Creating an JButton that implements EventListener

Question

Hi all
im at university and have a question that was in one of my java books. Im learning about event handling
and adding EventListeners to components. But there was a one part of my book that talked about defining a new class of JButton
that extends JButton and implemented ActionListener that could listen for itself being clicked.
so i could just create instances of this button.
could someone explain this idea to me or show me a tutorial on it i tryed googe but i could not find
anything that helped.

Answer 1

JustSomeGuy wrote:
I was just kidding in my last response, as that is the same thing as calling system.exit.
Making a generic "Exit" EventListner is also a good ideal, but that doesn't mean you can't make a generic "exit" button as well.
The way I personally handle it is I always have a CleanUp method in my code, typically in the same class as main is. If it is not threaded, or is a simple GUI (differentiated because swing GUI's are always multithreaded) then the method does contain system.exit(0), usually right after dispose() without much else. If it is multithreaded, then that is another story. My generic "Exit" button, which is actually on my netbeans pallette, simply calls CleanUp. I think I have one for menu exit items too, not sure I would have to check.
JSGCalls cleanUp where? I'm not really seeing the advantage. You call System.exit()? Hmmmm