public class test extends Applet implements KeyListener
{
	private BufferedImage vImgOffscreen;
	private int width = 640, height = 480;
	private int x = 50,y = 50;
	private Image player;
	protected boolean m_bKeyboard[] = new boolean[KeyEvent.KEY_LAST+1];

	public void init()
	{
		addKeyListener(this);
		vImgOffscreen = getGraphicsConfiguration().createCompatibleImage(width, height);
		player = getImage(getDocumentBase(), "images/player.png");
		setSize(width,height);
	}

	public void keyPressed(KeyEvent e)
	{
		m_bKeyboard[e.getKeyCode()] = true;

		if (m_bKeyboard[KeyEvent.VK_RIGHT])
			x+=5;
		if (m_bKeyboard[KeyEvent.VK_LEFT])
			x-=5;
		if (m_bKeyboard[KeyEvent.VK_UP])
			y-=5;
		if (m_bKeyboard[KeyEvent.VK_DOWN])
			y+=5;

		repaint();
	}
	public void keyReleased(KeyEvent e) {   m_bKeyboard[e.getKeyCode()] = false;   }
	public void keyTyped(KeyEvent e){}

	public void update(Graphics g) {   paint(g);   }

	public void paint(Graphics g)
	{
	    	renderOffscreen();
	    	// back buffer to the screen
	    	g.drawImage(vImgOffscreen, 0, 0, this);
	}

	public void renderOffscreen()
	{
		Graphics2D g = vImgOffscreen.createGraphics();
		g.setColor(Color.black);
	    g.fillRect(0, 0, width, height);
		g.setColor(Color.blue);
	    g.fillRect(x, y, 16, 32);
		g.dispose();
	}
}