Calling SessionBean through @EJB Annotation

Question

Hello All
I was a fan of J2EE but now have just started working on JavaEE after hearing so much about it. I read a lot of tutorials and now i am using NetBeans IDE 5.5 and the application server is JBoss.
My application scenario is:
1. Stateless Session Bean
2. Business Interface (Remote)
3. Client
Code for Stateless Session Bean
package com.testing;
import javax.ejb.*;
import javax.annotation.*;
@Remote({HelloRemote.class})
@Stateless
public class HelloBean implements com.testing.HelloRemote {
public String helloWorld()
        String value = "hello there";
        return value;
}Code for Remote Business Interface:
package com.testing;
import javax.ejb.Remote;
* This is the business interface for Hello enterprise bean.
@Remote
public interface HelloRemote {
    public String helloWorld();
}Finally code for Client:
package enterpriseapplication3;
import java.io.*;
import java.util.*;
import javax.ejb.EJB;
import javax.ejb.*;
import javax.naming.*;
import java.rmi.*;
import com.testing.*;
public class Main {
    public Main()
     @EJB static private com.testing.HelloRemote hello;
    public void call()
        try
             String value = hello.helloWorld();
             System.out.println(value);
        catch(Exception e)
            e.printStackTrace();
     * @param args the command line arguments
    public static void main(String[] args) throws Exception
        Main main = new Main();
        main.call();
}The problem is when i run my application i get:
java.lang.NullPointerException
        at enterpriseapplication3.Main.call(Main.java:42)
        at enterpriseapplication3.Main.main(Main.java:57)Please help me out with this issue as I cannot resolve it even though I have tried so many different tutorials but no luck.
best regards
rabbia

Answer 1

You'll need to check the JBoss documentation to see how to invoke the client application.
This kind of client is referred to as an Application Client. In order for the injection to work
there must be some special system code provided by your vendor that initializes the client
app. In the Java EE SDK, it's called the "appclient" command.
--ken