), notifyPerms)) {
                     return true;
                 }
-                return !(!notifyPerms || MainUtil.sendMessage(pp, C.FLAG_TUTORIAL_USAGE, C.FLAG_USE.s() + "/" + C.FLAG_BREAK.s()));
+                return !(!notifyPerms || MainUtil.sendMessage(pp, C.FLAG_TUTORIAL_USAGE, C.FLAG_USE.s() + '/' + C.FLAG_BREAK.s()));
             case BREAK_HANGING:
                 if (plot == null) {
                     return Permissions.hasPermission(pp, C.PERMISSION_ADMIN_INTERACT_ROAD.s(), notifyPerms);
@@ -261,7 +261,7 @@ public abstract class EventUtil {
                     if (Permissions.hasPermission(pp, C.PERMISSION_ADMIN_INTERACT_OTHER.s(), notifyPerms)) {
                         return true;
                     }
-                    return !(!notifyPerms || MainUtil.sendMessage(pp, C.FLAG_TUTORIAL_USAGE, C.FLAG_USE.s() + "/" + C.FLAG_HANGING_INTERACT.s()));
+                    return !(!notifyPerms || MainUtil.sendMessage(pp, C.FLAG_TUTORIAL_USAGE, C.FLAG_USE.s() + '/' + C.FLAG_HANGING_INTERACT.s()));
                 }
                 return true;
             }
@@ -287,7 +287,7 @@ public abstract class EventUtil {
                     if (Permissions.hasPermission(pp, C.PERMISSION_ADMIN_INTERACT_OTHER.s(), notifyPerms)) {
                         return true;
                     }
-                    return !(!notifyPerms || MainUtil.sendMessage(pp, C.FLAG_TUTORIAL_USAGE, C.FLAG_USE.s() + "/" + C.FLAG_MISC_INTERACT.s()));
+                    return !(!notifyPerms || MainUtil.sendMessage(pp, C.FLAG_TUTORIAL_USAGE, C.FLAG_USE.s() + '/' + C.FLAG_MISC_INTERACT.s()));
                 }
                 return true;
             }
@@ -312,7 +312,7 @@ public abstract class EventUtil {
                     if (Permissions.hasPermission(pp, C.PERMISSION_ADMIN_INTERACT_OTHER.s(), notifyPerms)) {
                         return true;
                     }
-                    return !(!notifyPerms || MainUtil.sendMessage(pp, C.FLAG_TUTORIAL_USAGE, C.FLAG_USE.s() + "/" + C.FLAG_VEHICLE_USE.s()));
+                    return !(!notifyPerms || MainUtil.sendMessage(pp, C.FLAG_TUTORIAL_USAGE, C.FLAG_USE.s() + '/' + C.FLAG_VEHICLE_USE.s()));
                 }
                 return true;
             }
@@ -337,7 +337,7 @@ public abstract class EventUtil {
                     if (Permissions.hasPermission(pp, C.PERMISSION_ADMIN_INTERACT_OTHER.s(), notifyPerms)) {
                         return true;
                     }
-                    return !(!notifyPerms || MainUtil.sendMessage(pp, C.FLAG_TUTORIAL_USAGE, C.FLAG_MOB_PLACE.s() + "/" + C.FLAG_PLACE.s()));
+                    return !(!notifyPerms || MainUtil.sendMessage(pp, C.FLAG_TUTORIAL_USAGE, C.FLAG_MOB_PLACE.s() + '/' + C.FLAG_PLACE.s()));
                 }
                 return true;
             }
@@ -364,7 +364,7 @@ public abstract class EventUtil {
                     if (Permissions.hasPermission(pp, C.PERMISSION_ADMIN_INTERACT_OTHER.s(), notifyPerms)) {
                         return true;
                     }
-                    return !(!notifyPerms || MainUtil.sendMessage(pp, C.FLAG_TUTORIAL_USAGE, C.FLAG_MISC_PLACE.s() + "/" + C.FLAG_PLACE.s()));
+                    return !(!notifyPerms || MainUtil.sendMessage(pp, C.FLAG_TUTORIAL_USAGE, C.FLAG_MISC_PLACE.s() + '/' + C.FLAG_PLACE.s()));
                 }
 
