Any good 3D library?

 Hi,
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 I am currently looking for a 3D library (preferably a java one to so
some visual 3D rotations and translations I would like to perform on
basic 3D geometric solid objects, say regular (, or non-regular)
tetrahedra and icosahedra
~
 Can you tell me of any you know of and how well do they do  3D
modeling? Preferably with some links showcasing features and
possibilities
~
 Thank you
 lbrtchx