Make fields final if possible to ensure immutability

src/main/java/appeng/me/cache/CraftingGridCache.java

@@ -68,19 +68,19 @@ import com.google.common.collect.SetMultimap;
 public class CraftingGridCache implements ICraftingGrid, ICraftingProviderHelper, ICellProvider, IMEInventoryHandler
 {
 
-	HashSet<CraftingCPUCluster> cpuClusters = new HashSet<CraftingCPUCluster>();
-	HashSet<ICraftingProvider> providers = new HashSet<ICraftingProvider>();
+	final HashSet<CraftingCPUCluster> cpuClusters = new HashSet<CraftingCPUCluster>();
+	final HashSet<ICraftingProvider> providers = new HashSet<ICraftingProvider>();
 
-	private HashMap<IGridNode, ICraftingWatcher> watchers = new HashMap<IGridNode, ICraftingWatcher>();
+	private final HashMap<IGridNode, ICraftingWatcher> watchers = new HashMap<IGridNode, ICraftingWatcher>();
 
-	IGrid grid;
+	final IGrid grid;
 	IStorageGrid sg;
 	IEnergyGrid eg;
 
-	HashMap<ICraftingPatternDetails, List<ICraftingMedium>> craftingMethods = new HashMap<ICraftingPatternDetails, List<ICraftingMedium>>();
+	final HashMap<ICraftingPatternDetails, List<ICraftingMedium>> craftingMethods = new HashMap<ICraftingPatternDetails, List<ICraftingMedium>>();
 	HashMap<IAEItemStack, ImmutableList<ICraftingPatternDetails>> craftableItems = new HashMap<IAEItemStack, ImmutableList<ICraftingPatternDetails>>();
-	HashSet<IAEItemStack> emitableItems = new HashSet<IAEItemStack>();
-	HashMap<String, CraftingLinkNexus> links = new HashMap<String, CraftingLinkNexus>();
+	final HashSet<IAEItemStack> emitableItems = new HashSet<IAEItemStack>();
+	final HashMap<String, CraftingLinkNexus> links = new HashMap<String, CraftingLinkNexus>();
 
 	boolean updateList = false;
 	final private SetMultimap<IAEStack, CraftingWatcher> interests = HashMultimap.create();
@@ -287,7 +287,7 @@ public class CraftingGridCache implements ICraftingGrid, ICraftingProviderHelper
 			details.add( medium );
 	}
 
-	static Comparator<ICraftingPatternDetails> comp = new Comparator<ICraftingPatternDetails>(){
+	static final Comparator<ICraftingPatternDetails> comp = new Comparator<ICraftingPatternDetails>(){
 		@Override
 		public int compare(ICraftingPatternDetails o1,
 				ICraftingPatternDetails o2) {

src/main/java/appeng/me/cache/GridStorageCache.java

@@ -46,12 +46,12 @@ public class GridStorageCache implements IStorageGrid
 	final public IGrid myGrid;
 
 	private NetworkInventoryHandler<IAEItemStack> myItemNetwork;
-	private NetworkMonitor<IAEItemStack> itemMonitor = new NetworkMonitor<IAEItemStack>( this, StorageChannel.ITEMS );
+	private final NetworkMonitor<IAEItemStack> itemMonitor = new NetworkMonitor<IAEItemStack>( this, StorageChannel.ITEMS );
 
 	private NetworkInventoryHandler<IAEFluidStack> myFluidNetwork;
-	private NetworkMonitor<IAEFluidStack> fluidMonitor = new NetworkMonitor<IAEFluidStack>( this, StorageChannel.FLUIDS );
+	private final NetworkMonitor<IAEFluidStack> fluidMonitor = new NetworkMonitor<IAEFluidStack>( this, StorageChannel.FLUIDS );
 
-	private HashMap<IGridNode, IStackWatcher> watchers = new HashMap<IGridNode, IStackWatcher>();
+	private final HashMap<IGridNode, IStackWatcher> watchers = new HashMap<IGridNode, IStackWatcher>();
 
 	public GridStorageCache(IGrid g) {
 		myGrid = g;
@@ -95,7 +95,7 @@ public class GridStorageCache implements IStorageGrid
 	private class CellChangeTracker
 	{
 
-		List<CellChangeTrackerRecord> data = new LinkedList<CellChangeTrackerRecord>();
+		final List<CellChangeTrackerRecord> data = new LinkedList<CellChangeTrackerRecord>();
 
 		public void postChanges(StorageChannel channel, int i, IMEInventoryHandler<? extends IAEStack> h, BaseActionSource actionSrc)
 		{

src/main/java/appeng/me/cache/helpers/TickTracker.java

@@ -16,7 +16,7 @@ public class TickTracker implements Comparable<TickTracker>
 	public final IGridNode node;
 	public final TickManagerCache host;
 
-	public long LastFiveTicksTime = 0;
+	public final long LastFiveTicksTime = 0;
 
 	public long lastTick;
 	public int current_rate;

src/main/java/appeng/me/cache/helpers/TunnelIterator.java

@@ -8,8 +8,8 @@ import appeng.parts.p2p.PartP2PTunnel;
 public class TunnelIterator<T extends PartP2PTunnel> implements Iterator<T>
 {
 
-	Iterator<T> wrapped;
-	Class targetType;
+	final Iterator<T> wrapped;
+	final Class targetType;
 	T Next;
 
 	private void findNext()