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You'll want to wrap your posted code in
[/code] tags so that it retains its formatting and is easier to read.

Is your shape drawn in a JPanel's paintComponent method? If so, perhaps have a...

I think that you'll want to delete this answer as it is not a solution for the original poster's problem and may be misleading to him.

This all depends on how you're drawing things to the JPanel. I assume that you're either drawing to a BufferedImage or within a paintComponent method override. If a BufferedImage, simply draw a...