Remove some unnecessary constructs

- Replace for and while loops with for iterators
 - Remove unused casts

src/main/java/dan200/computercraft/ComputerCraft.java

@@ -74,7 +74,10 @@ import java.io.IOException;
 import java.net.MalformedURLException;
 import java.net.URISyntaxException;
 import java.net.URL;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
 
 ///////////////
 // UNIVERSAL //
@@ -509,9 +512,8 @@ public class ComputerCraft
             }
         }
 
-        for( int i=0; i<permissionProviders.size(); ++i )
+        for( ITurtlePermissionProvider provider : permissionProviders )
         {
-            ITurtlePermissionProvider provider = permissionProviders.get( i );
             if( !provider.isBlockEnterable( world, pos ) )
             {
                 return false;
@@ -531,9 +533,8 @@ public class ComputerCraft
             }
         }
 
-        for( int i=0; i<permissionProviders.size(); ++i )
+        for( ITurtlePermissionProvider provider : permissionProviders )
         {
-            ITurtlePermissionProvider provider = permissionProviders.get( i );
             if( !provider.isBlockEditable( world, pos ) )
             {
                 return false;
@@ -581,12 +582,11 @@ public class ComputerCraft
     public static IPeripheral getPeripheralAt( World world, BlockPos pos, EnumFacing side )
     {
         // Try the handlers in order:
-        Iterator<IPeripheralProvider> it = peripheralProviders.iterator();
+        for( IPeripheralProvider peripheralProvider : peripheralProviders )
-        while( it.hasNext() )
         {
             try
             {
-                IPeripheralProvider handler = it.next();
+                IPeripheralProvider handler = peripheralProvider;
                 IPeripheral peripheral = handler.getPeripheral( world, pos, side );
                 if( peripheral != null )
                 {
@@ -620,12 +620,11 @@ public class ComputerCraft
 
         // Try the handlers in order:
         int combinedSignal = -1;
-        Iterator<IBundledRedstoneProvider> it = bundledRedstoneProviders.iterator();
+        for( IBundledRedstoneProvider bundledRedstoneProvider : bundledRedstoneProviders )
-        while( it.hasNext() )
         {
             try
             {
-                IBundledRedstoneProvider handler = it.next();
+                IBundledRedstoneProvider handler = bundledRedstoneProvider;
                 int signal = handler.getBundledRedstoneOutput( world, pos, side );
                 if( signal >= 0 )
                 {
@@ -652,12 +651,11 @@ public class ComputerCraft
         if( stack != null )
         {
             // Try the handlers in order:
-            Iterator<IMediaProvider> it = mediaProviders.iterator();
+            for( IMediaProvider mediaProvider : mediaProviders )
-            while( it.hasNext() )
             {
                 try
                 {
-                    IMediaProvider handler = it.next();
+                    IMediaProvider handler = mediaProvider;
                     IMedia media = handler.getMedia( stack );
                     if( media != null )
                     {
@@ -760,11 +758,11 @@ public class ComputerCraft
         if( resourcePackDir.exists() && resourcePackDir.isDirectory() )
         {
             String[] resourcePacks = resourcePackDir.list();
-            for( int i=0; i<resourcePacks.length; ++i )
+            for( String resourcePack1 : resourcePacks )
             {
                 try
                 {
-                    File resourcePack = new File( resourcePackDir, resourcePacks[i] );
+                    File resourcePack = new File( resourcePackDir, resourcePack1 );
                     if( !resourcePack.isDirectory() )
                     {
                         // Mount a resource pack from a jar

src/main/java/dan200/computercraft/client/gui/GuiPrintout.java

@@ -14,7 +14,6 @@ import net.minecraft.client.gui.inventory.GuiContainer;
 import net.minecraft.client.renderer.GlStateManager;
 import net.minecraft.util.ResourceLocation;
 import org.lwjgl.input.Mouse;
-import org.lwjgl.opengl.GL11;
 
 import java.io.IOException;
 

src/main/java/dan200/computercraft/client/gui/widgets/Widget.java

@@ -11,13 +11,10 @@ import net.minecraft.client.audio.PositionedSoundRecord;
 import net.minecraft.client.gui.FontRenderer;
 import net.minecraft.client.gui.Gui;
 import net.minecraft.client.renderer.*;
-import net.minecraft.client.renderer.RenderItem;
 import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
 import net.minecraft.init.SoundEvents;
 import net.minecraft.item.ItemStack;
-import net.minecraft.util.ResourceLocation;
 import org.lwjgl.opengl.GL11;
-import org.lwjgl.opengl.GL12;
 
 public abstract class Widget extends Gui
 {
@@ -269,9 +266,8 @@ public abstract class Widget extends Gui
         FontRenderer fontRenderer = mc.fontRendererObj;
 
         int width = 0;
-        for( int i=0; i<lines.length; ++i )
+        for( String line : lines )
         {
-            String line = lines[i];
             width = Math.max( fontRenderer.getStringWidth( line ), width );
         }
         int startX = x + 12;

src/main/java/dan200/computercraft/client/gui/widgets/WidgetContainer.java

@@ -48,9 +48,9 @@ public class WidgetContainer extends Widget
 	@Override
 	public void update()
 	{
-		for( int i=0; i<m_widgets.size(); ++i )
+        for( Widget m_widget : m_widgets )
         {
-			m_widgets.get( i ).update();
+            m_widget.update();
         }
 		if( m_modalWidget != null )
 		{
@@ -61,9 +61,8 @@ public class WidgetContainer extends Widget
 	@Override
 	public void draw( Minecraft mc, int xOrigin, int yOrigin, int mouseX, int mouseY )
 	{
-		for( int i=0; i<m_widgets.size(); ++i )
+        for( Widget widget : m_widgets )
         {
-			Widget widget = m_widgets.get( i );
             if( widget.isVisible() )
             {
                 widget.draw(
@@ -102,9 +101,8 @@ public class WidgetContainer extends Widget
 	@Override
 	public void drawForeground( Minecraft mc, int xOrigin, int yOrigin, int mouseX, int mouseY )
 	{
-		for( int i=0; i<m_widgets.size(); ++i )
+        for( Widget widget : m_widgets )
         {
-			Widget widget = m_widgets.get( i );
             if( widget.isVisible() )
             {
                 widget.drawForeground(
@@ -148,9 +146,8 @@ public class WidgetContainer extends Widget
 		pos.y -= getYPosition();
 		if( m_modalWidget == null )
 		{
-			for( int i = 0; i < m_widgets.size(); ++i )
+            for( Widget widget : m_widgets )
             {
-				Widget widget = m_widgets.get( i );
                 if( widget.isVisible() )
                 {
                     widget.modifyMousePosition( pos );
@@ -173,9 +170,8 @@ public class WidgetContainer extends Widget
 	{
 		if( m_modalWidget == null )
 		{
-			for( int i = 0; i < m_widgets.size(); ++i )
+            for( Widget widget : m_widgets )
             {
-				Widget widget = m_widgets.get( i );
                 if( widget.isVisible() )
                 {
                     if( widget.suppressItemTooltips(
@@ -211,9 +207,8 @@ public class WidgetContainer extends Widget
 	{
 		if( m_modalWidget == null )
 		{
-			for( int i = 0; i < m_widgets.size(); ++i )
+            for( Widget widget : m_widgets )
             {
-				Widget widget = m_widgets.get( i );
                 if( widget.isVisible() )
                 {
                     if( widget.suppressKeyPress( c, k ) )
@@ -241,9 +236,8 @@ public class WidgetContainer extends Widget
 	{
 		if( m_modalWidget == null )
 		{
-			for( int i = 0; i < m_widgets.size(); ++i )
+            for( Widget widget : m_widgets )
             {
-				Widget widget = m_widgets.get( i );
                 if( widget.isVisible() )
                 {
                     widget.handleMouseInput(
@@ -270,9 +264,8 @@ public class WidgetContainer extends Widget
 	{
 		if( m_modalWidget == null )
 		{
-			for( int i = 0; i < m_widgets.size(); ++i )
+            for( Widget widget : m_widgets )
             {
-				Widget widget = m_widgets.get( i );
                 if( widget.isVisible() )
                 {
                     widget.handleKeyboardInput();
@@ -293,9 +286,8 @@ public class WidgetContainer extends Widget
 	{
 		if( m_modalWidget == null )
 		{
-			for( int i = 0; i < m_widgets.size(); ++i )
+            for( Widget widget : m_widgets )
             {
-				Widget widget = m_widgets.get( i );
                 if( widget.isVisible() )
                 {
                     widget.mouseClicked(
@@ -324,9 +316,8 @@ public class WidgetContainer extends Widget
 	{
 		if( m_modalWidget == null )
 		{
-			for( int i = 0; i < m_widgets.size(); ++i )
+            for( Widget widget : m_widgets )
             {
-				Widget widget = m_widgets.get( i );
                 if( widget.isVisible() )
                 {
                     widget.keyTyped( c, k );

