I give up, it's either I'm stupid or Deitel's way of explaining with codes, just doesn't work for this particular chapter on Jini and P2P. I think if I read Deitel's firs book on Java, I would've got better idea about Jini.
Anyway, I can't get ch28 example to work, I mean it compiles and run, but the peers don't talk to each other..
I hate using people codes without really understand what it does.. So I am resolved to learn Jini from ground up.
Jini resources to print and read: http://v2getsmart.jini.org/nhttp://pandonia.canberra.edu.au/java/jini/tutorial/Jini.xml