I'm writing an application to learn Swing. I've done myself no favors in that I keep changing the target, and now I'm approaching the level where I've glommed to many hacks and fixes onto my original ...

I'm learning Java by writing a Mandelbrot program. I can draw the image, then use the mouse to choose an area to magnify. Works great, except... When I choose the area to magnify (mouse down, move ...