src/main/java/dan200/computercraft/client/proxy/ComputerCraftProxyClient.java

@@ -49,7 +49,6 @@ import net.minecraftforge.client.event.RenderPlayerEvent;
 import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.fml.client.FMLClientHandler;
 import net.minecraftforge.fml.client.registry.ClientRegistry;
-import net.minecraftforge.fml.common.FMLCommonHandler;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 import net.minecraftforge.fml.common.gameevent.TickEvent;
 import net.minecraftforge.fml.relauncher.Side;
@@ -405,7 +404,7 @@ public class ComputerCraftProxyClient extends ComputerCraftProxyCommon
                 {
                     ComputerCraft.clientComputerRegistry.add( instanceID, new ClientComputer( instanceID ) );
                 }
-                ComputerCraft.clientComputerRegistry.get( instanceID ).handlePacket( packet, (EntityPlayer) player );
+                ComputerCraft.clientComputerRegistry.get( instanceID ).handlePacket( packet, player );
                 break;
             }
             case ComputerCraftPacket.ComputerDeleted:

src/main/java/dan200/computercraft/client/render/TurtleMultiModel.java

@@ -139,9 +139,8 @@ public class TurtleMultiModel implements IBakedModel
         else
         {
             List<BakedQuad> output = new ArrayList<BakedQuad>( input.size() );
-            for( int i=0; i<input.size(); ++i )
+            for( BakedQuad quad : input )
             {
-                BakedQuad quad = input.get( i );
                 output.add( transformQuad( quad, transform ) );
             }
             return output;

src/main/java/dan200/computercraft/client/render/TurtleSmartItemModel.java

@@ -26,8 +26,6 @@ import net.minecraft.item.ItemStack;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.world.World;
-import net.minecraftforge.client.model.IModel;
-import net.minecraftforge.client.model.ISmartVariant;
 import org.apache.commons.lang3.tuple.Pair;
 
 import javax.annotation.Nonnull;

src/main/java/dan200/computercraft/core/apis/HTTPAPI.java

@@ -157,9 +157,8 @@ public class HTTPAPI implements ILuaAPI
     {
         synchronized( m_httpRequests )
         {
-            Iterator<HTTPRequest> it = m_httpRequests.iterator();
+            for( HTTPRequest r : m_httpRequests )
-            while( it.hasNext() ) {
+            {
-                HTTPRequest r = it.next();
                 r.cancel();
             }
             m_httpRequests.clear();

src/main/java/dan200/computercraft/core/apis/HTTPRequest.java

@@ -19,6 +19,8 @@ import java.util.Map;
 import java.util.regex.Pattern;
 
 class HTTPRequestException extends Exception {
+    private static final long serialVersionUID = 7591208619422744652L;
+
     public HTTPRequestException( String s ) {
         super( s );
     }
@@ -49,9 +51,8 @@ public class HTTPRequest
         boolean allowed = false;
         String whitelistString = ComputerCraft.http_whitelist;
         String[] allowedURLs = whitelistString.split( ";" );
-        for( int i=0; i<allowedURLs.length; ++i )
+        for( String allowedURL : allowedURLs )
         {
-            String allowedURL = allowedURLs[i];
             Pattern allowedURLPattern = Pattern.compile( "^\\Q" + allowedURL.replaceAll( "\\*", "\\\\E.*\\\\Q" ) + "\\E$" );
             if( allowedURLPattern.matcher( url.getHost() ).matches() )
             {
@@ -274,7 +275,7 @@ public class HTTPRequest
     
     public BufferedReader getContents()
     {
-        String result = null;
+        String result;
         synchronized(m_lock) {
             result = m_result;
         }

src/main/java/dan200/computercraft/core/apis/PeripheralAPI.java

@@ -89,9 +89,9 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
             m_attached = false;
             
             // Unmount everything the detach function forgot to do
-            Iterator<String> it = m_mounts.iterator();
+            for( String m_mount : m_mounts )
-            while( it.hasNext() ) {
+            {
-                m_fileSystem.unmount( it.next() );
+                m_fileSystem.unmount( m_mount );
             }
             m_mounts.clear();
         }
@@ -133,7 +133,7 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
             }
             
             // Mount the location
-            String location = null;
+            String location;
             synchronized( m_fileSystem )
             {
                 location = findFreeLocation( desiredLoc );
@@ -168,7 +168,7 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
             }
             
             // Mount the location
-            String location = null;
+            String location;
             synchronized( m_fileSystem )
             {
                 location = findFreeLocation( desiredLoc );
@@ -470,7 +470,7 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
                 int side = parseSide( args );
                 if( side >= 0 )
                 {
-                    PeripheralWrapper p = null;
+                    PeripheralWrapper p;
                     synchronized( m_peripherals )
                     {
                         p = m_peripherals[ side ];

src/main/java/dan200/computercraft/core/apis/RedstoneAPI.java

@@ -91,7 +91,7 @@ public class RedstoneAPI implements ILuaAPI
                     throw new LuaException( "Expected string, boolean" );
                 }
                 int side = parseSide( args );
-                boolean output = ((Boolean)args[1]).booleanValue();
+                boolean output = (Boolean) args[ 1 ];
                 m_environment.setOutput( side, output ? 15 : 0 );
                 return null;
             }

src/main/java/dan200/computercraft/core/apis/TermAPI.java

@@ -163,7 +163,7 @@ public class TermAPI implements ILuaAPI
                 {
                     throw new LuaException( "Expected boolean" );
                 }
-                boolean b = ((Boolean)args[0]).booleanValue();
+                boolean b = (Boolean) args[ 0 ];
                 synchronized( m_terminal )
                 {
                     m_terminal.setCursorBlink( b );

src/main/java/dan200/computercraft/core/computer/Computer.java

@@ -21,7 +21,6 @@ import dan200.computercraft.core.terminal.Terminal;
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.ArrayList;
-import java.util.Iterator;
 import java.util.List;
 
 public class Computer
@@ -370,10 +369,8 @@ public class Computer
                 // Advance our APIs
                 synchronized( m_apis )
                 {
-                    Iterator<ILuaAPI> it = m_apis.iterator();
+                    for(ILuaAPI api : m_apis)
-                    while( it.hasNext() )
                     {
-                        ILuaAPI api = it.next();
                         api.advance( _dt );
                     }
                 }
@@ -628,10 +625,8 @@ public class Computer
         ILuaMachine machine = new LuaJLuaMachine( this );
         
         // Add the APIs
-        Iterator<ILuaAPI> it = m_apis.iterator();
+        for(ILuaAPI api : m_apis)
-        while( it.hasNext() )
         {
-            ILuaAPI api = it.next();
             machine.addAPI( api );
             api.startup();
         }
@@ -794,10 +789,8 @@ public class Computer
                     // Shutdown our APIs
                     synchronized( m_apis )
                     {
-                        Iterator<ILuaAPI> it = m_apis.iterator();
+                        for(ILuaAPI api : m_apis)
-                        while( it.hasNext() )
                         {
-                            ILuaAPI api = it.next();
                             api.shutdown();
                         }
                     }

src/main/java/dan200/computercraft/core/filesystem/ComboMount.java

@@ -84,9 +84,8 @@ public class ComboMount implements IMount
         {
             // We found multiple directories, so filter for duplicates
             Set<String> seen = new HashSet<String>();
-            for( int i=0; i<foundFiles.size(); ++i )
+            for(String file : foundFiles)
             {
-                String file = foundFiles.get(i);
                 if( seen.add( file ) )
                 {
                     contents.add( file );

src/main/java/dan200/computercraft/core/filesystem/FileMount.java

@@ -261,9 +261,9 @@ public class FileMount implements IWritableMount
         if( file.isDirectory() )
         {
             String[] children = file.list();
-            for( int i=0; i<children.length; i++ )
+            for( String aChildren : children )
             {
-                deleteRecursively( new File( file, children[i] ) );
+                deleteRecursively( new File( file, aChildren ) );
             }
         }
         
@@ -376,9 +376,9 @@ public class FileMount implements IWritableMount
         {
             long size = MINIMUM_FILE_SIZE;
             String[] contents = file.list();
-            for( int i=0; i<contents.length; ++i )
+            for( String content : contents )
             {
-                size += measureUsedSpace( new File( file, contents[i] ) );
+                size += measureUsedSpace( new File( file, content ) );
             }
             return size;
         }

src/main/java/dan200/computercraft/core/filesystem/FileSystem.java

@@ -327,7 +327,7 @@ public class FileSystem
             throw new NullPointerException();
         }
         location = sanitizePath( location );
-        if( location.indexOf( ".." ) != -1 ) {
+        if( location.contains( ".." ) ) {
             throw new FileSystemException( "Cannot mount below the root" );
         }                    
         mount( new MountWrapper( label, location, mount ) );
@@ -427,10 +427,10 @@ public class FileSystem
         mount.list( path, list );
         
