You can find a J2ee-api-implemented jar from the library directory of J2EE SDK or any J2EE container. For Jboss, it's jboss-j2ee.jar under %JBoss_HOME%/client/.
In addition, Eclipse is not only an editor to compose your codes and compile them. It's a flexible framework, which enables developers to setup customized development and debugging enviroment using plug-in mechanism.At this point, J2EE developers usually like to plug in a Jboss, then they can run and moniter their j2ee web applications inside Eclipse, that's supposed to be the most exciting thing for Java developers( yeah, it's also free!).
In addition, Eclipse is not only an editor to compose your codes and compile them. It's a flexible framework, which enables developers to setup customized development and debugging enviroment using plug-in mechanism.At this point, J2EE developers usually like to plug in a Jboss, then they can run and moniter their j2ee web applications inside Eclipse, that's supposed to be the most exciting thing for Java developers( yeah, it's also free!).