                 return true;
@@ -390,7 +390,7 @@ public abstract class EventUtil {
                     if (Permissions.hasPermission(pp, C.PERMISSION_ADMIN_INTERACT_OTHER.s(), notifyPerms)) {
                         return true;
                     }
-                    return !(!notifyPerms || MainUtil.sendMessage(pp, C.FLAG_TUTORIAL_USAGE, C.FLAG_VEHICLE_PLACE.s() + "/" + C.FLAG_PLACE.s()));
+                    return !(!notifyPerms || MainUtil.sendMessage(pp, C.FLAG_TUTORIAL_USAGE, C.FLAG_VEHICLE_PLACE.s() + '/' + C.FLAG_PLACE.s()));
                 }
                 return true;
             default:

Core/src/main/java/com/intellectualcrafters/plot/util/MainUtil.java

@@ -19,6 +19,7 @@ import com.intellectualcrafters.plot.object.PlotPlayer;
 import com.intellectualcrafters.plot.object.PseudoRandom;
 import com.intellectualcrafters.plot.object.RegionWrapper;
 import com.intellectualcrafters.plot.object.RunnableVal;
+
 import java.io.File;
 import java.io.IOException;
 import java.io.OutputStream;
@@ -152,7 +153,7 @@ public class MainUtil {
                         String param = "value";
                         writer.append(CRLF).append(param).append(CRLF).flush();
                         writer.append("--" + boundary).append(CRLF);
-                        writer.append("Content-Disposition: form-data; name=\"schematicFile\"; filename=\"" + filename + "\"").append(CRLF);
+                        writer.append("Content-Disposition: form-data; name=\"schematicFile\"; filename=\"" + filename + '"').append(CRLF);
                         writer.append("Content-Type: " + URLConnection.guessContentTypeFromName(filename)).append(CRLF);
                         writer.append("Content-Transfer-Encoding: binary").append(CRLF);
                         writer.append(CRLF).flush();
@@ -737,7 +738,6 @@ public class MainUtil {
         String description = !descriptionFlag.isPresent() ? C.NONE.s() : Flags.DESCRIPTION.valueToString(descriptionFlag.get());
 
         StringBuilder flags = new StringBuilder();
-        {
         HashMap<Flag<?>, Object> flagMap = FlagManager.getPlotFlags(plot.getArea(), plot.getSettings(), true);
         if (flagMap.isEmpty()) {
                 flags.append(C.NONE.s());
@@ -748,14 +748,13 @@ public class MainUtil {
                 prefix = ", ";
             }
         }
-        }
         boolean build = plot.isAdded(player.getUUID());
 
         String owner = plot.getOwners().isEmpty() ? "unowned" : getPlayerList(plot.getOwners());
 
         info = info.replace("%id%", plot.getId().toString());
         info = info.replace("%alias%", alias);
-        info = info.replace("%num%", num + "");
+        info = info.replace("%num%", String.valueOf(num));
         info = info.replace("%desc%", description);
         info = info.replace("%biome%", biome);
         info = info.replace("%owner%", owner);
@@ -766,7 +765,7 @@ public class MainUtil {
         info = info.replace("%denied%", denied);
         info = info.replace("%expires%", expires);
         info = info.replace("%flags%", flags);
-        info = info.replace("%build%", build + "");
+        info = info.replace("%build%", String.valueOf(build));
         info = info.replace("%desc%", "No description set.");
         if (info.contains("%rating%")) {
             final String newInfo = info;

