It looks to me that Yahoo! Answers has only posted part of your program. You can post the whole thing, with formatting in the following forum:

Java Forum:

My best guess is that the method called: “PaintPiece()” is trying to paint a null piece. Perhaps there is no piece because it’s an empty square.

your code is incomplete. if we cannot see line 190 we cannot help you. post the entire code.

ouch…i hurt my eyes looking at that lol. What error message are you getting?