Just put down the Sun OSS and back away slowly
Uncle Larry is not in the giving stuff away business. This stuff is not really free software any more, no matter what the license terms say. If it were, Oracle would not be suing Google over Java. It's just a trap.
Stay away from all things Oracle. If you get fond of any of this stuff you're just installing the ring in your own nose. Once it's in, Uncle Larry's going to put you in front of a plow.