How to add a object to a exist scene?

How to add a object to a exist scene?
For example,how to add a cube to the scene likewise add a sphere to a 3DMAX scene.thanks

Oh for cryin out loud DUDE it is not something you should be asking. Get a tutorial at java.sun.com and then come back and ask questions. What you are asking is a basic and I mean basic building block of any scene in j3d.
Regards

The magic is BranchGroup. Look at the docs for it.

If you still don’t understand or have problems come back here and post more specific questions.

(Yes, this is sort of a clueless-newbie question but it IS J3D specific so I personally don’t fault him for posting it here.)