src/main/java/com/lishid/openinv/OpenInv.java

@@ -78,7 +78,7 @@ public class OpenInv extends JavaPlugin {
         getCommand("openinv").setExecutor(new OpenInvCommand(this));
         getCommand("openender").setExecutor(new OpenEnderCommand(this));
         getCommand("searchinv").setExecutor(new SearchInvCommand(this));
-        getCommand("searchender").setExecutor(new SearchEnderCommand(this));
+        getCommand("searchender").setExecutor(new SearchEnderCommand());
         getCommand("toggleopeninv").setExecutor(new ToggleOpenInvCommand(this));
         getCommand("anychest").setExecutor(new AnyChestCommand(this));
         getCommand("silentchest").setExecutor(new SilentChestCommand(this));

src/main/java/com/lishid/openinv/commands/SearchEnderCommand.java

@@ -13,12 +13,6 @@ import com.lishid.openinv.Permissions;
 
 public class SearchEnderCommand implements CommandExecutor {
 
-    private OpenInv plugin;
-
-    public SearchEnderCommand(OpenInv plugin) {
-        this.plugin = plugin;
-    }
-
     @Override
     public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
         if (command.getName().equalsIgnoreCase("searchender")) {

src/main/java/com/lishid/openinv/internal/PlayerDataManager.java

@@ -32,7 +32,7 @@ import net.minecraft.server.v1_9_R1.PlayerInteractManager;
 
 public class PlayerDataManager {
 
-    private OpenInv plugin;
+    private final OpenInv plugin;
 
     public PlayerDataManager(OpenInv plugin) {
         this.plugin = plugin;

src/main/java/com/lishid/openinv/internal/SpecialPlayerInventory.java

@@ -18,17 +18,19 @@ package com.lishid.openinv.internal;
 
 import java.lang.reflect.Field;
 
+import org.bukkit.craftbukkit.v1_9_R1.entity.CraftHumanEntity;
+import org.bukkit.craftbukkit.v1_9_R1.entity.CraftPlayer;
+import org.bukkit.craftbukkit.v1_9_R1.inventory.CraftInventory;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.Inventory;
 
-// Volatile
-import net.minecraft.server.v1_9_R1.*;
-
-import org.bukkit.craftbukkit.v1_9_R1.entity.*;
-import org.bukkit.craftbukkit.v1_9_R1.inventory.*;
-
 import com.lishid.openinv.OpenInv;
 
+import net.minecraft.server.v1_9_R1.ContainerUtil;
+import net.minecraft.server.v1_9_R1.EntityHuman;
+import net.minecraft.server.v1_9_R1.ItemStack;
+import net.minecraft.server.v1_9_R1.PlayerInventory;
+
 public class SpecialPlayerInventory extends PlayerInventory {
 
     private final CraftInventory inventory = new CraftInventory(this);

src/main/java/com/lishid/openinv/listeners/OpenInvPlayerListener.java

@@ -56,9 +56,9 @@ public class OpenInvPlayerListener implements Listener {
             inventory.playerOnline(event.getPlayer());
         }
 
-        SpecialEnderChest chest = OpenInv.enderChests.get(player.getUniqueId());
+        SpecialEnderChest enderChest = OpenInv.enderChests.get(player.getUniqueId());
-        if (chest != null) {
+        if (enderChest != null) {
-            chest.playerOnline(event.getPlayer());
+            enderChest.playerOnline(event.getPlayer());
         }
     }
 
@@ -71,9 +71,9 @@ public class OpenInvPlayerListener implements Listener {
             inventory.playerOffline();
         }
 
-        SpecialEnderChest chest = OpenInv.enderChests.get(player.getUniqueId());
+        SpecialEnderChest enderChest = OpenInv.enderChests.get(player.getUniqueId());
-        if (chest != null) {
+        if (enderChest != null) {
-            chest.playerOffline();
+            enderChest.playerOffline();
         }
     }
 
@@ -118,8 +118,7 @@ public class OpenInvPlayerListener implements Listener {
                     if (OpenInv.hasPermission(player, Permissions.PERM_ANYCHEST) && configuration.getPlayerAnyChestStatus(player)) {
                         try {
                             anyChest = plugin.getAnySilentChest().isAnyChestNeeded(player, x, y, z);
-                        }
+                        } catch (Exception e) {
-                        catch (Exception e) {
                             player.sendMessage(ChatColor.RED + "Error while executing openinv. Unsupported CraftBukkit.");
                             e.printStackTrace();
                         }
@@ -139,13 +138,13 @@ public class OpenInvPlayerListener implements Listener {
                 if (block.getState() instanceof Sign) {
                     try {
                         Sign sign = (Sign) block.getState();
+
                         if (OpenInv.hasPermission(player, Permissions.PERM_OPENINV) && sign.getLine(0).equalsIgnoreCase("[openinv]")) {
                             String text = sign.getLine(1).trim() + sign.getLine(2).trim() + sign.getLine(3).trim();
                             player.performCommand("openinv " + text);
                         }
-                    }
+                    } catch (Exception e) {
-                    catch (Exception e) {
+                        player.sendMessage(ChatColor.RED + "An internal error occured.");
-                        player.sendMessage("Internal Error.");
                         e.printStackTrace();
                     }
 