         // Add any mounts that are mounted at this location
-        Iterator<MountWrapper> it = m_mounts.values().iterator();
+        for( MountWrapper otherMount : m_mounts.values() )
-        while( it.hasNext() ) {
+        {
-            MountWrapper otherMount = it.next();
+            if( getDirectory( otherMount.getLocation() ).equals( path ) )
-            if( getDirectory( otherMount.getLocation() ).equals( path ) ) {
+            {
                 list.add( getName( otherMount.getLocation() ) );
             }
         }
@@ -445,9 +445,8 @@ public class FileSystem
     private void findIn( String dir, List<String> matches, Pattern wildPattern ) throws FileSystemException
     {
         String[] list = list( dir );
-        for( int i=0; i<list.length; ++i )
+        for( String entry : list )
         {
-            String entry = list[i];
             String entryPath = dir.isEmpty() ? entry : (dir + "/" + entry);
             if( wildPattern.matcher( entryPath ).matches() )
             {
@@ -910,7 +909,7 @@ public class FileSystem
             char c = path.charAt(i);
             if( c >= 32 && Arrays.binarySearch( specialChars, c ) < 0 && (allowWildcards || c != '*') )
             {
-                cleanName.append((char)c);
+                cleanName.append( c );
             }
         }
         path = cleanName.toString();
@@ -918,30 +917,42 @@ public class FileSystem
         // Collapse the string into its component parts, removing ..'s
         String[] parts = path.split("/");
         Stack<String> outputParts = new Stack<String>();
-        for( int n=0; n<parts.length; ++n ) {
+        for( String part : parts )
-            String part = parts[n];
+        {
-            if( part.length() == 0 || part.equals(".") )
+            if( part.length() == 0 || part.equals( "." ) )
             {
                 // . is redundant
                 continue;
-            } else if( part.equals("..") || part.equals( "..." ) ) {
+            }
+            else if( part.equals( ".." ) || part.equals( "..." ) )
+            {
                 // .. or ... can cancel out the last folder entered
-                if( !outputParts.empty() ) {
+                if( !outputParts.empty() )
+                {
                     String top = outputParts.peek();
-                    if( !top.equals("..") ) {
+                    if( !top.equals( ".." ) )
+                    {
                         outputParts.pop();
-                    } else {
-                        outputParts.push("..");
                     }
-                } else {
+                    else
-                    outputParts.push("..");
+                    {
+                        outputParts.push( ".." );
                     }
-            } else if (part.length() >= 255) {
+                }
+                else
+                {
+                    outputParts.push( ".." );
+                }
+            }
+            else if( part.length() >= 255 )
+            {
                 // If part length > 255 and it is the last part
-                outputParts.push( part.substring(0, 255) );
+                outputParts.push( part.substring( 0, 255 ) );
-            } else {
+            }
+            else
+            {
                 // Anything else we add to the stack
-                outputParts.push(part);
+                outputParts.push( part );
             }
         }
         

src/main/java/dan200/computercraft/core/filesystem/FileSystemException.java

@@ -7,6 +7,8 @@
 package dan200.computercraft.core.filesystem;
 
 public class FileSystemException extends Exception {
+    private static final long serialVersionUID = -2500631644868104029L;
+
     FileSystemException( String s ) {
         super( s );
     }

src/main/java/dan200/computercraft/core/filesystem/JarMount.java

@@ -54,10 +54,7 @@ public class JarMount implements IMount
         
         public void list( List<String> contents )
         {
-            for( String child : m_children.keySet() )
+            contents.addAll( m_children.keySet() );
-            {
-                contents.add( child );
-            }
         }
                 
         public void insertChild( FileInZip child )

src/main/java/dan200/computercraft/core/lua/LuaJLuaMachine.java

@@ -25,7 +25,6 @@ import javax.annotation.Nonnull;
 import java.io.*;
 import java.util.HashMap;
 import java.util.IdentityHashMap;
-import java.util.Iterator;
 import java.util.Map;
 
 public class LuaJLuaMachine implements ILuaMachine
@@ -129,9 +128,9 @@ public class LuaJLuaMachine implements ILuaMachine
         // Add the methods of an API to the global table
         LuaTable table = wrapLuaObject( api );
         String[] names = api.getNames();
-        for( int i=0; i<names.length; ++i )
+        for( String name : names )
         {
-            m_globals.set( names[i], table );
+            m_globals.set( name, table );
         }
     }
     
@@ -147,7 +146,7 @@ public class LuaJLuaMachine implements ILuaMachine
         try
         {
             // Read the whole bios into a string
-            String biosText = null;
+            String biosText;
             try
             {
                 InputStreamReader isr;
@@ -336,7 +335,7 @@ public class LuaJLuaMachine implements ILuaMachine
                     {
                         tryAbort();
                         Object[] arguments = toObjects( _args, 1 );
-                        Object[] results = null;
+                        Object[] results;
                         try
                         {
                             results = apiObject.callMethod( new ILuaContext() {
@@ -399,10 +398,7 @@ public class LuaJLuaMachine implements ILuaMachine
                                                     Object[] eventArguments = new Object[ results.length + 2 ];
                                                     eventArguments[ 0 ] = taskID;
                                                     eventArguments[ 1 ] = true;
-                                                    for( int i = 0; i < results.length; ++i )
+                                                    System.arraycopy( results, 0, eventArguments, 2, results.length );
-                                                    {
-                                                        eventArguments[ i + 2 ] = results[ i ];
-                                                    }
                                                     m_computer.queueEvent( "task_complete", eventArguments );
                                                 }
                                                 else
@@ -452,10 +448,7 @@ public class LuaJLuaMachine implements ILuaMachine
                                                 if( (Boolean)response[ 2 ] )
                                                 {
                                                     // Extract the return values from the event and return them
-                                                    for( int i = 0; i < returnValues.length; ++i )
+                                                    System.arraycopy( response, 3, returnValues, 0, returnValues.length );
-                                                    {
-                                                        returnValues[ i ] = response[ i + 3 ];
-                                                    }
                                                     return returnValues;
                                                 }
                                                 else
@@ -510,7 +503,7 @@ public class LuaJLuaMachine implements ILuaMachine
         }
         else if( object instanceof Boolean )
         {
-            boolean b = ((Boolean)object).booleanValue();
+            boolean b = (Boolean) object;
             return LuaValue.valueOf( b );
         }
         else if( object instanceof String )
@@ -538,10 +531,9 @@ public class LuaJLuaMachine implements ILuaMachine
                 m_valuesInProgress.put( object, table );
 
                 // Convert all keys
-                Iterator it = ((Map)object).entrySet().iterator();
+                for( Object o : ((Map) object).entrySet() )
-                while( it.hasNext() )
                 {
-                    Map.Entry pair = (Map.Entry)it.next();
+                    Map.Entry pair = (Map.Entry) o;
                     LuaValue key = toValue( pair.getKey() );
                     LuaValue value = toValue( pair.getValue() );
                     if( !key.isnil() && !value.isnil() )

src/main/java/dan200/computercraft/server/proxy/ComputerCraftProxyServer.java

@@ -6,7 +6,6 @@
 
 package dan200.computercraft.server.proxy;
 
-import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.shared.computer.blocks.TileComputer;
 import dan200.computercraft.shared.peripheral.diskdrive.TileDiskDrive;
 import dan200.computercraft.shared.peripheral.printer.TilePrinter;

src/main/java/dan200/computercraft/shared/common/BlockGeneric.java

@@ -10,7 +10,6 @@ import net.minecraft.block.Block;
 import net.minecraft.block.ITileEntityProvider;
 import net.minecraft.block.material.Material;
 import net.minecraft.block.state.IBlockState;
-import net.minecraft.enchantment.EnchantmentHelper;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.player.EntityPlayer;
@@ -27,7 +26,6 @@ import net.minecraft.world.World;
 
 import javax.annotation.Nonnull;
 import java.util.ArrayList;
-import java.util.Iterator;
 import java.util.List;
 
 public abstract class BlockGeneric extends Block implements
@@ -97,10 +95,8 @@ public abstract class BlockGeneric extends Block implements
         // Drop items
         if( drops.size() > 0 )
         {
-            Iterator<ItemStack> it = drops.iterator();
+            for (ItemStack item : drops)
-            while( it.hasNext() )
             {
-                ItemStack item = it.next();
                 dropItem( world, pos, item );
             }
         }
@@ -272,10 +268,8 @@ public abstract class BlockGeneric extends Block implements
             // Add collision bounds to list
             if( collision.size() > 0 )
             {
-                Iterator<AxisAlignedBB> it = collision.iterator();
+                for (AxisAlignedBB localBounds : collision)
-                while( it.hasNext() )
                 {
-                    AxisAlignedBB localBounds = it.next();
                     addCollisionBoxToList( pos, bigBox, list, localBounds );
                 }
             }

src/main/java/dan200/computercraft/shared/common/TileGeneric.java

@@ -15,7 +15,6 @@ import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.network.NetworkManager;
-import net.minecraft.network.Packet;
 import net.minecraft.network.play.server.SPacketUpdateTileEntity;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.math.AxisAlignedBB;

src/main/java/dan200/computercraft/shared/computer/apis/CommandAPI.java

@@ -21,7 +21,6 @@ import net.minecraft.command.ICommandManager;
 import net.minecraft.command.ICommandSender;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.ResourceLocation;
 import net.minecraft.world.World;
 
 import javax.annotation.Nonnull;
@@ -113,7 +112,7 @@ public class CommandAPI implements ILuaAPI
         // Get the details of the block
         IBlockState state = world.getBlockState( pos );
         Block block = state.getBlock();
-        String name = ((ResourceLocation)Block.REGISTRY.getNameForObject( block )).toString();
+        String name = Block.REGISTRY.getNameForObject( block ).toString();
         int metadata = block.getMetaFromState( state );
 
