Java EE (Java Enterprise Edition) General Discussion

Hi,

I have a servlet which calls a session EJB, the server is Glassfish v2:

@Remote
public interface HelloRemote {
public String sayHi();
}

@Stateless(mappedName = "HelloFEJB")
public class HelloFBean implements HelloRemote{
public HelloFBean() {
}

public String sayHi() {
return "Hi and Hello";
}
}

when the EJB is injected in the servlet class(Hellow), everything works, but when the EJB is injected in another class(HelloEJBx), it has null pointer exception, like below, why?

Thanks

public class Hellow extends HttpServlet {

... some methods

private String EJB_Hi() {
HelloEJBx ejb = new HelloEJBx();
return ejb.sayHi();
}

@EJB
private HelloRemote hello = null;
private String EJB_Hi2() {
return hello.sayHi();
}

protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String hi = EJB_Hi2(); // this works
// String hi = EJB_Hi(); // this has null pointer at hello.sayHi() line private class below
}

private class HelloEJBx {
@EJB
private HelloRemote hello = null;
public String sayHi() {
return hello.sayHi();
}
}

}