I like change

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/listener/BukkitImageListener.java

@@ -103,7 +103,7 @@ public class BukkitImageListener implements Listener {
             if (event.getHand() == EquipmentSlot.OFF_HAND) return;
         } catch (NoSuchFieldError | NoSuchMethodError ignored) {}
 
-        List<Block> target = player.getLastTwoTargetBlocks((Set<Material>) null, 100);
+        List<Block> target = player.getLastTwoTargetBlocks(null, 100);
         if (target.isEmpty()) return;
 
         Block targetBlock = target.get(0);
@@ -151,7 +151,7 @@ public class BukkitImageListener implements Listener {
         if (generator == null) return null;
 
         ImageViewer viewer = generator.getImageViewer();
-        if (viewer == null || !(viewer instanceof BukkitImageViewer)) return null;
+        if (!(viewer instanceof BukkitImageViewer)) return null;
 
         BukkitImageViewer biv = (BukkitImageViewer) viewer;
         return biv;
@@ -185,12 +185,7 @@ public class BukkitImageListener implements Listener {
         if (frames == null || tool == null) {
             viewer.selectFrame(itemFrame);
             player.updateInventory();
-            TaskManager.IMP.laterAsync(new Runnable() {
+            TaskManager.IMP.laterAsync(() -> viewer.view(generator), 1);
-                @Override
-                public void run() {
-                    viewer.view(generator);
-                }
-            }, 1);
             return;
         }
 
@@ -250,9 +245,7 @@ public class BukkitImageListener implements Listener {
                     if (worldX < 0 || worldX > width || worldZ < 0 || worldZ > length) return;
 
 
-                    fp.runAction(new Runnable() {
+                    fp.runAction(() -> {
-                        @Override
-                        public void run() {
                         BlockVector3 wPos = BlockVector3.at(worldX, 0, worldZ);
                         viewer.refresh();
                         int topY = generator.getNearestSurfaceTerrainBlock(wPos.getBlockX(), wPos.getBlockZ(), 255, 0, 255);
@@ -269,7 +262,6 @@ public class BukkitImageListener implements Listener {
                         }
                         es.flushQueue();
                         viewer.view(generator);
-                        }
                     }, true, true);
 
 

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/listener/CFIPacketListener.java

@@ -90,12 +90,8 @@ public class CFIPacketListener implements Listener {
                     PlayerInventory inv = plr.getInventory();
                     ItemStack hand = enumHand == EnumWrappers.Hand.MAIN_HAND ? inv.getItemInMainHand() : inv.getItemInOffHand();
                     if (hand != null && hand.getType().isBlock()) {
-                        switch (hand.getType()) {
+                        Material type = hand.getType();
-                            case AIR:
+                        if (!type.isEmpty()) {
-                            case CAVE_AIR:
-                            case VOID_AIR:
-                                break;
-                            default:
                             BlockStateHolder block = BukkitAdapter.asBlockState(hand);
                             if (block != null) {
                                 gen.setBlock(pt, block);
@@ -201,9 +197,7 @@ public class CFIPacketListener implements Listener {
                         reply.getIntegers().write(0, id);
                         try {
                             protocolmanager.recieveClientPacket(player, reply);
-                        } catch (IllegalAccessException e) {
+                        } catch (IllegalAccessException | InvocationTargetException e) {
-                            e.printStackTrace();
-                        } catch (InvocationTargetException e) {
                             e.printStackTrace();
                         }
                         event.setCancelled(true);

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/util/VaultUtil.java

@@ -8,7 +8,8 @@ public class VaultUtil {
     public final Permission permission;
 
     public VaultUtil() {
-        final RegisteredServiceProvider<Permission> permissionProvider = Bukkit.getServer().getServicesManager().getRegistration(net.milkbowl.vault.permission.Permission.class);
+        final RegisteredServiceProvider<Permission> permissionProvider =
+            Bukkit.getServer().getServicesManager().getRegistration(Permission.class);
         if (permissionProvider != null) {
             this.permission = permissionProvider.getProvider();
         } else {

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/v0/BukkitChunk_All.java

@@ -104,7 +104,7 @@ public class BukkitChunk_All extends IntFaweChunk<Chunk, BukkitQueue_All> {
         int[][] sections = getCombinedIdArrays();
         final int bx = getX() << 4;
         final int bz = getZ() << 4;
-        boolean update = adapter != null ? adapter.isChunkInUse(chunk) : true;
+        boolean update = adapter == null || adapter.isChunkInUse(chunk);
         if (layer == -1) {
             if (adapter != null)
             {

