hello the java master,,I'm still new bie
I want to ask even tools in J2EE,,

I've read in a book that is rich tools Jboss J2EE, J2EE Server sun, Deploy Tool Sun, etc ..
I would ask
1. what Jboss and Sun J2EE server is the same function?
2. What's on eclispse / netbeans there are facilities such as Jboss / server is J2EE? what!
one more ..
EJB was like what?? in tutorial2 I've never seen it like what EJB, which is only just understanding ...

Thank you,,and Terima kasih