title: Can't start RMI server after stopping it
body: <p>I'm having a problem restarting my RMI registry after it has been stopped:</p>
  
  <pre><code>import java.rmi.*;
  import java.rmi.registry.*;
  import java.rmi.server.UnicastRemoteObject;
  import javax.swing.JOptionPane;
  
  public class CinemaServer
  {
      private Registry registry;
      ClientImpl clientImple; //remote interface implemented class
      private static String title="Cinema Pvt Ltd";
  
      public CinemaServer() {
          try {
              clientImple = new ClientImpl();
              registry=LocateRegistry.createRegistry(3311);
              registry.rebind("RMI_INSTANCE", clientImple);
      } catch (RemoteException e) {
              JOptionPane.showMessageDialog(null, "Can't Start RMI Server",title,JOptionPane.ERROR_MESSAGE);
          }
      }
  
      public void stopServer()
      {
          try {
              registry.unbind("RMI_INSTANCE");
              UnicastRemoteObject.unexportObject(clientImple, true);
          } catch (NotBoundException e) {
              JOptionPane.showMessageDialog(null, "Can't Stop Server",title,JOptionPane.ERROR_MESSAGE);
          }
      }
  }
  </code></pre>
  
  <ol>
  <li><p>I start the server with: <code>CinemaServer ser=new CinemaServer();</code></p></li>
  <li><p>And when I call <code>ser.stopServer();</code> it stops.</p></li>
  <li><p><strong>But I cannot restart it</strong></p></li>
  </ol>
  
  <p>I'm getting:</p>
  
  <pre><code>java.rmi.server.ExportException: internal error: ObjID already in use
  at sun.rmi.transport.ObjectTable.putTarget(Unknown Source)
  at sun.rmi.transport.Transport.exportObject(Unknown Source)
  at sun.rmi.transport.tcp.TCPTransport.exportObject(Unknown Source)
  at sun.rmi.transport.tcp.TCPEndpoint.exportObject(Unknown Source)
  at sun.rmi.transport.LiveRef.exportObject(Unknown Source)
  ...
  </code></pre>