         Map<Object, Object> table = new HashMap<Object, Object>();

src/main/java/dan200/computercraft/shared/computer/blocks/BlockCommandComputer.java

@@ -9,7 +9,6 @@ package dan200.computercraft.shared.computer.blocks;
 import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.shared.computer.core.ComputerFamily;
 import dan200.computercraft.shared.computer.core.IComputer;
-import dan200.computercraft.shared.peripheral.common.TilePeripheralBase;
 import dan200.computercraft.shared.util.DirectionUtil;
 import net.minecraft.block.material.Material;
 import net.minecraft.block.properties.IProperty;
@@ -34,7 +33,7 @@ public class BlockCommandComputer extends BlockComputerBase
     public static class Properties
     {
         public static final PropertyDirection FACING = PropertyDirection.create("facing", EnumFacing.Plane.HORIZONTAL);
-        public static final PropertyEnum<ComputerState> STATE = PropertyEnum.<ComputerState>create("state", ComputerState.class);
+        public static final PropertyEnum<ComputerState> STATE = PropertyEnum.create("state", ComputerState.class);
     }
 
     // Members
@@ -77,7 +76,7 @@ public class BlockCommandComputer extends BlockComputerBase
     @Override
     public int getMetaFromState( IBlockState state )
     {
-        return ((EnumFacing)state.getValue( Properties.FACING )).getIndex();
+        return state.getValue( Properties.FACING ).getIndex();
     }
 
     @Nonnull

src/main/java/dan200/computercraft/shared/computer/blocks/BlockComputer.java

@@ -36,7 +36,7 @@ public class BlockComputer extends BlockComputerBase
     {
         public static final PropertyDirection FACING = PropertyDirection.create("facing", EnumFacing.Plane.HORIZONTAL);
         public static final PropertyBool ADVANCED = PropertyBool.create("advanced");
-        public static final PropertyEnum<ComputerState> STATE = PropertyEnum.<ComputerState>create("state", ComputerState.class);
+        public static final PropertyEnum<ComputerState> STATE = PropertyEnum.create("state", ComputerState.class);
     }
 
     // Members
@@ -90,8 +90,8 @@ public class BlockComputer extends BlockComputerBase
     @Override
     public int getMetaFromState( IBlockState state )
     {
-        int meta = ((EnumFacing)state.getValue( Properties.FACING )).getIndex();
+        int meta = state.getValue( Properties.FACING ).getIndex();
-        if( (Boolean)state.getValue( Properties.ADVANCED ) )
+        if( state.getValue( Properties.ADVANCED ) )
         {
             meta += 8;
         }
@@ -153,7 +153,7 @@ public class BlockComputer extends BlockComputerBase
     @Override
     public ComputerFamily getFamily( IBlockState state )
     {
-        if( (Boolean)state.getValue( Properties.ADVANCED ) ) {
+        if( state.getValue( Properties.ADVANCED ) ) {
             return ComputerFamily.Advanced;
         } else {
             return ComputerFamily.Normal;

src/main/java/dan200/computercraft/shared/computer/blocks/TileCommandComputer.java

@@ -22,7 +22,6 @@ import net.minecraft.util.*;
 import net.minecraft.world.World;
 
 import javax.annotation.Nonnull;
-import javax.annotation.Nullable;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -147,7 +146,7 @@ public class TileCommandComputer extends TileComputer
     public EnumFacing getDirection()
     {
         IBlockState state = getBlockState();
-        return (EnumFacing)state.getValue( BlockCommandComputer.Properties.FACING );
+        return state.getValue( BlockCommandComputer.Properties.FACING );
     }
 
     @Override

src/main/java/dan200/computercraft/shared/computer/blocks/TileComputer.java

@@ -87,7 +87,7 @@ public class TileComputer extends TileComputerBase
     public EnumFacing getDirection()
     {
         IBlockState state = getBlockState();
-        return (EnumFacing)state.getValue( BlockComputer.Properties.FACING );
+        return state.getValue( BlockComputer.Properties.FACING );
     }
 
     @Override

src/main/java/dan200/computercraft/shared/computer/items/ItemComputerBase.java

@@ -10,7 +10,6 @@ import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.api.filesystem.IMount;
 import dan200.computercraft.api.media.IMedia;
 import dan200.computercraft.shared.computer.core.ComputerFamily;
-import dan200.computercraft.shared.computer.core.ServerComputer;
 import net.minecraft.block.Block;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.ItemBlock;

src/main/java/dan200/computercraft/shared/media/items/ItemTreasureDisk.java

@@ -23,10 +23,7 @@ import net.minecraft.world.World;
 
 import javax.annotation.Nonnull;
 import java.io.IOException;
-import java.util.ArrayList;
-import java.util.Collections;
 import java.util.List;
-import java.util.Random;
 
 public class ItemTreasureDisk extends Item
     implements IMedia

src/main/java/dan200/computercraft/shared/media/recipes/DiskRecipe.java

@@ -85,7 +85,7 @@ public class DiskRecipe implements IRecipe
         int[] var3 = new int[3];
         int var4 = 0;
         int var5 = 0;
-        ItemDiskLegacy var6 = null;
+        ItemDiskLegacy var6;
         int var7;
         int var9;
         float var10;

src/main/java/dan200/computercraft/shared/peripheral/common/BlockCable.java

@@ -29,7 +29,7 @@ public class BlockCable extends BlockPeripheralBase
 
     public static class Properties
     {
-        public static final PropertyEnum<BlockCableModemVariant> MODEM = PropertyEnum.<BlockCableModemVariant>create( "modem", BlockCableModemVariant.class );
+        public static final PropertyEnum<BlockCableModemVariant> MODEM = PropertyEnum.create( "modem", BlockCableModemVariant.class );
         public static final PropertyBool CABLE = PropertyBool.create( "cable" );
         public static final PropertyBool NORTH = PropertyBool.create( "north" );
         public static final PropertyBool SOUTH = PropertyBool.create( "south" );
@@ -118,8 +118,8 @@ public class BlockCable extends BlockPeripheralBase
     public int getMetaFromState( IBlockState state )
     {
         int meta = 0;
-        boolean cable = (Boolean)state.getValue( Properties.CABLE );
+        boolean cable = state.getValue( Properties.CABLE );
-        BlockCableModemVariant modem = (BlockCableModemVariant)state.getValue( Properties.MODEM );
+        BlockCableModemVariant modem = state.getValue( Properties.MODEM );
         if( cable && modem != BlockCableModemVariant.None )
         {
             meta = 6 + modem.getFacing().getIndex();
@@ -164,11 +164,11 @@ public class BlockCable extends BlockPeripheralBase
 
     private boolean doesConnect( IBlockState state, IBlockAccess world, BlockPos pos, EnumFacing dir )
     {
-        if( !((Boolean)state.getValue( Properties.CABLE )) )
+        if( !state.getValue( Properties.CABLE ) )
         {
             return false;
         }
-        else if( ((BlockCableModemVariant)state.getValue( Properties.MODEM )).getFacing() == dir )
+        else if( state.getValue( Properties.MODEM ).getFacing() == dir )
         {
             return true;
         }
@@ -201,7 +201,7 @@ public class BlockCable extends BlockPeripheralBase
             anim = 0;
         }
 
-        BlockCableModemVariant modem = ((BlockCableModemVariant)state.getValue( Properties.MODEM ));
+        BlockCableModemVariant modem = state.getValue( Properties.MODEM );
         if( modem != BlockCableModemVariant.None )
         {
             modem = BlockCableModemVariant.values()[
@@ -228,8 +228,8 @@ public class BlockCable extends BlockPeripheralBase
     @Override
     public PeripheralType getPeripheralType( IBlockState state )
     {
-        boolean cable = (Boolean)state.getValue( Properties.CABLE );
+        boolean cable = state.getValue( Properties.CABLE );
-        BlockCableModemVariant modem = (BlockCableModemVariant)state.getValue( Properties.MODEM );
+        BlockCableModemVariant modem = state.getValue( Properties.MODEM );
         if( cable && modem != BlockCableModemVariant.None )
         {
             return PeripheralType.WiredModemWithCable;

src/main/java/dan200/computercraft/shared/peripheral/common/BlockPeripheral.java

@@ -37,7 +37,7 @@ public class BlockPeripheral extends BlockPeripheralBase
     public static class Properties
     {
         public static final PropertyDirection FACING = PropertyDirection.create( "facing", EnumFacing.Plane.HORIZONTAL );
-        public static final PropertyEnum<BlockPeripheralVariant> VARIANT = PropertyEnum.<BlockPeripheralVariant>create( "variant", BlockPeripheralVariant.class );
+        public static final PropertyEnum<BlockPeripheralVariant> VARIANT = PropertyEnum.create( "variant", BlockPeripheralVariant.class );
     }
 
