title: JavaFX - setText() is not working
body: <p>I cant set the text of a Textfield. There is no error but the Textfield is still empty.
  The rest of the program is working, the method is called and the System.out.println(...) prints the right text.
  So the problem is, the text of the textfield cant be set. Even if i just write textField.setText("0"); the textfield is still empty.
  When I set the text for the textfield under public void initialize(...) it also works. So why doesn't it work in setCurrentInfo?</p>
  
  <pre><code>@FXML
  private TextField textField;
  
  private Info currentInfo;
  
   @Override
  public void initialize(URL url, ResourceBundle rb) {
  }   
  
  public void setCurrentInfo(Info currentInfo) {
      textField.setText(currentInfo.getpw1());
      System.out.println(currentInfo.getpw1());
      this.currentInfo = currentInfo;
  }
  </code></pre>
  
  <p>The part of the controller where setCurrentInfo is called:</p>
  
  <pre><code>@FXML
  private void handleBtn1(ActionEvent event) throws Exception{
      Info info = new Info(textFieldA.getText(), textFieldB.getText());
      FXMLLoader loader = new FXMLLoader();
      loader.setLocation(getClass().getResource("FXMLPassword.fxml"));
      loader.load();
      Stage stage; 
      Parent root;
      if(event.getSource()==btn1){
          //get reference to the button's stage         
          stage=(Stage) btn1.getScene().getWindow();
          //load up OTHER FXML document
          root = FXMLLoader.load(getClass().getResource("FXMLPassword.fxml"));
      }
      else{
          stage=(Stage) btn1.getScene().getWindow();
          root = FXMLLoader.load(getClass().getResource("FXMLDocument.fxml"));
      }
      //create a new scene with root and set the stage
      Scene scene = new Scene(root);
      stage.setScene(scene);
      stage.show();
      FXMLPasswordController passwordController = loader.getController();
      passwordController.setCurrentInfo(info);
      }
  </code></pre>