Overriding is done by checking a method's signature: Return type, name, method parameters. If your method matches that of a class that is being extended, then that method is overriden. In this case, the only thing you can do is provide another method signature (Change the name or parameters), otherwise you will always be overriding the things in Component.

With Interfaces, you're not overriding anything. You're implementing it. Which is two different ideas. Overriding is hiding another method declaration with yours. Implementing is ensuring that the contract described by the Interface or by an abstract class is met. In this case, Component is providing the implemenation of void move(int x, inty), which is why it doesn't show up when you add unimplemented methods.

It needs to have Component so i can use createImage(), and didn't want to rename some of the methods, but that's what I'll do.

This whole time I was passing 'this' to it, saving it as 'that'.  I never knew I could use that.createImage().  Thank you for the pointer.