Java 3D and VRML Working Group
The goal of this group is to improve interoperability between Java3D and VRML, and to maintain and extend the open source Java3D-based VRML97 browser.
http://www.web3d.org/WorkingGroups/vrml-java3d
The advantage of Java based VRML renderer is that it will run in any browser without a plug-in. The disadvantage is that the renderer is not as fast as the VRML plug-ins such as Cosmoplayer was, unless you have an underlying low-level renderer such as OpenGL.