Have a look at the
Wiki page about iLiad software. There are some links to introductory topics.
Spoiler: It won't be easy to run these jars, if possible at all, as 1. the jars contain J2ME specific classes, and 2. the iLiad VM is a very stripped one, i.e. only a rudimentary AWT implementation.
But don't be afraid to try it, maybe some magic happens
Edit: Please also search for
java intent on the forums, this could help to find an introduction into the topic.