Java-gnome does not provide precompiled distribution, but packages are avalable on many *nix distributions. For example, Fedora users install Java-Gnome requiered packages with the folowed command :
# yum install glib-java libgtk-java libglade-java
# yum install jpackage-utils
These utilities are used by the launch script.
$ tar -zxf glxdesktop-gui-glxinfo-x.x-with-deps.tar.gz
$ java -version
$ cd glxdesktop-gui-glxinfo-x.x $./glxinfo-gui