Core/src/main/java/com/intellectualcrafters/plot/util/SchematicHandler.java

@@ -80,7 +80,7 @@ public abstract class SchematicHandler {
                 }
                 final String name;
                 if (namingScheme == null) {
-                    name = plot.getId().x + ";" + plot.getId().y + "," + plot.getArea() + "," + o;
+                    name = plot.getId().x + ";" + plot.getId().y + ',' + plot.getArea() + ',' + o;
                 } else {
                     name = namingScheme.replaceAll("%owner%", o).replaceAll("%id%", plot.getId().toString()).replaceAll("%idx%", plot.getId().x + "").replaceAll("%idy%", plot.getId().y + "")
                             .replaceAll("%world%", plot.getArea().toString());
@@ -170,7 +170,7 @@ public abstract class SchematicHandler {
                     if (((region.maxX - region.minX + xOffset + 1) < WIDTH) || ((region.maxZ - region.minZ + zOffset + 1) < LENGTH) || (HEIGHT
                             > 256)) {
                         PS.debug("Schematic is too large");
-                        PS.debug("(" + WIDTH + "," + LENGTH + "," + HEIGHT + ") is bigger than (" + (region.maxX - region.minX) + "," + (region.maxZ - region.minZ) + ",256)");
+                        PS.debug("(" + WIDTH + ',' + LENGTH + ',' + HEIGHT + ") is bigger than (" + (region.maxX - region.minX) + ',' + (region.maxZ - region.minZ) + ",256)");
                         TaskManager.runTask(whenDone);
                         return;
                     }

Core/src/main/java/com/intellectualcrafters/plot/util/UUIDHandler.java

@@ -26,7 +26,7 @@ public class UUIDHandler {
      *
      * @return map with names + uuids
      *
-     * @see com.google.common.collect.BiMap
+     * @see BiMap
      */
     public static BiMap<StringWrapper, UUID> getUuidMap() {
         return implementation.getUUIDMap();
@@ -39,7 +39,7 @@ public class UUIDHandler {
      *
      * @return true of the uuid is cached
      *
-     * @see com.google.common.collect.BiMap#containsValue(Object)
+     * @see BiMap#containsValue(Object)
      */
     public static boolean uuidExists(UUID uuid) {
         return implementation.uuidExists(uuid);
@@ -52,7 +52,7 @@ public class UUIDHandler {
      *
      * @return true of the name is cached
      *
-     * @see com.google.common.collect.BiMap#containsKey(Object)
+     * @see BiMap#containsKey(Object)
      */
     public static boolean nameExists(StringWrapper name) {
         return implementation.nameExists(name);

Core/src/main/java/com/intellectualcrafters/plot/util/WorldUtil.java

@@ -124,7 +124,7 @@ public abstract class WorldUtil {
     }
 
     public File getMcr(String world, int x, int z) {
-        File file = new File(PS.get().IMP.getWorldContainer(), world + File.separator + "region" + File.separator + "r." + x + "." + z + ".mca");
+        File file = new File(PS.get().IMP.getWorldContainer(), world + File.separator + "region" + File.separator + "r." + x + '.' + z + ".mca");
         if (file.exists()) {
             return file;
         }

Core/src/main/java/com/plotsquared/listener/PlotListener.java

@@ -44,11 +44,16 @@ public class PlotListener {
         EventUtil.manager.callEntry(pp, plot);
         if (plot.hasOwner()) {
             Map<Flag<?>, Object> flags = FlagManager.getPlotFlags(plot);
-            int size = flags.size();
             boolean titles = Settings.TITLES;
             final String greeting;
 
