Simple Animation With A Timer

Hi

I want to make a version of PacMan in Java. However, Ive never worked with animation before. I've researched on the Internet about it, and Timers seem to be used quite a lot. Does anyone know of good tutorials on animating a simple circle that has been painted on screen? It would also be good if anyone knew of how to control a circle painted on screen, i.e. using the keyboard.

Thanks for any help

[422 byte] By [Fergala] at [2007-11-27 2:19:51]