src/main/java/com/lishid/openinv/utils/UUIDFetcher.java

@@ -15,6 +15,7 @@ import org.json.simple.parser.JSONParser;
 import com.google.common.collect.ImmutableList;
 
 public class UUIDFetcher implements Callable<Map<String, UUID>> {
+
     private static final double PROFILES_PER_REQUEST = 100;
     private static final String PROFILE_URL = "https://api.mojang.com/profiles/minecraft";
     private final JSONParser jsonParser = new JSONParser();
@@ -34,11 +35,13 @@ public class UUIDFetcher implements Callable<Map<String, UUID>> {
     public Map<String, UUID> call() throws Exception {
         Map<String, UUID> uuidMap = new HashMap<String, UUID>();
         int requests = (int) Math.ceil(names.size() / PROFILES_PER_REQUEST);
+
         for (int i = 0; i < requests; i++) {
             HttpURLConnection connection = createConnection();
             String body = JSONArray.toJSONString(names.subList(i * 100, Math.min((i + 1) * 100, names.size())));
             writeBody(connection, body);
             JSONArray array = (JSONArray) jsonParser.parse(new InputStreamReader(connection.getInputStream()));
+
             for (Object profile : array) {
                 JSONObject jsonProfile = (JSONObject) profile;
                 String id = (String) jsonProfile.get("id");
@@ -46,10 +49,12 @@ public class UUIDFetcher implements Callable<Map<String, UUID>> {
                 UUID uuid = UUIDFetcher.getUUID(id);
                 uuidMap.put(name.toLowerCase(), uuid);
             }
+
             if (rateLimiting && i != requests - 1) {
                 Thread.sleep(100L);
             }
         }
+
         return uuidMap;
     }
 
@@ -62,12 +67,14 @@ public class UUIDFetcher implements Callable<Map<String, UUID>> {
 
     private static HttpURLConnection createConnection() throws Exception {
         URL url = new URL(PROFILE_URL);
+
         HttpURLConnection connection = (HttpURLConnection) url.openConnection();
         connection.setRequestMethod("POST");
         connection.setRequestProperty("Content-Type", "application/json");
         connection.setUseCaches(false);
         connection.setDoInput(true);
         connection.setDoOutput(true);
+
         return connection;
     }
 
@@ -79,6 +86,7 @@ public class UUIDFetcher implements Callable<Map<String, UUID>> {
         ByteBuffer byteBuffer = ByteBuffer.wrap(new byte[16]);
         byteBuffer.putLong(uuid.getMostSignificantBits());
         byteBuffer.putLong(uuid.getLeastSignificantBits());
+
         return byteBuffer.array();
     }
 
@@ -86,9 +94,11 @@ public class UUIDFetcher implements Callable<Map<String, UUID>> {
         if (array.length != 16) {
             throw new IllegalArgumentException("Illegal byte array length: " + array.length);
         }
+
         ByteBuffer byteBuffer = ByteBuffer.wrap(array);
         long mostSignificant = byteBuffer.getLong();
         long leastSignificant = byteBuffer.getLong();
+
         return new UUID(mostSignificant, leastSignificant);
     }
 

src/main/java/com/lishid/openinv/utils/UUIDUtil.java

@@ -10,7 +10,10 @@ import org.bukkit.Bukkit;
 import org.bukkit.OfflinePlayer;
 import org.bukkit.entity.Player;
 
-public class UUIDUtil {
+public final class UUIDUtil {
+
+    private UUIDUtil() {}
+
     private static Player getPlayer(String name) {
         Validate.notNull(name, "Name cannot be null");
 
@@ -22,10 +25,12 @@ public class UUIDUtil {
         for (Player player : players) {
             if (player.getName().toLowerCase().startsWith(lowerName)) {
                 int curDelta = player.getName().length() - lowerName.length();
+
                 if (curDelta < delta) {
                     found = player;
                     delta = curDelta;
                 }
+
                 if (curDelta == 0) break;
             }
         }
@@ -39,14 +44,19 @@ public class UUIDUtil {
         return offlinePlayer.hasPlayedBefore() ? offlinePlayer.getUniqueId() : null;
     }
 
+    /**
+     * Returns the UUID of a player by their name.
+     *
+     * @param name the name of the player to get the UUID of
+     * @return the player's UUID or null
+     */
     public static UUID getUUIDOf(String name) {
         UUID uuid;
         Player player = getPlayer(name);
 
         if (player != null) {
             uuid = player.getUniqueId();
-        }
+        } else {
-        else {
             if (Bukkit.getServer().getOnlineMode()) {
                 if (!Bukkit.getServer().isPrimaryThread()) {
                     UUIDFetcher fetcher = new UUIDFetcher(Arrays.asList(name));
@@ -55,8 +65,7 @@ public class UUIDUtil {
                     try {
                         response = fetcher.call();
                         uuid = response.get(name.toLowerCase());
-                    }
+                    } catch (Exception e) {
-                    catch (Exception e) {
                         uuid = getUUIDLocally(name);
                     }
                 } else {