[hardwired]

Code:

//  <applet code="BB" width="400" height="400"></applet>
import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import java.io.*;
import java.net.*;
import javax.imageio.ImageIO;

public class BB extends Applet implements Runnable {
    private BufferedImage img;
    private Image offscreenImage;
    private Graphics offscr;
    private Thread t;
    private boolean showImage;
    int width;
    int height;
    boolean animate = false;
    // No Ball class -> improvise:
    private Point loc = new Point();
    int xSpeed = 3;
    int ySpeed = 2;

    public void init() {
        showImage = true;
        try {
            String path = "images/geek/geek-----.gif";
                          //"right0.gif"
            URL imageLocation = new URL(getCodeBase(), path);
            img = ImageIO.read(imageLocation);
        } catch (IOException e) {
            System.out.println("image loading failed: " + e.getMessage());
        }
        addMouseListener(ma);
    }

    public void run() {
        while (animate) {
            checkCollisions();
            loc.x += xSpeed;
            loc.y += ySpeed;
            offscr.setColor(Color.white);
            offscr.fillRect(0, 0, width, height);
            offscr.setColor(Color.black);
            offscr.drawRect(0, 0, width - 1, height - 1);
            if (showImage)
                offscr.drawImage(img, loc.x, loc.y, this);
            else
                offscr.fillRect(loc.x, loc.y, 20, 20);
            repaint();
            try {
                t.sleep(100);
            } catch (InterruptedException e) {
                animate = false;
            }
        }
    }

    public void start() {
        while(getWidth() <= 0 || getHeight() <= 0) {
            try {
                Thread.sleep(25);
            } catch (InterruptedException e) {
                System.out.println("startup error");;
            }
        }
        width = getSize().width;
        height = getSize().height;
        if(offscreenImage == null) {
            offscreenImage = createImage(width, height);
            offscr = offscreenImage.getGraphics();
        }
        animate = true;
        t = new Thread(this);
        t.start();
    }

    public void stop() {
        animate = false;
        if(t != null)
            t.interrupt();
        t = null;
    }

    public void paint(Graphics g) {
        g.drawImage(offscreenImage, 0, 0, this);
    }

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

    private void checkCollisions() {
        int w = showImage ? img.getWidth() : 20;
        int h = showImage ? img.getHeight() : 20;
        if (loc.x + xSpeed <= 0 || loc.x + w + xSpeed >= width)
            xSpeed *= -1;
        if (loc.y + ySpeed < 0 || loc.y + h + ySpeed >= height)
            ySpeed *= -1;
    }

    private MouseListener ma = new MouseAdapter() {
        public void mousePressed(MouseEvent e) {
            showImage = !showImage;
        }
    };
}