How to programmatically simulate arrow key pressing in Java FX

I want my JFX application to simulate arrow key presses (when they are registered in textfield), but I can't figure out how to send anything except strings or bytes

I imagine this:

static EventHandler<KeyEvent> KEY() {
    E = new EventHandler<KeyEvent>() {
        @Override
        public void handle(KeyEvent ke) {
            if (ke.getCode().equals(KeyCode.UP)) {
                try {
                    //someObject.SimulateKeyPress(KeyCode.UP);

                    //OR

                    //coolObject.SendKey((char)KEY_UPKEY));
                } catch (Exception ex) {
                    //Teleport goats
                }
            }
        }
    };

    return E;
}

Solution

Using class robot

try {
    Robot r = new Robot();
    //there are other methods such as positioning mouse and mouseclicks etc.
    r.keyPress(java.awt.event.KeyEvent.VK_UP);
    r.keyRelease(java.awt.event.KeyEvent.VK_UP);
 } catch (AWTException e) {
    //Teleport penguins  
 }