1Scene scene = new Scene(root, 400, 300);
2 
3scene.setOnKeyPressed(e -> {
4    switch (e.getCode()) {
5        case UP:    player.moveUp();    break;
6        case DOWN:  player.moveDown();  break;
7        case LEFT:  player.moveLeft();  break;
8        case RIGHT: player.moveRight(); break;
9    }
10});