-            if (size != 0) {
+            if (flags.isEmpty()) {
+                if (titles) {
+                    greeting = "";
+                } else {
+                    return true;
+                }
+            } else {
                 Optional<Boolean> titleFlag = plot.getFlag(Flags.TITLES);
                 if (titleFlag.isPresent()) {
                     titles = titleFlag.get();
@@ -97,7 +102,7 @@ public class PlotListener {
                     try {
                         long time = timeFlag.get();
                         pp.setTime(time);
-                    } catch (Exception e) {
+                    } catch (Exception ignored) {
                         FlagManager.removePlotFlag(plot, Flags.TIME);
                     }
                 }
@@ -133,10 +138,6 @@ public class PlotListener {
                     }
                 }
                 CommentManager.sendTitle(pp, plot);
-            } else if (titles) {
-                greeting = "";
-            } else {
-                return true;
             }
             if (titles) {
                 if (!C.TITLE_ENTERED_PLOT.s().isEmpty() || !C.TITLE_ENTERED_PLOT_SUB.s().isEmpty()) {
@@ -146,7 +147,7 @@ public class PlotListener {
                             Plot lastPlot = pp.getMeta("lastplot");
                             if ((lastPlot != null) && plot.getId().equals(lastPlot.getId())) {
                                 Map<String, String> replacements = new HashMap<>();
-                                replacements.put("%x%", lastPlot.getId().x + "");
+                                replacements.put("%x%", String.valueOf(lastPlot.getId().x));
                                 replacements.put("%z%", lastPlot.getId().y + "");
                                 replacements.put("%world%", plot.getArea().toString());
                                 replacements.put("%greeting%", greeting);

Sponge/src/main/java/com/plotsquared/sponge/SpongeMain.java

@@ -76,6 +76,7 @@ import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 import java.util.UUID;
+import java.util.stream.Collectors;
 
 @Plugin(id = "com.plotsquared", name = "PlotSquared", description = "Easy, yet powerful Plot World generation and management.", url = "https://github.com/IntellectualSites/PlotSquared", version = "3.3.3")
 public class SpongeMain implements IPlotMain {
@@ -258,7 +259,7 @@ public class SpongeMain implements IPlotMain {
         try {
             Class.forName("com.sk89q.worldedit.WorldEdit");
             return true;
-        } catch (Throwable e) {
+        } catch (ClassNotFoundException ignored) {
             return false;
         }
     }
@@ -306,7 +307,7 @@ public class SpongeMain implements IPlotMain {
             Metrics metrics = new Metrics(this.game, this.plugin);
             metrics.start();
             log(C.PREFIX.s() + "&6Metrics enabled.");
-        } catch (IOException e) {
+        } catch (IOException ignored) {
             log(C.PREFIX.s() + "&cFailed to load up metrics.");
         }
     }
@@ -376,7 +377,7 @@ public class SpongeMain implements IPlotMain {
             try {
                 MainUtil.canSendChunk = true;
                 return new FastQueue();
-            } catch (Throwable e) {
+            } catch (RuntimeException e) {
                 e.printStackTrace();
             }
         }
@@ -412,10 +413,7 @@ public class SpongeMain implements IPlotMain {
     
     @Override
     public List<String> getPluginIds() {
-        ArrayList<String> names = new ArrayList<>();
+        return this.game.getPluginManager().getPlugins().stream().map(plugin1 -> plugin1.getName() + ';' + plugin1.getVersion() + ':' + true)
-        for (PluginContainer plugin : this.game.getPluginManager().getPlugins()) {
+                .collect(Collectors.toCollection(ArrayList::new));
-            names.add(plugin.getName() + ";" + plugin.getVersion() + ":" + true);
-        }
-        return names;
     }
 }

Sponge/src/main/java/com/plotsquared/sponge/util/SpongeCommand.java

@@ -30,7 +30,7 @@ public class SpongeCommand implements CommandCallable {
                 UUID uuid = UUID.fromString(id);
                 Player player = SpongeMain.THIS.getServer().getPlayer(uuid).get();
                 pp = SpongeUtil.getPlayer(player);
-            } catch (Exception e) {
+            } catch (Exception ignored) {
                 pp = ConsolePlayer.getConsole();
             }
             MainCommand.onCommand(pp, string.isEmpty() ? new String[]{} : string.split(" "));