I have downloaded jbosscache-core-2.1.0.GA and am having trouble running the demo example.
Issue the command ant run.demo compiles the code and then does nothing. I am running it under JDK 1.6.0
That demo will soon be deprecated. Have you tried the new GUI demo instead?
http://sourceforge.net/project/showfiles.php?group_id=22866&package_id=102339&release_id=584334