Can't include the same interface with different parameters?

Question

Consider the following example:

public class Sandbox {
    public interface Listener {
        public void onEvent(T event);
             


        

Answer 1

No. You cant. It's because generics are supported only at compiler level. So you can't do thinks like

public interface AnotherInterface {
    public void onEvent(List event);
    public void onEvent(List event);
}

or implements interface with several parameters.

upd

I think workaround will be like this:

public class Sandbox {
//    ....
    public final class JPanelEventHandler implements Listener {
        AnotherInterface target;
        JPanelEventHandler(AnotherInterface target){this.target = target;}
        public final void onEvent(JPanel event){
             target.onEvent(event);
        }
    }
///same with JLabel
}