Some performance or memory optimizations

Replaced String concat in loops with StringBuilder (performance)
Replaced for with keySet + Map.get() through for with entrySet (perf)
Changed inner classes to static classes, mostly struct like (memory)

src/main/java/appeng/recipes/handlers/Shaped.java

@@ -64,21 +64,21 @@ public class Shaped implements ICraftHandler, IWebsiteSerializer
 
 		for (int y = 0; y < rows; y++)
 		{
-			String row = "";
+			StringBuilder row = new StringBuilder();
 			for (int x = 0; x < cols; x++)
 			{
 				if ( inputs.get( y ).get( x ).isAir() )
-					row = row + " ";
+					row.append( " " );
 				else
 				{
-					row = row + first;
+					row.append( first );
 					args.add( first );
 					args.add( inputs.get( y ).get( x ) );
 
 					first++;
 				}
 			}
-			args.add( y, row );
+			args.add( y, row.toString() );
 		}
 
 		ItemStack outIS = output.getItemStack();

src/main/java/appeng/recipes/handlers/Shapeless.java

@@ -57,9 +57,10 @@ public class Shapeless implements ICraftHandler, IWebsiteSerializer
 			throw new RegistrationError( "Error while adding shapeless recipe." );
 		}
 	}
-	
+
 	@Override
-	public boolean canCraft(ItemStack reqOutput) throws RegistrationError, MissingIngredientError {
+	public boolean canCraft(ItemStack reqOutput) throws RegistrationError, MissingIngredientError
+	{
 
 		for (IIngredient i : inputs)
 		{
@@ -74,26 +75,27 @@ public class Shapeless implements ICraftHandler, IWebsiteSerializer
 				}
 			}
 		}
-		
-		return Platform.isSameItemPrecise( output.getItemStack(),reqOutput );
+
+		return Platform.isSameItemPrecise( output.getItemStack(), reqOutput );
 	}
 
 	@Override
-	public String getPattern( RecipeHandler h) {
-		String o = "shapeless "+output.getQty()+"\n";
+	public String getPattern(RecipeHandler h)
+	{
+		StringBuilder o = new StringBuilder( "shapeless " + output.getQty() + "\n" );
 
-		o += h.getName(output)+"\n";
-		
-		for ( int y = 0; y < inputs.size(); y++ )
+		o.append( h.getName( output ) + "\n" );
+
+		for (int y = 0; y < inputs.size(); y++)
 		{
-			IIngredient i = inputs.get(y);
+			IIngredient i = inputs.get( y );
 			if ( i.isAir() )
-				o += "air"+( y +1 == inputs.size() ? "\n" : " " );
+				o.append( "air" + (y + 1 == inputs.size() ? "\n" : " ") );
 			else
-				o += h.getName(i)+( y +1 == inputs.size() ? "\n" : " " );
+				o.append( h.getName( i ) + (y + 1 == inputs.size() ? "\n" : " ") );
 		}
-		
-		return o.trim();
+
+		return o.toString().trim();
 	}
-	
+
 }