     public BlockPeripheral()
@@ -115,12 +115,12 @@ public class BlockPeripheral extends BlockPeripheralBase
     public int getMetaFromState( IBlockState state )
     {
         int meta = 0;
-        BlockPeripheralVariant variant = (BlockPeripheralVariant)state.getValue( Properties.VARIANT );
+        BlockPeripheralVariant variant = state.getValue( Properties.VARIANT );
         switch( variant.getPeripheralType() )
         {
             case DiskDrive:
             {
-                EnumFacing dir = (EnumFacing)state.getValue( Properties.FACING );
+                EnumFacing dir = state.getValue( Properties.FACING );
                 if( dir.getAxis() == EnumFacing.Axis.Y ) {
                     dir = EnumFacing.NORTH;
                 }
@@ -145,7 +145,7 @@ public class BlockPeripheral extends BlockPeripheralBase
                     }
                     default:
                     {
-                        EnumFacing dir = (EnumFacing)state.getValue( Properties.FACING );
+                        EnumFacing dir = state.getValue( Properties.FACING );
                         meta = dir.getIndex() + 4;
                         break;
                     }
@@ -187,8 +187,8 @@ public class BlockPeripheral extends BlockPeripheralBase
         else
         {
             anim = 0;
-            dir = (EnumFacing)state.getValue( Properties.FACING );
+            dir = state.getValue( Properties.FACING );
-            switch( (BlockPeripheralVariant)state.getValue( BlockPeripheral.Properties.VARIANT ) )
+            switch( state.getValue( Properties.VARIANT ) )
             {
                 case WirelessModemDownOff:
                 case WirelessModemDownOn:
@@ -503,7 +503,7 @@ public class BlockPeripheral extends BlockPeripheralBase
     @Override
     public PeripheralType getPeripheralType( IBlockState state )
     {
-        return ((BlockPeripheralVariant)state.getValue( Properties.VARIANT )).getPeripheralType();
+        return state.getValue( Properties.VARIANT ).getPeripheralType();
     }
 
     @Override

src/main/java/dan200/computercraft/shared/peripheral/common/ItemCable.java

@@ -13,7 +13,6 @@ import net.minecraft.block.Block;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.creativetab.CreativeTabs;
 import net.minecraft.entity.player.EntityPlayer;
-import net.minecraft.init.Blocks;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
 import net.minecraft.tileentity.TileEntity;

src/main/java/dan200/computercraft/shared/peripheral/diskdrive/ContainerDiskDrive.java

@@ -47,7 +47,7 @@ public class ContainerDiskDrive extends Container
     public ItemStack transferStackInSlot( EntityPlayer player, int i )
     {
         ItemStack itemstack = null;
-        Slot slot = (Slot)inventorySlots.get(i);
+        Slot slot = inventorySlots.get(i);
         if(slot != null && slot.getHasStack())
         {
             ItemStack itemstack1 = slot.getStack();

src/main/java/dan200/computercraft/shared/peripheral/diskdrive/TileDiskDrive.java

@@ -17,13 +17,11 @@ import dan200.computercraft.shared.peripheral.common.BlockPeripheral;
 import dan200.computercraft.shared.peripheral.common.TilePeripheralBase;
 import dan200.computercraft.shared.util.InventoryUtil;
 import net.minecraft.block.state.IBlockState;
-import net.minecraft.client.audio.Sound;
 import net.minecraft.entity.item.EntityItem;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.inventory.IInventory;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTTagCompound;
-import net.minecraft.util.ITickable;
 import net.minecraft.util.*;
 import net.minecraft.util.math.*;
 import net.minecraft.util.text.*;
@@ -31,7 +29,6 @@ import net.minecraft.world.World;
 
 import javax.annotation.Nonnull;
 import java.util.HashMap;
-import java.util.Iterator;
 import java.util.Map;
 import java.util.Set;
 
@@ -121,7 +118,7 @@ public class TileDiskDrive extends TilePeripheralBase
     public EnumFacing getDirection()
     {
         IBlockState state = getBlockState();
-        return (EnumFacing)state.getValue( BlockPeripheral.Properties.FACING );
+        return state.getValue( BlockPeripheral.Properties.FACING );
     }
 
     @Override
@@ -278,10 +275,8 @@ public class TileDiskDrive extends TilePeripheralBase
             if( m_diskStack != null )
             {
                 Set<IComputerAccess> computers = m_computers.keySet();
-                Iterator<IComputerAccess> it = computers.iterator();
+                for( IComputerAccess computer : computers )
-                while( it.hasNext() )
                 {
-                    IComputerAccess computer = it.next();
                     unmountDisk( computer );
                 }
             }
@@ -306,10 +301,8 @@ public class TileDiskDrive extends TilePeripheralBase
             if( m_diskStack != null )
             {
                 Set<IComputerAccess> computers = m_computers.keySet();
-                Iterator<IComputerAccess> it = computers.iterator();
+                for( IComputerAccess computer : computers )
-                while( it.hasNext() )
                 {
-                    IComputerAccess computer = it.next();
                     mountDisk( computer );
                 }
             }

src/main/java/dan200/computercraft/shared/peripheral/modem/BlockAdvancedModem.java

@@ -15,13 +15,10 @@ import net.minecraft.block.properties.PropertyBool;
 import net.minecraft.block.properties.PropertyDirection;
 import net.minecraft.block.state.BlockStateContainer;
 import net.minecraft.block.state.IBlockState;
-import net.minecraft.entity.EntityLivingBase;
-import net.minecraft.item.ItemStack;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.world.IBlockAccess;
-import net.minecraft.world.World;
 
 import javax.annotation.Nonnull;
 
@@ -87,7 +84,7 @@ public class BlockAdvancedModem extends BlockPeripheralBase
         else
         {
             anim = 0;
-            dir = (EnumFacing)state.getValue( Properties.FACING );
+            dir = state.getValue( Properties.FACING );
         }
 
         state = state.withProperty( Properties.FACING, dir );

src/main/java/dan200/computercraft/shared/peripheral/modem/ModemPeripheral.java

@@ -15,7 +15,6 @@ import net.minecraft.world.World;
 
 import javax.annotation.Nonnull;
 import java.util.HashMap;
-import java.util.Iterator;
 import java.util.Map;
 
 public abstract class ModemPeripheral
@@ -107,10 +106,9 @@ public abstract class ModemPeripheral
             // Leave old network
             if( m_network != null )
             {
-                Iterator<IReceiver> it = m_channels.values().iterator();
+                for( IReceiver iReceiver : m_channels.values() )
-                while( it.hasNext() )
                 {
-                    m_network.removeReceiver( it.next() );
+                    m_network.removeReceiver( iReceiver );
                 }
             }
 
@@ -120,10 +118,9 @@ public abstract class ModemPeripheral
             // Join new network
             if( m_network != null )
             {
-                Iterator<IReceiver> it = m_channels.values().iterator();
+                for( IReceiver iReceiver : m_channels.values() )
-                while( it.hasNext() )
                 {
-                    m_network.addReceiver( it.next() );
+                    m_network.addReceiver( iReceiver );
                 }
             }
         }
@@ -315,10 +312,9 @@ public abstract class ModemPeripheral
                     {
                         if( m_network != null )
                         {
-                            Iterator<IReceiver> it = m_channels.values().iterator();
+                            for( IReceiver iReceiver : m_channels.values() )
-                            while( it.hasNext() )
                             {
-                                m_network.removeReceiver( it.next() );
+                                m_network.removeReceiver( iReceiver );
                             }
                         }
                         m_channels.clear();
@@ -381,10 +377,9 @@ public abstract class ModemPeripheral
     {
         if( m_network != null )
         {
-            Iterator<IReceiver> it = m_channels.values().iterator();
+            for( IReceiver iReceiver : m_channels.values() )
-            while( it.hasNext() )
             {
-                m_network.removeReceiver( it.next() );
+                m_network.removeReceiver( iReceiver );
             }
             m_channels.clear();
             m_network = null;

src/main/java/dan200/computercraft/shared/peripheral/modem/TileAdvancedModem.java

@@ -7,7 +7,6 @@
 package dan200.computercraft.shared.peripheral.modem;
 
 import dan200.computercraft.api.peripheral.IPeripheral;
-import dan200.computercraft.shared.peripheral.common.BlockPeripheral;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.EnumFacing;
@@ -64,7 +63,7 @@ public class TileAdvancedModem extends TileModemBase
     {
         // Wireless Modem
         IBlockState state = getBlockState();
-        return (EnumFacing)state.getValue( BlockAdvancedModem.Properties.FACING );
+        return state.getValue( BlockAdvancedModem.Properties.FACING );
     }
 
