New to EJB world… Null pointer exception in EJB client

Question

I am learning EJB and I am trying to execute the Helloworld example given in EJB In Action book.

My app server is JBoss, I created the Jar file for the bean class an

Answer 1

You would have to make two changes:

Replace the @EJB dependency injection with JNDI lookup. Dependency Injection is not supported for POJOs in EJB 3 (Don't know about EJB 3.1 though )

Then, the interface has to be a remote interface. The reason is that, the client here is a standalone java program - It would be running in JVM different from the web-app JVM.

Both dependency injection through @EJB and having the interface as @Local should work if the client was a servlet in the same server.