Try...
An Introduction to Programming AR and VR Applications in Java 3D
http://www.sdsc.edu/~nadeau/Courses/VR99/
by Henry Sowizral & Dave Nadeau
it has some point samples in the tutorial.
there is only sample code but you should get the Idea.
The first sample I did was a spinning point box.
http://www.rcia.com/wulf/Java3D/HelloUniverse.html
I'll try to post the modified (Sun) source.
(please excuse the messy code, it wasn't made for public consuption)
http://www.rcia.com/wulf/Java3D/HelloUniverse.java
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