     @Override

src/main/java/dan200/computercraft/shared/peripheral/modem/TileCable.java

@@ -26,9 +26,11 @@ import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.tileentity.TileEntity;
-import net.minecraft.util.*;
+import net.minecraft.util.EnumFacing;
-import net.minecraft.util.math.*;
+import net.minecraft.util.math.AxisAlignedBB;
-import net.minecraft.util.text.*;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.text.TextComponentTranslation;
 import net.minecraft.world.World;
 
 import javax.annotation.Nonnull;
@@ -131,10 +133,8 @@ public class TileCable extends TileModemBase
                     {
                         int idx = 1;
                         Map<Object,Object> table = new HashMap<Object,Object>();
-                        Iterator<String> it = m_entity.m_peripheralWrappersByName.keySet().iterator();
+                        for( String name : m_entity.m_peripheralWrappersByName.keySet() )
-                        while( it.hasNext() )
                         {
-                            String name = it.next();
                             table.put( idx++, name );
                         }
                         return new Object[] { table };
@@ -193,10 +193,8 @@ public class TileCable extends TileModemBase
             super.attach( computer );
             synchronized( m_entity.m_peripheralsByName )
             {
-                Iterator<String> it = m_entity.m_peripheralsByName.keySet().iterator();
+                for (String periphName : m_entity.m_peripheralsByName.keySet())
-                while( it.hasNext() )
                 {
-                    String periphName = it.next();
                     IPeripheral peripheral = m_entity.m_peripheralsByName.get( periphName );
                     if( peripheral != null )
                     {
@@ -211,10 +209,8 @@ public class TileCable extends TileModemBase
         {
             synchronized( m_entity.m_peripheralsByName )
             {
-                Iterator<String> it = m_entity.m_peripheralsByName.keySet().iterator();
+                for (String periphName : m_entity.m_peripheralsByName.keySet())
-                while( it.hasNext() )
                 {
-                    String periphName = it.next();
                     m_entity.detachPeripheral( periphName );
                 }
             }
@@ -281,7 +277,7 @@ public class TileCable extends TileModemBase
     public EnumFacing getDirection()
     {
         IBlockState state = getBlockState();
-        BlockCableModemVariant modem = (BlockCableModemVariant)state.getValue( BlockCable.Properties.MODEM );
+        BlockCableModemVariant modem = state.getValue( BlockCable.Properties.MODEM );
         if( modem != BlockCableModemVariant.None )
         {
             return modem.getFacing();
@@ -296,7 +292,7 @@ public class TileCable extends TileModemBase
     public void setDirection( EnumFacing dir )
     {
         IBlockState state = getBlockState();
-        BlockCableModemVariant modem = ( BlockCableModemVariant )state.getValue( BlockCable.Properties.MODEM );
+        BlockCableModemVariant modem = state.getValue( BlockCable.Properties.MODEM );
         if( modem != BlockCableModemVariant.None )
         {
             setBlockState( state.withProperty( BlockCable.Properties.MODEM, BlockCableModemVariant.fromFacing( dir ) ) );
@@ -756,11 +752,9 @@ public class TileCable extends TileModemBase
             Set<IReceiver> receivers = m_receivers.get( packet.channel );
             if( receivers != null )
             {
-                Iterator<IReceiver> it = receivers.iterator();
+                for( IReceiver receiver : receivers )
-                while( it.hasNext() )
                 {
-                    IReceiver receiver = it.next();
+                    receiver.receiveSameDimension( packet.replyChannel, packet.payload, (double) distanceTravelled, packet.senderObject );
-                    receiver.receiveSameDimension( packet.replyChannel, packet.payload, (double)distanceTravelled, packet.senderObject );
                 }
             }
         }
@@ -920,10 +914,8 @@ public class TileCable extends TileModemBase
             }
 
             // Attach all the new peripherals
-            Iterator<String> it2 = newPeripheralsByName.keySet().iterator();
+            for( String periphName : newPeripheralsByName.keySet() )
-            while( it2.hasNext() )
             {
-                String periphName = it2.next();
                 if( !m_peripheralsByName.containsKey( periphName ) )
                 {
                     IPeripheral peripheral = newPeripheralsByName.get( periphName );

src/main/java/dan200/computercraft/shared/peripheral/modem/TileWirelessModem.java

@@ -69,7 +69,7 @@ public class TileWirelessModem extends TileModemBase
     {
         // Wireless Modem
         IBlockState state = getBlockState();
-        switch( (BlockPeripheralVariant)state.getValue( BlockPeripheral.Properties.VARIANT ) )
+        switch( state.getValue( BlockPeripheral.Properties.VARIANT ) )
         {
             case WirelessModemDownOff:
             case WirelessModemDownOn:
@@ -83,7 +83,7 @@ public class TileWirelessModem extends TileModemBase
             }
             default:
             {
-                return (EnumFacing)state.getValue( BlockPeripheral.Properties.FACING );
+                return state.getValue( BlockPeripheral.Properties.FACING );
             }
         }
     }

src/main/java/dan200/computercraft/shared/peripheral/modem/WirelessNetwork.java

@@ -66,10 +66,8 @@ public class WirelessNetwork implements INetwork
         Set<IReceiver> receivers = m_receivers.get( channel );
         if( receivers != null )
         {
-            Iterator<IReceiver> it = receivers.iterator();
+            for( IReceiver receiver : receivers )
-            while( it.hasNext() )
             {
-                IReceiver receiver = it.next();
                 tryTransmit( receiver, replyChannel, payload, world, pos, range, interdimensional, senderObject );
             }
         }

src/main/java/dan200/computercraft/shared/peripheral/monitor/MonitorPeripheral.java

@@ -111,7 +111,7 @@ public class MonitorPeripheral implements IPeripheral
                     throw new LuaException( "Expected boolean" );
                 }
                 Terminal terminal = m_monitor.getTerminal().getTerminal();
-                terminal.setCursorBlink( ((Boolean)args[0]).booleanValue() );
+                terminal.setCursorBlink( (Boolean) args[ 0 ] );
                 return null;
             }
             case 4:

src/main/java/dan200/computercraft/shared/peripheral/printer/ContainerPrinter.java

@@ -77,9 +77,9 @@ public class ContainerPrinter extends Container
         if( !m_printer.getWorld().isRemote )
         {
             boolean printing = m_printer.isPrinting();
-            for (int i=0; i<listeners.size(); ++i)
+            for( IContainerListener listener : listeners )
             {
-                IContainerListener icrafting = (IContainerListener)listeners.get(i);
+                IContainerListener icrafting = listener;
                 if( printing != m_lastPrinting )
                 {
                     icrafting.sendProgressBarUpdate( this, 0, printing ? 1 : 0 );
@@ -108,7 +108,7 @@ public class ContainerPrinter extends Container
     public ItemStack transferStackInSlot(EntityPlayer par1EntityPlayer, int i)
     {
         ItemStack itemstack = null;
-        Slot slot = (Slot)inventorySlots.get(i);
+        Slot slot = inventorySlots.get(i);
         if( slot != null && slot.getHasStack() )
         {
             ItemStack itemstack1 = slot.getStack();

src/main/java/dan200/computercraft/shared/proxy/CCTurtleProxyCommon.java

@@ -8,7 +8,6 @@ package dan200.computercraft.shared.proxy;
 
 import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.api.turtle.ITurtleUpgrade;
-import dan200.computercraft.api.turtle.TurtleUpgradeType;
 import dan200.computercraft.shared.computer.core.ComputerFamily;
 import dan200.computercraft.shared.computer.items.ComputerItemFactory;
 import dan200.computercraft.shared.turtle.blocks.BlockTurtle;
@@ -179,14 +178,14 @@ public abstract class CCTurtleProxyCommon implements ICCTurtleProxy
                 Entity.class,
                 entity,
                 "captureDrops"
-            ).booleanValue();
+            );
             
             if( !captured )
             {
                 ObfuscationReflectionHelper.setPrivateValue(
                     Entity.class,
                     entity,
-                        new Boolean( true ),
+                    Boolean.TRUE,
                     "captureDrops"
                 );
                 
@@ -220,7 +219,7 @@ public abstract class CCTurtleProxyCommon implements ICCTurtleProxy
                 ObfuscationReflectionHelper.setPrivateValue(
                     Entity.class,
                     entity,
-                    new Boolean( false ),
+                    Boolean.FALSE,
                     "captureDrops"
                 );
                 
