OT: Java game engines?

Off-topic but, anybody know of any game engines or development tools controllable from Java? Particularly ones that are accessible to beginners, and that let you throw together small games quickly like Panda3D does. Either 2D or 3D.

I had fun for a while with the mobile dev kit for java. Might be worth having a look here though:

http://www.devmaster.net/engines/

Ah yes, devmaster. jMonkeyEngine looks pretty good, I think that might be all, at least as far as serious engines go. jmonkeyengine.com/