Java Programming

Hi! I'm using a JFrame in a game I'm developing, and this should be resizeable within some bounds. This works fine for the minimum size, the user is unable to even try to resize the frame smaller than what I've set as the minimum size. But it seems like maximum size is a different issue - I can't find a way to bound how large the user may expand the frame. Of course, when it's extended to a larger size than my specified maximum, it's resized back to the maximum size (using a ComponentListener to detect resize attempts - this has to be done because I need a constant aspect ratio - and a maximum size). But I don't like this solution very much, I would rather find it impossible to even try to extend the frame larger than the bounds - in the same way one can set the bounds for the minimum size. Please help me!

Any suggestions anyone?