Cant figure how splashscreen code works

Question

Hi all, I've been exploring a bit on SplashScreens in java
This question is based on the tutorial located at :
http://java.sun.com/docs/books/tutorial/uiswing/misc/splashscreen.html
Given the code (taken from the tutorial above) :
import java.awt.*;
import java.awt.event.*;
public class SplashDemo extends Frame implements ActionListener {
    static void renderSplashFrame(Graphics2D g, int frame) {
        final String[] comps = {"foo", "bar", "baz"};
        g.setComposite(AlphaComposite.Clear);
        g.fillRect(120,140,200,40);
        g.setPaintMode();
        g.setColor(Color.GREEN);
        g.drawString("Loading "+comps[(frame/5)%3]+"...", 120, 150);
    public SplashDemo() {
        super("SplashScreen demo");
        setSize(300, 200);
        setLayout(new BorderLayout());
        Menu m1 = new Menu("File");
        MenuItem mi1 = new MenuItem("Exit");
        m1.add(mi1);
        mi1.addActionListener(this);
        this.addWindowListener(closeWindow);
        MenuBar mb = new MenuBar();
        setMenuBar(mb);
        mb.add(m1);
        final SplashScreen splash = SplashScreen.getSplashScreen();
        if (splash == null) {
            System.out.println("SplashScreen.getSplashScreen() returned null");
            return;
        Graphics2D g = splash.createGraphics();
        if (g == null) {
            System.out.println("g is null");
            return;
        for(int i=0; i<100; i++) {
            renderSplashFrame(g, i);
            splash.update();
            try {
                Thread.sleep(90);
            catch(InterruptedException e) {
        splash.close();
        setVisible(true);
        toFront();
    public void actionPerformed(ActionEvent ae) {
        System.exit(0);
    private static WindowListener closeWindow = new WindowAdapter(){
        public void windowClosing(WindowEvent e){
            e.getWindow().dispose();
    public static void main (String args[]) {
        SplashDemo test = new SplashDemo();
}The splash screen actually animates a duke waving, then the progress bar starts to move.
However in the code, I can only find the code responsible for drawing the string "foo", "bar", "baz".
My question is :
What is responsible for the waving of hand by duke and the progress bar values increasing? I just cant figure it out.
Thanks for reading! Hope to get some response.

Answer 1

The image is an animated gif, and both the hand-waving and the scrolling are part of the animation. The code in the demo app has nothing to do with it.