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/v0/BukkitQueue_0.java

@@ -113,14 +113,15 @@ public abstract class BukkitQueue_0<CHUNK, CHUNKSECTIONS, SECTION> extends NMSMa
         WirePacket packet = null;
         int viewDistance = Bukkit.getViewDistance();
         try {
-            for (int i = 0; i < players.length; i++) {
+            for (FawePlayer fawePlayer : players) {
                 int cx = chunk.getX();
                 int cz = chunk.getZ();
 
-                Player player = ((BukkitPlayer) players[i]).parent;
+                Player player = ((BukkitPlayer) fawePlayer).parent;
                 Location loc = player.getLocation();
 
-                if (Math.abs((loc.getBlockX() >> 4) - cx) <= viewDistance && Math.abs((loc.getBlockZ() >> 4) - cz) <= viewDistance) {
+                if (Math.abs((loc.getBlockX() >> 4) - cx) <= viewDistance
+                    && Math.abs((loc.getBlockZ() >> 4) - cz) <= viewDistance) {
                     if (packet == null) {
                         byte[] data;
                         byte[] buffer = new byte[8192];

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/v0/BukkitQueue_All.java

@@ -181,9 +181,7 @@ public class BukkitQueue_All extends BukkitQueue_0<ChunkSnapshot, ChunkSnapshot,
 
                         if (load && unloaded != null) {
                             final ArrayDeque<Chunk> finalUnloaded = unloaded;
-                            TaskManager.IMP.async(new Runnable() {
+                            TaskManager.IMP.async(() -> {
-                                @Override
-                                public void run() {
                                 for (Chunk chunk : finalUnloaded) {
                                     int cx = chunk.getX();
                                     int cz = chunk.getZ();
@@ -194,7 +192,6 @@ public class BukkitQueue_All extends BukkitQueue_0<ChunkSnapshot, ChunkSnapshot,
                                     });
 
                                 }
-                                }
                             });
                             // load chunks
 

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/v0/ChunkListener.java

@@ -58,9 +58,7 @@ public abstract class ChunkListener implements Listener {
             Plugin plugin = Fawe.<FaweBukkit>imp().getPlugin();
             plm.registerEvents(this, plugin);
             try { plm.registerEvents(new ChunkListener_8Plus(this), plugin); } catch (Throwable ignore) {}
-            TaskManager.IMP.repeat(new Runnable() {
+            TaskManager.IMP.repeat(() -> {
-                @Override
-                public void run() {
                 rateLimit--;
                 physicsFreeze = false;
                 itemFreeze = false;
@@ -77,7 +75,6 @@ public abstract class ChunkListener implements Listener {
                     counter.put(key, badLimit);
                 }
                 badChunks.clear();
-                }
             }, Settings.IMP.TICK_LIMITER.INTERVAL);
         }
     }

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/wrapper/AsyncBlock.java

@@ -204,9 +204,10 @@ public class AsyncBlock implements Block {
     @Override
     public BlockFace getFace(Block block) {
         BlockFace[] directions = BlockFace.values();
-        for(int i = 0; i < directions.length; ++i) {
+        for (BlockFace face : directions) {
-            BlockFace face = directions[i];
+            if (this.getX() + face.getModX() == block.getX()
-            if(this.getX() + face.getModX() == block.getX() && this.getY() + face.getModY() == block.getY() && this.getZ() + face.getModZ() == block.getZ()) {
+                && this.getY() + face.getModY() == block.getY()
+                && this.getZ() + face.getModZ() == block.getZ()) {
                 return face;
             }
         }
@@ -272,14 +273,7 @@ public class AsyncBlock implements Block {
 
     @Override
     public boolean isEmpty() {
-        switch (getType()) {
+        return getType().isEmpty();
-            case AIR:
-            case CAVE_AIR:
-            case VOID_AIR:
-                return true;
-            default:
-                return false;
-        }
     }
 