@@ -437,10 +436,8 @@ public abstract class CCTurtleProxyCommon implements ICCTurtleProxy
         if( consumer != null )
         {
             // All checks have passed, lets dispatch the drops
-            Iterator<EntityItem> it = drops.iterator();
+            for(EntityItem entityItem : drops)
-            while( it.hasNext() )
             {
-                EntityItem entityItem = (EntityItem)it.next();
                 consumer.consumeDrop( entity, entityItem.getEntityItem() );
             }
             drops.clear();

src/main/java/dan200/computercraft/shared/turtle/apis/TurtleAPI.java

@@ -17,7 +17,6 @@ import dan200.computercraft.core.apis.ILuaAPI;
 import dan200.computercraft.shared.turtle.core.*;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
-import net.minecraft.util.ResourceLocation;
 
 import javax.annotation.Nonnull;
 import java.util.HashMap;
@@ -480,7 +479,7 @@ public class TurtleAPI implements ILuaAPI
                 if( stack != null && stack.stackSize > 0 )
                 {
                     Item item = stack.getItem();
-                    String name = ((ResourceLocation)Item.REGISTRY.getNameForObject( item )).toString();
+                    String name = Item.REGISTRY.getNameForObject( item ).toString();
                     int damage = stack.getItemDamage();
                     int count = stack.stackSize;
 

src/main/java/dan200/computercraft/shared/turtle/blocks/BlockTurtle.java

@@ -8,14 +8,11 @@ package dan200.computercraft.shared.turtle.blocks;
 
 import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.shared.computer.blocks.BlockComputerBase;
-import dan200.computercraft.shared.computer.blocks.TileCommandComputer;
 import dan200.computercraft.shared.computer.blocks.TileComputerBase;
 import dan200.computercraft.shared.computer.core.ComputerFamily;
 import dan200.computercraft.shared.util.DirectionUtil;
 import net.minecraft.block.material.Material;
-import net.minecraft.block.properties.IProperty;
 import net.minecraft.block.properties.PropertyDirection;
-import net.minecraft.block.properties.PropertyEnum;
 import net.minecraft.block.state.BlockStateContainer;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.entity.EntityLivingBase;

src/main/java/dan200/computercraft/shared/turtle/blocks/TileTurtle.java

@@ -10,7 +10,6 @@ import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.api.turtle.ITurtleAccess;
 import dan200.computercraft.api.turtle.ITurtleUpgrade;
 import dan200.computercraft.api.turtle.TurtleSide;
-import dan200.computercraft.api.turtle.TurtleUpgradeType;
 import dan200.computercraft.shared.computer.blocks.TileComputerBase;
 import dan200.computercraft.shared.computer.core.ComputerFamily;
 import dan200.computercraft.shared.computer.core.IComputer;
@@ -28,7 +27,6 @@ import net.minecraft.inventory.IInventory;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.nbt.NBTTagList;
-import net.minecraft.util.ITickable;
 import net.minecraft.util.*;
 import net.minecraft.util.math.*;
 import net.minecraft.util.text.*;

src/main/java/dan200/computercraft/shared/turtle/core/TurtleBrain.java

@@ -28,7 +28,6 @@ import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.*;
 import net.minecraft.util.math.*;
-import net.minecraft.util.text.*;
 import net.minecraft.world.World;
 import net.minecraftforge.common.util.Constants;
 
@@ -335,11 +334,11 @@ public class TurtleBrain implements ITurtleAccess
         // Write NBT
         if( m_upgradeNBTData.containsKey( TurtleSide.Left ) )
         {
-            nbttagcompound.setTag( "leftUpgradeNBT", (NBTTagCompound) getUpgradeNBTData( TurtleSide.Left ).copy() );
+            nbttagcompound.setTag( "leftUpgradeNBT", getUpgradeNBTData( TurtleSide.Left ).copy() );
         }
         if( m_upgradeNBTData.containsKey( TurtleSide.Right ) )
         {
-            nbttagcompound.setTag( "rightUpgradeNBT", (NBTTagCompound) getUpgradeNBTData( TurtleSide.Right ).copy() );
+            nbttagcompound.setTag( "rightUpgradeNBT", getUpgradeNBTData( TurtleSide.Right ).copy() );
         }
 
         return nbttagcompound;
@@ -371,11 +370,11 @@ public class TurtleBrain implements ITurtleAccess
         // NBT
         if( m_upgradeNBTData.containsKey( TurtleSide.Left ) )
         {
-            nbttagcompound.setTag( "leftUpgradeNBT", (NBTTagCompound) getUpgradeNBTData( TurtleSide.Left ).copy() );
+            nbttagcompound.setTag( "leftUpgradeNBT", getUpgradeNBTData( TurtleSide.Left ).copy() );
         }
         if( m_upgradeNBTData.containsKey( TurtleSide.Right ) )
         {
-            nbttagcompound.setTag( "rightUpgradeNBT", (NBTTagCompound) getUpgradeNBTData( TurtleSide.Right ).copy() );
+            nbttagcompound.setTag( "rightUpgradeNBT", getUpgradeNBTData( TurtleSide.Right ).copy() );
         }
 
         // Colour
@@ -738,10 +737,7 @@ public class TurtleBrain implements ITurtleAccess
                 if( ( (Number) response[ 1 ] ).intValue() == commandID )
                 {
                     Object[] returnValues = new Object[ response.length - 2 ];
-                    for( int i = 0; i < returnValues.length; ++i )
+                    System.arraycopy( response, 2, returnValues, 0, returnValues.length );
-                    {
-                        returnValues[ i ] = response[ i + 2 ];
-                    }
                     return returnValues;
                 }
             }
@@ -1033,10 +1029,7 @@ public class TurtleBrain implements ITurtleAccess
                                 Object[] arguments = new Object[ results.length + 2 ];
                                 arguments[0] = callbackID;
                                 arguments[1] = true;
-                                for( int i=0; i<results.length; ++i )
+                                System.arraycopy( results, 0, arguments, 2, results.length );
-                                {
-                                    arguments[2+i] = results[i];
-                                }
                                 computer.queueEvent( "turtle_response", arguments );
                             }
                             else
@@ -1140,16 +1133,16 @@ public class TurtleBrain implements ITurtleAccess
                     }
 
                     AxisAlignedBB aabb = new AxisAlignedBB( minX, minY, minZ, maxX, maxY, maxZ );
-                    List list = world.getEntitiesWithinAABBExcludingEntity( (Entity)null, aabb );
+                    List list = world.getEntitiesWithinAABBExcludingEntity( null, aabb );
                     if( !list.isEmpty() )
                     {
                         double pushStep = 1.0f / (float) ANIM_DURATION;
                         double pushStepX = (double) moveDir.getFrontOffsetX() * pushStep;
                         double pushStepY = (double) moveDir.getFrontOffsetY() * pushStep;
                         double pushStepZ = (double) moveDir.getFrontOffsetZ() * pushStep;
-                        for( int i = 0; i < list.size(); ++i )
+                        for (Object aList : list)
                         {
-                            Entity entity = (Entity) list.get( i );
+                            Entity entity = (Entity) aList;
                             entity.moveEntity(
                                 pushStepX, pushStepY, pushStepZ
                             );

src/main/java/dan200/computercraft/shared/turtle/core/TurtleCompareCommand.java

@@ -21,7 +21,6 @@ import net.minecraftforge.fml.relauncher.ReflectionHelper;
 
 import javax.annotation.Nonnull;
 import java.lang.reflect.Method;
-import java.util.Iterator;
 
 public class TurtleCompareCommand implements ITurtleCommand
 {
@@ -84,10 +83,8 @@ public class TurtleCompareCommand implements ITurtleCommand
                         java.util.List<ItemStack> drops = lookAtBlock.getDrops( world, newPosition, lookAtState, 0 );
                         if( drops != null && drops.size() > 0 )
                         {
-                            Iterator<ItemStack> it = drops.iterator();
+                            for( ItemStack drop : drops )
-                            while( it.hasNext() )
                             {
-                                ItemStack drop = it.next();
                                 if( drop.getItem() == Item.getItemFromBlock( lookAtBlock ) )
                                 {
                                     lookAtStack = drop;

src/main/java/dan200/computercraft/shared/turtle/core/TurtleCraftCommand.java

@@ -38,9 +38,8 @@ public class TurtleCraftCommand implements ITurtleCommand
         if( results != null )
         {
             // Store the results
-            for( int i=0; i<results.size(); ++i )
+            for( ItemStack stack : results )
             {
-                ItemStack stack = results.get( i );
                 ItemStack remainder = InventoryUtil.storeItems( stack, turtle.getInventory(), 0, turtle.getInventory().getSizeInventory(), turtle.getSelectedSlot() );
                 if( remainder != null )
                 {

src/main/java/dan200/computercraft/shared/turtle/core/TurtleDropCommand.java

@@ -12,11 +12,8 @@ import dan200.computercraft.api.turtle.TurtleAnimation;
 import dan200.computercraft.api.turtle.TurtleCommandResult;
 import dan200.computercraft.shared.util.InventoryUtil;
 import dan200.computercraft.shared.util.WorldUtil;
-import net.minecraft.init.SoundEvents;
 import net.minecraft.inventory.IInventory;
 import net.minecraft.item.ItemStack;
-import net.minecraft.util.SoundCategory;
-import net.minecraft.util.SoundEvent;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.world.World;

src/main/java/dan200/computercraft/shared/turtle/core/TurtleInspectCommand.java

@@ -16,7 +16,6 @@ import net.minecraft.block.properties.IProperty;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.EnumFacing;
-import net.minecraft.util.ResourceLocation;
 import net.minecraft.world.World;
 
 import javax.annotation.Nonnull;
@@ -51,7 +50,7 @@ public class TurtleInspectCommand implements ITurtleCommand
             {
                 IBlockState state = world.getBlockState( newPosition );
                 Block block = state.getBlock();
-                String name = ((ResourceLocation)Block.REGISTRY.getNameForObject( block )).toString();
+                String name = Block.REGISTRY.getNameForObject( block ).toString();
                 int metadata = block.getMetaFromState( state );
 
