Mastering JavaFX 10

Adding handlers and timers

In addition to KeyValue, KeyFrame allows us to set a handler which will trigger at the selected Duration. For example, in the preceding timeline, we can change the object color in the middle:

KeyFrame keyFrame = new KeyFrame(Duration.seconds(5),             (ActionEvent event) -> {                circle.setFill(Color.GREEN);            },            new KeyValue(circle.translateXProperty(), 200));KeyFrame keyFrame2 = new KeyFrame(Duration.seconds(10),             new KeyValue(circle.translateYProperty(), 200));Timeline timeline = new Timeline(keyFrame, keyFrame2);

This allows us to make simple timers for events on a UI thread:

Timeline timer = new Timeline(new KeyFrame(Duration.seconds(1),     (event) -> {        System.out.println("every second on the UI thread");})); // no keyvalues ...