[jboss-user] [Beginners Corner] - First EBJ: Session Bean, Eclipse, JBOSS AS

[joeroyall]

I am having trouble with a basic session bean.  My understanding is that I don't need to initiate a session bean object because the EE framework will do it for me.  Am I missing anything in my config?

Eclipse: Version: 3.3.1.1
	WST 2.0.2
	J2ee Standard Tools 2.0.2
JBOSS AS: 4.2


1. File --> New --> Project... --> EJB --> EJB Project
	Target Runtime JBoss v4.2
	Default Configuration for JBoss v4.2
	Project Facet EBJ Module 3.0 Java 5.0

2. Create package 
	com.example.helloworld

3. Create interface -> HelloSessionLocal.java
 
package com.example.helloworld;

import javax.ejb.Local;

@Local
public interface HelloSessionLocal {
	public void hello();

}

4. Create class HelloSession.java

package com.example.helloworld;

import javax.ejb.Stateless;

@Stateless
public class HelloSession implements HelloSessionLocal {
	
	public HelloSession(){
	}
	public void hello(){
		System.out.println("hello from ejb stateless bean");
	}
}


5. New --> Project... --> Dynamic Web Project 
	HelloServlet

6. Properties --> J2EE Module Dependencies --> HelloWorld

7. New --> Other --> Web --> Servlet
	HelloServlet.java

package com.example.helloservlet;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.example.helloworld.*;

import javax.ejb.EJB;

 public class HelloServlet extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet {
	 @EJB
	 public static HelloSession helloSession;
	 static final long serialVersionUID = 1L;
   

	public HelloServlet() {
		super();
	}   	 	  	  	  
	

	public void init() throws ServletException {
		System.out.println("hello servlet");
		helloSession = new HelloSession();
		helloSession.hello();
		super.init();
	}   
}


8. Run as --> Jboss 4.2 Server --> Configured Projects HelloServlet, HelloWorld

9. Console Output
16:13:35,727 INFO  [STDOUT] hello servlet
16:13:35,747 ERROR [[/HelloServlet]] StandardWrapper.Throwable
java.lang.NullPointerException

If I instiate HelloSession with   	helloSession = new HelloSession(); 	in main

then console output is as expected
116:15:21,516 INFO  [STDOUT] hello servlet
16:15:21,522 INFO  [STDOUT] hello from ejb stateless bean





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