All VRML scenes are generated by tiny (~1-2kb) Java Scripts. To see these 3D objects you have to install a VRML viewer plug-in (e.g. "Cortona" by ParallelGraphics). You'll be able to walk through 3D scene, rotate objectes and so on.
More about VRML see at The 3D Web is here by Bob Crispen.
Look at "3D" Java applets if you don't install a VRML viewer plugin yet.