The java desktop is supported by SUN (it's based on gnome project) on solaris platform.
To configure it have a look on the the docs.sun.com website (do a simple search using "java desktop" keywords).
KDE is a freeware, don't think it's supported.
There must be something wrong with the gnume installation part on my Sol 10 box.
Everytime I try to run a gtk based app it says
% gtk-demo
No fonts found; this probably means that the fontconfig
library is not correctly configured. You may need to
edit the fonts.conf configuration file. More information
about fontconfig can be found in the fontconfig(3) manual
page and on http://fontconfig.org
I suspect that is the reason that when I try the Java Desktop logon session it just aborts it (after a brief display of the splash screen) back to the the dt logon screen.
Does anyone know how to use fontconfig for the fonts?
Mind you that I installed everything off of the Sol 10 CDs.
The problem with font configuration was that the gnome (gtk) apps were looking at '/usr/local/etc/fonts' for font definitions as opposed to '/etc/fonts' .
I simply copied '/etc/fonts/fonts.conf' on '/usr/local/etc/fonts/fonts.conf'.
In general one needs to check that the 'font-cache' service is enabled anf online:
% svcs -x svc:/application/font\*
svc:/application/font/stfsloader:default (Standard Type Services Framework (STSF) Font Server loader)
State: online since Wed Apr 06 20:07:27 2005
Impact: None.