public void eatAnApple()
{
    if ( ! getObjectsInRange(50, Apple.class).isEmpty() )
    {
        getWorld().removeObject((Actor)getObjectsInRange(50, Apple.class).get(0));
        applesEaten++; // or whatever else you do when an apple is eaten
    }
}

    public void turn(){
        List list = getObjectsInRange(50,Apple.class);
        int x = getObjectsInRange(50,Apple.class).get(0).getX();
        int y = getObjectsInRange(50,Apple.class).get(0).getY();
        if(list.size()  > 0){
            turnTowards(x,y);
        }
        else{
            move(100);
        }
    }