JavaFX 2.0 :: How To Reload Screen When Changing Languages

I'm beginner with javaFX and i need to change language of the screen. but how to reload the screen when the language was changed. The application have a button where have the language available. I want just refresh screen when the user change language. Here is the start method to show the stage.

    @Override
    public void start(Stage stage) throws Exception
    {
        this.stage = stage;
        Locale locale = Locale.getDefault();
        ResourceBundle rb = ResourceBundle.getBundle("resources/Label",locale);

[Code] .....

Here is the function to change the language(in the same class with start function),the rb is the new ResourceBundle:

    public void refresh(ResourceBundle rb)
    {
          //change the language here
     }
  
1. I don't want to use the resourceBundle to get value in resource file and set label in scene one by one.like following:

this.btnLabel.setText(rb.getString(key.test));
...
 
2. I don't want to reload the scene,like following:

    public void refresh(ResourceBundle rb)
    {
         try
        {
            loader = new FXMLLoader(getClass().getResource("FXMLDocument.fxml"),rb);
            root = (Parent)loader.load();

[Code] .....
 
So do we have a solution to just set the resourceBundle and reload the scene easier?