class SomeCrazyEvent extends Event<SomeCrazyEventListener>
{
	public void notify(SomeCrazyEventListener listener) {
		listener.onSomeCrazyEvent(this); // This way classes can listen to multiple events
	}
}

class SomeClass implements SomeCrazyEventListener
{
	public SomeClass() {
		EventManager.subscribe(SomeCrazyEvent.Class, this);
	}

	public void onSomeCrazyEvent(SomeCrazyEvent event) {
		// do event
	}
}

EventManager.notify(new SomeCrazyEvent(foobar));