Question about CORBA

[Rajesh Khan]

So i was trying an example at http://docs.oracle.com/javase/1.4.2/docs/guide/idl/tutorial/GSserver.html. While generating stubs and skeletons for my idl:
Hello.idl
module HelloApp
{
interface Hello
{
string sayHello();
oneway void shutdown();
};
};

using idlj.exe Hello.idl , i got HelloApp containing _HelloStub,Hello,HelloHelper,HelloHolder,HelloOperations.java

The tutorial recommended that i would also get a HelloPOA class since it uses

class HelloImpl extends HelloPOA {
  private ORB orb;

  public void setORB(ORB orb_val) {
    orb = orb_val; 
  }
    
  // implement sayHello() method
  public String sayHello() {
    return "\nHello world !!\n";
  }
    
  // implement shutdown() method
  public void shutdown() {
    orb.shutdown(false);
  }
}

Any idea where the HelloPOA class is or is the tutorial outdated??