if (_instance == null) {  initialize();  _instance = this; }
System.setProperty("python.cachedir", System.getProperty("user.home") + File.separator + ".tn5250j" + File.separator); if (_instance == null) {  initialize();  _instance = this; }
   public GlobalConfigure() {      if (_instance == null) {         // initialize the settings information         initialize();         // set our instance to this one.         _instance = this;      }   }