This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
avn: i was thinking of doing a little more research and replying.. but since you want an ans fast, I will suggest that you may have to update the graphics......check out if repaint() and/or paint() has to be called..... sorry if i am being very vague...but i really don't have much time right now.... regds. - satya