Good thoughts. I've always been a strong supporter of the "open source" concept, even though (as you've made it clear) the source need not be distributed for another programmer to find out how the...

Yea, like someone in serious need of "homework help".

Jars are just another archive-type file.. The purpose is to hold a number of files under a common name, "myfile.jar", to keep organized and to...

Hmmm. I can't be super helpful before I fall asleep tonight, but..

First thing is working with Generics (http://java.sun.com/docs/books/tutorial/java/generics/index.html)

Regular expressions?...

*squints at code*

.....

Haha, silly me. I missed this at first glance.

1) instead of *.addActionPerformed(this); use *.addActionListener(this);

2) e.getSource() returns an Object, and...

Does (ballX, ballY) represent the center of the ball, or the top-left edge of the bounding square?

For one, this if statement looks somewhat "iffy":
if (ballY < 0 || ballY > (getHeight()-25) &&...

Is there any way we can filter threads like this from being posted? Or, can they be removed? I'm not sure, but I think DaniWeb could go without such dribble as do-my-homework demands.