Beginner is in the right place.
Yes, beginner ( original poster ) is likely staring at the screen right now, fingers ready to dance .... we know if poster keeps reading and trying some useful progress will be made. May I suggest appletviewer?
If poster can ship applets, it may be useful to eliminate some help questions by having the end-user be instructed to use appletviewer. We could also show the html file that could be used to run the applet. Poster needs to spec how the dot jar file will be distributed if users cannot get on the web, ostensibly this would be file sharing between friends.