Problem facing while creating EJB3 application in Netbeans

[Karnati Sudhakar]

STEP 1:
1. Chose File > New Project from the main menu.
2. Selected Enterprise Application from the Enterprise category and clicked Next.
3. Named the project Chapter2 and set the project location.
4. Set the server to GlassFish and set the Java EE Version to Java EE 5.
6. Selected the options 'Create EJB Module' and 'Create Application client model'
7. Clicked on Finish.

STEP 2: Created Session Bean

Expanded the Chapter2-ejb module and in the source packages created two java files as follows:
HelloUser.java

package ejb3inaction.example;
import javax.ejb.Local;
@Local
public interface HelloUser {                                       
    public void sayHello(String name);
}

and HelloUserBean.java

package ejb3inaction.example;
import javax.ejb.Stateless;
@Stateless                                                         
public class HelloUserBean implements HelloUser {                   
    public void sayHello(String name) {
        System.out.println("Hello " + name + " welcome to EJB 3 In Action!");
    }
}

STEP3: Created client code:

Expanded the Chapter2-app-client module and in the source packages created two java files like below:

Main.java

package chapter2;
import ejb3inaction.example.HelloUserClient;
 
public class Main {
 
   
    public static void main(String[] args) {
     
        HelloUserClient.main("Ramesh");
    }
 
}

and HelloUserClient.java

package ejb3inaction.example;
 
import javax.ejb.EJB;
 
public class HelloUserClient {
      @EJB(name="",beanInterface=HelloUser.class)
        private static HelloUser helloUser;
 
       public  static void main(String args) {
     
         
             helloUser.sayHello("Curious George");
             System.out.println("Invoked EJB successfully .. see server console for output");     
        }
}

other than above mentioned i did not touch anything in the Netbeans6.0 IDE.I did not touch any XML file also.

I just clicked on the run project and i am getting this error:
Quote:

Aug 29, 2008 1:26:00 AM com.sun.enterprise.appclient.MainWithModuleSupport <init>
WARNING: ACC003: Application threw an exception.
java.lang.NullPointerException
at ejb3inaction.example.HelloUserClient.main(HelloUserClient.java:12)
at chapter2.Main.main(Main.java:10)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.sun.enterprise.util.Utility.invokeApplicationMain(Utility.java:266)
at com.sun.enterprise.appclient.MainWithModuleSupport.<init>(MainWithModuleSupport.java:449)
at com.sun.enterprise.appclient.MainWithModuleSupport.<init>(MainWithModuleSupport.java:259)
at com.sun.enterprise.appclient.Main.main(Main.java:200)
Exception in thread "main" java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at com.sun.enterprise.appclient.MainWithModuleSupport.<init>(MainWithModuleSupport.java:461)
at com.sun.enterprise.appclient.MainWithModuleSupport.<init>(MainWithModuleSupport.java:259)
at com.sun.enterprise.appclient.Main.main(Main.java:200)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.sun.enterprise.util.Utility.invokeApplicationMain(Utility.java:266)
at com.sun.enterprise.appclient.MainWithModuleSupport.<init>(MainWithModuleSupport.java:449)
... 2 more
Caused by: java.lang.NullPointerException
at ejb3inaction.example.HelloUserClient.main(HelloUserClient.java:12)
at chapter2.Main.main(Main.java:10)
... 8 more
Java Result: 1

I did a lot of search to fix this issue but could not succeed.Please help me out from this.I am new to EJB world.

Please help me out

Thanks
Sudhakar karnati