Java IDE

Hi Im not sure what Jave IDE I should use.
Any recomendations? I've tried Eclipse once, was satisfied with it. But how would you compare it to other IDE?
Preferbly I'm looking for a free IDE, e.g. Open-Source.

Don't use an IDE, seriously.  They are worthless for small projects(Really all project IMO), and you definitely won't learn as much.  Just make sure you have a good shell, and editor you like(vi is the only real editor, but something like pico or nedit is good for beginners), and javac and java binaries.