JavaFX periodic background task

Question

I try to run in JavaFX application background thread periodically, which modifies some GUI property.

I think I know how to use Task and Service

Answer 1

You can use Timeline for that matter:

Timeline fiveSecondsWonder = new Timeline(
                 new KeyFrame(Duration.seconds(5), 
                 new EventHandler() {

    @Override
    public void handle(ActionEvent event) {
        System.out.println("this is called every 5 seconds on UI thread");
    }
}));
fiveSecondsWonder.setCycleCount(Timeline.INDEFINITE);
fiveSecondsWonder.play();

for background processes (which don't do anything to UI) you can use old good java.util.Timer:

new Timer().schedule(
    new TimerTask() {

        @Override
        public void run() {
            System.out.println("ping");
        }
    }, 0, 5000);