Getting keyboard events with Group

Question

Hi all,
I'm new to JavaFX and I'm trying to handle keyboard events in a group but it doesn't seem to respond when I press the keyboard.
As I understand this is because Group doesn't receive the focus. If that is the case, how can I make it receive focus? I tried calling setFocusTraversable(true) and setFocused(true) but both haven't helped.
If it's not the focus, what is it?
Thanks!

Answer 1

Use requestFocus() instead of  setFocused(true).
Keyboards events work as expected  with a group.
@Override
    public void start(Stage primaryStage) {
        Button btn = new Button();
        btn.setText("Say 'Hello World'");
        Group root = new Group();
        root.addEventFilter(KeyEvent.KEY_PRESSED, new EventHandler<KeyEvent>() {
            public void handle(KeyEvent event) {
                System.out.println(event.getCode());
                event.consume();
        root.getChildren().add(btn);
        Scene scene = new Scene(root, 300, 250);
        primaryStage.setTitle("Hello World!");
        primaryStage.setScene(scene);
        primaryStage.show();
        root.requestFocus();