问Java Rmi中的多线程

EN

public interface NntpServerInterface extends Remote
{
    String Hello() throws  RemoteException;
}

public class NntpServerImpl  extends UnicastRemoteObject implements NntpServerInterface
{
  public   NntpServerImpl() throws RemoteException
  {
  }

  public String Hello()
  {
      return "Hello" ;
  }
}

public class NntpServerRun {
    static Registry reg;

    public static void main(String args []) throws RemoteException, AlreadyBoundException
    {
        reg=LocateRegistry.createRegistry(1111);
        reg.bind("NntpServer", new NntpServerImpl());
        System.out.println("Nntp Server  Started........");
    }
}

public class Client 
{
    static Registry reg;
    static NntpServerInterface ci;

    public static void main(String args )
    {
        reg=LocateRegistry.getRegistry(jTextField1.getText(), 1111);
        ci=(NntpServerInterface)(reg.lookup("NntpServer"));
        System.out.print(ci.Hello());
    }
}