JavaFX Thread.Sleep() or pause() in ActionEvent

Question

I'm new at JavaFX and I was trying whenever I press the button, first , it shows some info on a label, then change the scene. Everything is OK actually, but I just couldn't find how to wait for a specific amount of time before the change scene.

I tried with Thread.sleep() like this: (its wait properly, but somehow it doesn't change the text of the label)

    @FXML
public void pressButton(ActionEvent event) throws IOException, InterruptedException {
    user = new User(inUsername.getText(),inPassword.getText());
    lLeftBottom.setText(user.getUserInfo());
    Thread.sleep(2000);
    changeScene2(event);
}

(edit, thanks to Slaw for solution about the pause()'s actionEvent problem)

and also I try about JavaFX's pause method, but it doesn't wait, still jumping the other scene immediately

    @FXML
public void pressButton(ActionEvent event) throws IOException, InterruptedException {
    user = new User(inUsername.getText(),inPassword.getText());
    PauseTransition pause = new PauseTransition(Duration.seconds(3));
    pause.setOnFinished(e ->{
        lLeftBottom.setText(user.getUserInfo());
    });
    pause.play();
    changeScene2(event);
}

How can I make this delay?

Answer 1

You've used the PauseTransition backwards. If you want to change the scene after the pause, that is the part that needs to be in your onFinished event handler:

@FXML
public void pressButton(ActionEvent event) throws IOException, InterruptedException {
    user = new User(inUsername.getText(),inPassword.getText());
    PauseTransition pause = new PauseTransition(Duration.seconds(3));
    pause.setOnFinished(e ->{
        changeScene2(event);
    });
    lLeftBottom.setText(user.getUserInfo());
    pause.play();
}

Answer 2

About your first question: Try using try catch. Worked out for me.

public static void main(String[] args) {
    System.out.println("test1");
    try {
        Thread.sleep(2000);
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    System.out.println("test2");
}