     @Override

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/wrapper/AsyncChunk.java

@@ -29,7 +29,7 @@ public class AsyncChunk implements Chunk {
 
     @Override
     public boolean equals(Object obj) {
-        if (obj == null || !(obj instanceof Chunk)) {
+        if (!(obj instanceof Chunk)) {
             return false;
         }
         Chunk other = (Chunk) obj;
@@ -88,14 +88,14 @@ public class AsyncChunk implements Chunk {
             BukkitQueue_0 bq = (BukkitQueue_0) queue;
             if (world.isChunkLoaded(x, z)) {
                 long pair = MathMan.pairInt(x, z);
-                Long originalKeep = bq.keepLoaded.get(pair);
+                Long originalKeep = BukkitQueue_0.keepLoaded.get(pair);
-                bq.keepLoaded.put(pair, Long.MAX_VALUE);
+                BukkitQueue_0.keepLoaded.put(pair, Long.MAX_VALUE);
                 if (world.isChunkLoaded(x, z)) {
                     task.run();
                     if (originalKeep != null) {
-                        bq.keepLoaded.put(pair, originalKeep);
+                        BukkitQueue_0.keepLoaded.put(pair, originalKeep);
                     } else {
-                        bq.keepLoaded.remove(pair);
+                        BukkitQueue_0.keepLoaded.remove(pair);
                     }
                     return task.value;
                 }

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/wrapper/AsyncWorld.java

@@ -114,7 +114,7 @@ public class AsyncWorld extends DelegateFaweQueue implements World, HasFaweQueue
         this.parent = parent;
         this.queue = queue;
         if (queue instanceof BukkitQueue_0) {
-            this.adapter = (BukkitImplAdapter) ((BukkitQueue_0) queue).getAdapter();
+            this.adapter = BukkitQueue_0.getAdapter();
         } else {
             try {
                 this.adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
@@ -141,12 +141,7 @@ public class AsyncWorld extends DelegateFaweQueue implements World, HasFaweQueue
         if (queue != this.queue) {
             if (this.queue != null) {
                 final FaweQueue oldQueue = this.queue;
-                TaskManager.IMP.async(new Runnable() {
+                TaskManager.IMP.async(oldQueue::flush);
-                    @Override
-                    public void run() {
-                        oldQueue.flush();
-                    }
-                });
             }
             this.queue = queue;
         }
@@ -354,7 +349,7 @@ public class AsyncWorld extends DelegateFaweQueue implements World, HasFaweQueue
 
     @Override
     public boolean equals(Object obj) {
-        if (obj == null || !(obj instanceof World)) {
+        if (!(obj instanceof World)) {
             return false;
         }
         World other = (World) obj;
@@ -571,7 +566,7 @@ public class AsyncWorld extends DelegateFaweQueue implements World, HasFaweQueue
         return TaskManager.IMP.sync(new RunnableVal<Collection<T>>() {
             @Override
             public void run(Collection<T> value) {
-                this.value = (Collection<T>) parent.getEntitiesByClass(classes);
+                this.value = parent.getEntitiesByClass(classes);
             }
         });
     }
@@ -581,7 +576,7 @@ public class AsyncWorld extends DelegateFaweQueue implements World, HasFaweQueue
         return TaskManager.IMP.sync(new RunnableVal<Collection<T>>() {
             @Override
             public void run(Collection<T> value) {
-                this.value = (Collection<T>) parent.getEntitiesByClass(cls);
+                this.value = parent.getEntitiesByClass(cls);
             }
         });
     }
@@ -799,22 +794,12 @@ public class AsyncWorld extends DelegateFaweQueue implements World, HasFaweQueue
     @Override
     @Deprecated
     public FallingBlock spawnFallingBlock(Location location, Material material, byte data) throws IllegalArgumentException {
-        return TaskManager.IMP.sync(new Supplier<FallingBlock>() {
+        return TaskManager.IMP.sync(() -> parent.spawnFallingBlock(location, material, data));
-            @Override
-            public FallingBlock get() {
-                return parent.spawnFallingBlock(location, material, data);
-            }
-        });
     }
 
     @Override
     public FallingBlock spawnFallingBlock(Location location, BlockData blockData) throws IllegalArgumentException {
-        return TaskManager.IMP.sync(new Supplier<FallingBlock>() {
+        return TaskManager.IMP.sync(() -> parent.spawnFallingBlock(location, blockData));
-            @Override
-            public FallingBlock get() {
-                return parent.spawnFallingBlock(location, blockData);
-            }
-        });
     }
 
     @Override