[jboss-user] [EJB 3.0] - [Beginner] Remote Client Dependency Injection doesn't work..

[francis1970]

Hi all !
I have found an EJB 3 example from Oracle site, it uses dependency injection to invoke the EJB. Unfortunately it doesn't work on JBoss....I get a "NullPointerException" when I invoke the sayHello method.

Added also Context information but still doesn't work.

Do I need to add some configuration file to the EJB's jar file so that dependency injection works ???

This is the EJB

package oracle.ejb30;
  | 
  | import javax.ejb.Remote;
  | @Remote
  | public interface HelloWorld {
  |     public void sayHello(String name);
  | }
  | 
  | -----------------------------------------------------
  | package oracle.ejb30;
  | 
  | import javax.ejb.Stateless;
  | 
  | @Stateless
  | public class HelloWorldBean implements HelloWorld {
  |        public void sayHello(String name) {
  |         System.out.println("Hello " + name
  |                 + " from your first EJB 3.0 component ...");
  |     }
  | }
  | -------------------------------------------------------
  | package oracle.ejb30;
  | 
  | import javax.ejb.EJB;
  | import java.util.*;
  | import javax.naming.*;
  | 
  | public class HelloWorldClient {
  |       @EJB
  |         private static HelloWorld helloWorld;
  | 
  |         public  static void main(String[] args) throws NamingException {
  |         Properties env = new Properties();
  |       env.setProperty("java.naming.factory.initial",  "org.jnp.interfaces.NamingContextFactory");
  |       env.setProperty("java.naming.provider.url",  "localhost:1099");
  |       env.setProperty("java.naming.factory.url.pkgs",  "org.jboss.naming");
  |       Context ctx = new InitialContext(env);
  |       
  |        System.out.println("Using Dependency Injection .. invoking sayHello ");
  |        helloWorld.sayHello("Debu Panda!");
  |          }
  | }

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