close fxml window by code javafx

Question

I need to close the current fxml window by code in the controller     I know stage close   or stage hide   do this in fx   how to implement this in fxml  I tried  private void on btnClose clicked ActionEvent actionEvent            Parent root   FXMLLoader load getClass   getResource  currentWindow fxml                 Scene scene   new Scene root            Stage stage   new Stage                        stage setScene scene           stage show        but it doesn t work   All help will be greatly appreciated  Thanks

User · Answer

I implemented this in the following way after receiving a NullPointerException from the accepted answer.

In my FXML:

<Button onMouseClicked="#onMouseClickedCancelBtn" text="Cancel">

In my Controller class:

@FXML public void onMouseClickedCancelBtn(InputEvent e) {
    final Node source = (Node) e.getSource();
    final Stage stage = (Stage) source.getScene().getWindow();
    stage.close();
}

User · Answer

I found a nice solution which does not need an event to be triggered    FXML private Button cancelButton   close new Event cancelButton  stage  null      FXML private void close Event event          Node  event getSource     getScene   getWindow   hide

User · Answer

finally  I found a solution    Window window       Node  event getSource     getScene   getWindow                 if  window instanceof Stage                     Stage  window  close

User · Answer

give your close button an fx id  if you haven t yet   lt Button fx id  closeButton  onAction   closeButtonAction  gt  In your controller class    FXML private javafx scene control Button closeButton    FXML private void closeButtonAction           get a handle to the stage     Stage stage    Stage  closeButton getScene   getWindow           do what you have to do     stage close

User · Answer

If you have a window which extends javafx application Application  you can use the following method   This will close the whole application  not just the window  I misinterpreted the OP  thanks to the commenters for pointing it out    Platform exit      Example   public class MainGUI extends Application              Button exitButton   new Button  Exit    exitButton setOnAction new ExitButtonListener                public class ExitButtonListener implements EventHandler lt ActionEvent gt        Override   public void handle ActionEvent arg0        Platform exit            Edit for the beauty of Java 8    public class MainGUI extends Application                      Button exitButton   new Button  Exit        exitButton setOnAction actionEvent - gt  Platform exit

User · Answer

I m not sure if this is the best way  or if it works   but you could try   private void on btnClose clicked ActionEvent actionEvent             Window window   getScene   getWindow                if  window instanceof Stage                 Stage  window  close                   Assuming your controller is a Node  Otherwise you have to get the node first  getScene   is a method of Node

User · Answer

Hide doesn t close the window  just put in visible mode  The best solution was    FXML private void exitButtonOnAction ActionEvent event             Stage    Button event getSource    getScene   getWindow     close

User · Answer

stage setOnCloseRequest new EventHandler lt WindowEvent gt          public void handle WindowEvent we                                    Platform setImplicitExit false           stage close                It is equivalent to hide  So when you are going to open it next time  you just check if the stage object is exited or not  If it is exited  you just show   i e   stage show    call  Otherwise  you have to start the stage

[java] close fxml window by code, javafx

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