Hi again allelopath!
Well, OpenGL, glut and SDL would do it, I guess
. I'm don't want to make you give up on Java 3D though. Java was pretty lame years ago and looked like it was dead. Then Sun released a major update, Java 2, and it got quite popular.
Maybe Sun plans a nice update in the future for Java 3D, since the world has turned in a crazy 3D ground. But that is just a wild, senseless guess
.
If you think that C++ and OpenGL is too much of a hassle (I do, specially due the lack of tutorials in this subject, though, OpenGL Red and Blue books are nice...), I'd recommend pygame:
www.pygame.org
it's portable, it's hooked with SDL and can be hooked with OpenGL. There're some good tutorials on the net and even an irc channel, quite active on FreeNode (If I'm not mistaken).
I never did anything 3D with pygame though, mind you