void propDialog_actionPerformed(ActionEvent evt) {
   String cmd = evt.getActionCommand();
   if (cmd.equals("Cancel") == false) {
     createContext(
         propDialog.getHost(),
         propDialog.getPort(),
         propDialog.getCommunityName(),
         propDialog.getSocketType());
     sendGetRequest();
   } else {
     System.exit(0);
   }
 }
  public void init() {
    try {
      createPropertyDialog();
      propDialog.setVisible(true);
      propDialog.toFront();

      /*
       */
      createContext(
          propDialog.getHost(),
          propDialog.getPort(),
          propDialog.getCommunityName(),
          propDialog.getSocketType());
      sendGetRequest();
    } catch (Exception exc) {
      exc.printStackTrace();
    }
  }