Viewer Help

private class KeyInput extends KeyAdapter{
    @Override
    public void keyTyped(KeyEvent e){
        if(e.getID() == KeyEvent.VK_W){
        moveBall(0,-5);
        }else if(e.getID() == KeyEvent.VK_S){
        moveBall(0,5);
        }else if(e.getID() == KeyEvent.VK_A){
        moveBall(-5,0);
        }else if(e.getID() == KeyEvent.VK_D){
        moveBall(5,0);
        }
    }
}