I want to know, all of java game engine / library, which one are object oriented style ? I know , java3D is one . What about the others ? Thanks

jMe : http://mojomonkeycoding.com/
Xith : http://xith.org/tiki-index.php

They all are. I think what you really mean is "which are Scene-graph based?". A quick search will reveal that 3D engines come in three forms:

OpenGL binding
Scenegraph
Both combined in one

OpenGL binding's are normally rather up-front about being just OGL. For the rest, it's actually very hard to write a 3D engine without writing a scenegraph, so you don't really need to worry.

There's a frequently maintained list at:

http://javagamesfactory.org/tech.html

and if you find any others that are any good you should send them the details.