Block Dance - Small and legal

I may release later, just not yet, I'm still planning things and besides, the code is simple enough people should go figure it out. I run into a lot of beginning programmers who come on here and just copy and paste the code, then wonder why it isn't working. Also, I might maybe possibly make a better version in C++ sometime as a 3D side-scroller with better tutorials, more levels (cleary, like 75-100 levels) and level designers and such (albeit that would happen far in the future). Still trying to decide on my first programming project.

No, Java is just as powerful as C++. I know your code is simple, especially because I assume that you're using Greenfoot's built-in collision which is notoriously inaccurate...