Improved exceptions

Many exceptions got an improvement due to changed class or description or details it is providing.
Is not complete, needs to be done in patches in the regions, where it is needed, since some are just
swallowed.

Removed total usage of pure RuntimeExceptions to 0.

src/main/java/appeng/util/iterators/AEInvIterator.java

@@ -25,37 +25,38 @@ import appeng.api.storage.data.IAEItemStack;
 import appeng.tile.inventory.AppEngInternalAEInventory;
 
 
-public class AEInvIterator implements Iterator<IAEItemStack>
+public final class AEInvIterator implements Iterator<IAEItemStack>
 {
+	private final AppEngInternalAEInventory inventory;
+	private final int size;
 
-	final AppEngInternalAEInventory inv;
-	final int size;
+	private int counter = 0;
 
-	int x = 0;
-
-	public AEInvIterator( AppEngInternalAEInventory i )
+	public AEInvIterator( AppEngInternalAEInventory inventory )
 	{
-		this.inv = i;
-		this.size = this.inv.getSizeInventory();
+		this.inventory = inventory;
+		this.size = this.inventory.getSizeInventory();
 	}
 
 	@Override
 	public boolean hasNext()
 	{
-		return this.x < this.size;
+		return this.counter < this.size;
 	}
 
 	@Override
 	public IAEItemStack next()
 	{
-		IAEItemStack result = this.inv.getAEStackInSlot( this.x );
-		this.x++;
+		final IAEItemStack result = this.inventory.getAEStackInSlot( this.counter );
+
+		this.counter++;
+
 		return result;
 	}
 
 	@Override
 	public void remove()
 	{
-		throw new RuntimeException( "no..." );
+		throw new UnsupportedOperationException();
 	}
 }

src/main/java/appeng/util/iterators/ChainedIterator.java

@@ -22,11 +22,11 @@ package appeng.util.iterators;
 import java.util.Iterator;
 
 
-public class ChainedIterator<T> implements Iterator<T>
+public final class ChainedIterator<T> implements Iterator<T>
 {
+	private final T[] list;
 
-	final T[] list;
-	int offset = 0;
+	private int offset = 0;
 
 	public ChainedIterator( T... list )
 	{
@@ -50,6 +50,6 @@ public class ChainedIterator<T> implements Iterator<T>
 	@Override
 	public void remove()
 	{
-		throw new RuntimeException( "Not implemented." );
+		throw new UnsupportedOperationException();
 	}
 }

src/main/java/appeng/util/iterators/InvIterator.java

@@ -25,37 +25,37 @@ import net.minecraft.inventory.IInventory;
 import net.minecraft.item.ItemStack;
 
 
-public class InvIterator implements Iterator<ItemStack>
+public final class InvIterator implements Iterator<ItemStack>
 {
+	private final IInventory inventory;
+	private final int size;
 
-	final IInventory inv;
-	final int size;
+	private int counter = 0;
 
-	int x = 0;
-
-	public InvIterator( IInventory i )
+	public InvIterator( IInventory inventory )
 	{
-		this.inv = i;
-		this.size = this.inv.getSizeInventory();
+		this.inventory = inventory;
+		this.size = this.inventory.getSizeInventory();
 	}
 
 	@Override
 	public boolean hasNext()
 	{
-		return this.x < this.size;
+		return this.counter < this.size;
 	}
 
 	@Override
 	public ItemStack next()
 	{
-		ItemStack result = this.inv.getStackInSlot( this.x );
-		this.x++;
+		ItemStack result = this.inventory.getStackInSlot( this.counter );
+		this.counter++;
+
 		return result;
 	}
 
 	@Override
 	public void remove()
 	{
-		throw new RuntimeException( "no..." );
+		throw new UnsupportedOperationException();
 	}
 }

src/main/java/appeng/util/iterators/ProxyNodeIterator.java

@@ -27,10 +27,9 @@ import appeng.api.networking.IGridHost;
 import appeng.api.networking.IGridNode;
 
 
-public class ProxyNodeIterator implements Iterator<IGridNode>
+public final class ProxyNodeIterator implements Iterator<IGridNode>
 {
-
-	final Iterator<IGridHost> hosts;
+	private final Iterator<IGridHost> hosts;
 
 	public ProxyNodeIterator( Iterator<IGridHost> hosts )
 	{
@@ -53,6 +52,6 @@ public class ProxyNodeIterator implements Iterator<IGridNode>
 	@Override
 	public void remove()
 	{
-		throw new RuntimeException( "Not implemented." );
+		throw new UnsupportedOperationException();
 	}
 }