EJB Client Code Question

Question

Hi ,
I am learning the basic EJB and trying to write my first piece of code.
I wrote a HelloWorld.jar(EJB) and deployed it in Websphere server.
Then I wrote a standalone java program with main method to access the EJB client. As per the tutorial..
public void callEJB()
          try
               java.util.Properties env = new java.util.Properties();
               env.put(javax.naming.Context.INITIAL_CONTEXT_FACTORY,"com.ibm.websphere.naming.WsnInitialContextFactory");
               env.put(javax.naming.Context.PROVIDER_URL,"iiop://localhost:2809/");               
               javax.naming.Context initial = new javax.naming.InitialContext(env);
               //Object objref =(javax.naming.Context)initial.lookup("java:comp/env/HelloWorld");                              
               Object objref =initial.lookup("ejb/ejb/demo/HelloWorldHome");     
               System.out.println(objref.getClass());
               HelloWorldComponent helloRef = (HelloWorldRemote)PortableRemoteObject.narrow(objref, HelloWorldComponent.class);
          }catch(Exception e){e.printStackTrace();}
How will my code compile???? Because HelloWorldComponent is on the application server, but my client is on a different server. It cannot find the HelloWorldComponent class right??
What should I do now?
Thanks.

Answer 1

What you need is the interface (if you're using EJB3) or home interface class within your client. When you perform a lookup on Websphere it will return a proxy to your remote home interface, so in order to resolve it your client must have it in the classpath.
You don't need to package the actual EJB within your client, just the interface(s) you are using, remembering that the interfaces need to be remote.
Message was edited by:
mtedone