EJB3 and Stateful question

[Luca Merolla]

Hello everyone,

I'm a newbie in the EJB3 world. I have started a university project with the purpose of learning EJB3. I will use Jboss on the server side, and i would like to connect to that with a java application made with Java Web Start.

Now I have faced some problems and I don't have enough EJB knowledge about whichever technology should i use to solve it, here it is:

The server is a kind of chat server, it generates Room for chat with N places available and then people with the JNLP client (once logged in) can chose the Room to chat.

My main question now is how can i generates Rooms without the action of the clients (it should be something periodically) and how can different Users once authenticated join the same Room. Every suggestion is very welcome.

Thanks in advance,
Luca