                 Map<Object, Object> table = new HashMap<Object, Object>();

src/main/java/dan200/computercraft/shared/turtle/core/TurtleMoveCommand.java

@@ -72,10 +72,10 @@ public class TurtleMoveCommand implements ITurtleCommand
             if( ComputerCraft.turtlesCanPush && m_direction != MoveDirection.Up && m_direction != MoveDirection.Down )
             {
                 // Check there is space for all the pushable entities to be pushed
-                List list = oldWorld.getEntitiesWithinAABBExcludingEntity( (Entity)null, aabb );
+                List list = oldWorld.getEntitiesWithinAABBExcludingEntity( null, aabb );
-                for( int i=0; i<list.size(); ++i )
+                for( Object aList : list )
                 {
-                    Entity entity = (Entity)list.get( i );
+                    Entity entity = (Entity) aList;
                     if( !entity.isDead && entity.preventEntitySpawning )
                     {
                         AxisAlignedBB entityBB = entity.getEntityBoundingBox();

src/main/java/dan200/computercraft/shared/turtle/core/TurtleSuckCommand.java

@@ -95,14 +95,14 @@ public class TurtleSuckCommand implements ITurtleCommand
             {
                 boolean foundItems = false;
                 boolean storedItems = false;
-                for( int i=0; i<list.size(); i++ )
+                for( Object aList : list )
                 {
-                    Entity entity = (Entity)list.get(i);
+                    Entity entity = (Entity) aList;
                     if( entity != null && entity instanceof EntityItem && !entity.isDead )
                     {
                         // Suck up the item
                         foundItems = true;
-                        EntityItem entityItem = (EntityItem)entity;
+                        EntityItem entityItem = (EntityItem) entity;
                         ItemStack stack = entityItem.getEntityItem().copy();
                         ItemStack storeStack;
                         ItemStack leaveStack;

src/main/java/dan200/computercraft/shared/turtle/inventory/ContainerTurtle.java

@@ -108,12 +108,11 @@ public class ContainerTurtle extends Container
         super.detectAndSendChanges();
         
         int selectedSlot = m_turtle.getSelectedSlot();
-        for( int i=0; i<listeners.size(); ++i )
+        for( IContainerListener listener : listeners )
         {
-            IContainerListener icrafting = (IContainerListener)listeners.get(i);
             if( m_selectedSlot != selectedSlot )
             {
-                icrafting.sendProgressBarUpdate( this, PROGRESS_ID_SELECTED_SLOT, selectedSlot );
+                listener.sendProgressBarUpdate( this, PROGRESS_ID_SELECTED_SLOT, selectedSlot );
             }
         }
         m_selectedSlot = selectedSlot;
@@ -146,7 +145,7 @@ public class ContainerTurtle extends Container
 
     protected ItemStack tryItemMerge( EntityPlayer player, int slotNum, int firstSlot, int lastSlot, boolean reverse )
     {
-        Slot slot = (Slot)inventorySlots.get( slotNum );
+        Slot slot = inventorySlots.get( slotNum );
         ItemStack originalStack = null;
         if( slot != null && slot.getHasStack() )
         {

src/main/java/dan200/computercraft/shared/turtle/upgrades/TurtleHoe.java

@@ -11,7 +11,6 @@ import dan200.computercraft.api.turtle.TurtleCommandResult;
 import dan200.computercraft.api.turtle.TurtleSide;
 import dan200.computercraft.api.turtle.TurtleVerb;
 import dan200.computercraft.shared.turtle.core.TurtlePlaceCommand;
-import net.minecraft.block.Block;
 import net.minecraft.block.material.Material;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.item.Item;

src/main/java/dan200/computercraft/shared/turtle/upgrades/TurtleShovel.java

@@ -5,7 +5,6 @@
  */
 
 package dan200.computercraft.shared.turtle.upgrades;
-import net.minecraft.block.Block;
 import net.minecraft.block.material.Material;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.item.Item;

src/main/java/dan200/computercraft/shared/turtle/upgrades/TurtleSword.java

@@ -5,7 +5,6 @@
  */
 
 package dan200.computercraft.shared.turtle.upgrades;
-import net.minecraft.block.Block;
 import net.minecraft.block.material.Material;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.item.Item;

src/main/java/dan200/computercraft/shared/turtle/upgrades/TurtleTool.java

@@ -19,7 +19,6 @@ import net.minecraft.block.Block;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.renderer.block.model.IBakedModel;
-import net.minecraft.client.renderer.block.model.IBakedModel;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.SharedMonsterAttributes;
 import net.minecraft.entity.item.EntityArmorStand;
@@ -37,7 +36,6 @@ import org.apache.commons.lang3.tuple.Pair;
 
 import javax.annotation.Nonnull;
 import javax.vecmath.Matrix4f;
-import java.util.Iterator;
 
 public class TurtleTool implements ITurtleUpgrade
 {
@@ -271,10 +269,8 @@ public class TurtleTool implements ITurtleUpgrade
                 java.util.List<ItemStack> items = getBlockDropped( world, newPosition );
                 if( items != null && items.size() > 0 )
                 {
-                    Iterator<ItemStack> it = items.iterator();
+                    for( ItemStack stack : items )
-                    while( it.hasNext() )
                     {
-                        ItemStack stack = it.next();
                         ItemStack remainder = InventoryUtil.storeItems( stack, turtle.getInventory(), 0, turtle.getInventory().getSizeInventory(), turtle.getSelectedSlot() );
                         if( remainder != null )
                         {

src/main/java/dan200/computercraft/shared/util/IDAssigner.java

@@ -21,7 +21,7 @@ public class IDAssigner
     private static int getNextID( File location, boolean directory )
     {
         // Determine where to locate ID file
-        File lastidFile = null;    
+        File lastidFile;
         if( directory )
         {
             location.mkdirs();
@@ -41,12 +41,15 @@ public class IDAssigner
             if( directory && location.exists() && location.isDirectory() )
             {
                 String[] contents = location.list();
-                for( int i=0; i<contents.length; ++i )
+                for( String content : contents )
                 {
-                    try {
+                    try
-                        int number = Integer.parseInt( contents[i] );
+                    {
+                        int number = Integer.parseInt( content );
                         id = Math.max( number + 1, id );
-                    } catch( NumberFormatException e ) {
+                    }
+                    catch( NumberFormatException e )
+                    {
                         continue;
                     }
                 }
@@ -55,7 +58,7 @@ public class IDAssigner
         else
         {
             // If an ID file does exist, parse the file to get the ID string
-            String idString = "0";
+            String idString;
             try
             {
                 FileInputStream in = new FileInputStream( lastidFile );

src/main/java/dan200/computercraft/shared/util/InventoryUtil.java

@@ -206,12 +206,11 @@ public class InventoryUtil
 
         // Inspect the slots in order and try to find empty or stackable slots
         ItemStack remainder = stack;
-        for( int n=0; n<slots.length; ++n )
+        for( int slot : slots )
         {
-            int slot = slots[n];
             if( canPlaceItemThroughFace( inventory, slot, remainder, face ) )
             {
-                ItemStack slotContents = inventory.getStackInSlot(slot);
+                ItemStack slotContents = inventory.getStackInSlot( slot );
                 if( slotContents == null )
                 {
                     // Slot is empty
@@ -286,9 +285,8 @@ public class InventoryUtil
         // Combine multiple stacks from inventory into one if necessary
         ItemStack partialStack = null;
         int countRemaining = count;
-        for( int n=0; n<slots.length; ++n )
+        for( int slot : slots )
         {
-            int slot = slots[n];
             if( countRemaining > 0 )
             {
                 ItemStack stack = inventory.getStackInSlot( slot );

src/main/java/dan200/computercraft/shared/util/NBTUtil.java

@@ -20,7 +20,7 @@ public class NBTUtil
         {
             if( object instanceof Boolean )
             {
-                boolean b = ((Boolean)object).booleanValue();
+                boolean b = (Boolean) object;
                 return new NBTTagByte( b ? (byte)1 : (byte)0 );
             }
             else if( object instanceof Number )

src/main/java/dan200/computercraft/shared/util/ReflectionUtil.java

@@ -35,11 +35,11 @@ public class ReflectionUtil
                 Class[] declaredClasses = enclosingClass.getDeclaredClasses();
                 if( declaredClasses != null )
                 {
-                    for( int i=0; i<declaredClasses.length; ++i )
+                    for( Class declaredClass : declaredClasses )
                     {
-                        if( declaredClasses[i].getSimpleName().equals( name ) )
+                        if( declaredClass.getSimpleName().equals( name ) )
                         {
-                            return declaredClasses[i];
+                            return declaredClass;
                         }
                     }
                 }

src/main/java/dan200/computercraft/shared/util/WorldUtil.java

@@ -6,8 +6,6 @@
 
 package dan200.computercraft.shared.util;
 
-import net.minecraft.block.Block;
-import net.minecraft.block.state.IBlockState;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.item.EntityItem;
 import net.minecraft.item.ItemStack;
@@ -63,9 +61,9 @@ public class WorldUtil
         Entity closest = null;
         double closestDist = 99.0;
         List list = world.getEntitiesWithinAABBExcludingEntity( null, bigBox );
-        for( int i=0; i<list.size(); i++ )
+        for( Object aList : list )
         {
-            Entity entity = (net.minecraft.entity.Entity)list.get(i);
+            Entity entity = (Entity) aList;
             if( entity.isDead || !entity.canBeCollidedWith() )
             {
                 continue;