Learning process

I personally didn't learn that much about writing java itself as I already had a bit of experience in using it before, I think what I did learn though was more about colour choice and how the colours change between what they look like on the screen and how they print. For my next project I would like to again use the computer to do all of the work and make the pieces complex, however I would like to be able to control the complexity and the randomness. So achieve a controlled chaos instead of just chaos.