comment inserer de l'audio dans mon applet ?

salut a tous

J'ai un applet qui fait rebondir une balle et je voudrais y faire activer un son a chaque fois que la balle rebondi, mais je sais pas comment quel type d'audio java peut lire , comment l' implementer dans mon code.
toute aide me sera utile merci beaucoup


voici le code :

[
import java.awt.*;
import java.awt.image.BufferedImage;
import javax.swing.*;
import javax.swing.JApplet;

public class AnimeBall extends JApplet {
Motivator fullMover;
Motivator fadeMover;

public void init() {
getContentPane().add(getContent());
}

public void start() {
fullMover.start();
fadeMover.start();
}

public void stop() {
fullMover.stop();
fadeMover.stop();
}

private JTabbedPane getContent() {
FullTrail fullTrail = new FullTrail();
fullMover = new Motivator(fullTrail);
FadingTrail fader = new FadingTrail();
fadeMover = new Motivator(fader);
JTabbedPane tabbedPane = new JTabbedPane();
tabbedPane.addTab("full trail", fullTrail);
tabbedPane.addTab("fading trail", fader);
return tabbedPane;
}
}


class FullTrail extends JPanel implements Movable {
BufferedImage offscreen;
Point loc;
int dx = 3;
int dy = 2;
final int D = 30;

protected void paintComponent(Graphics g) {
if(offscreen == null) {
initOffscreen();
}
g.drawImage(offscreen, 0, 0, this);
Graphics2D g2 = (Graphics2D)g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2.setPaint(Color.red);
g2.fillOval(loc.x-D/2, loc.y-D/2, D, D);
}

public void moveBall() {
updateOffscreen();
checkBoundries();
loc.x += dx;
loc.y += dy;
repaint();
}

private void checkBoundries() {
if(loc.x - D/2 + dx < 0 || loc.x + D/2 + dx > getWidth())
dx *= -1;
if(loc.y - D/2 + dy < 0 || loc.y + D/2 + dy > getHeight())
dy *= -1;
}

private void initOffscreen() {
int w = getWidth();
int h = getHeight();
loc = new Point(w/2, h/2);
offscreen = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = offscreen.createGraphics();
g2.setColor(UIManager.getColor("Panel.background"));
g2.fillRect(0,0,w,h);
g2.dispose();
}

private void updateOffscreen() {
Graphics g = offscreen.getGraphics();
Graphics2D g2 = (Graphics2D)g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2.setPaint(new Color(240,200,240));
g2.fillOval(loc.x-2, loc.y-2, 4, 4);
g2.dispose();
}
}

class FadingTrail extends JPanel implements Movable {
Point[] trail;
Point loc;
int dx = 2;
int dy = 3;
final int D = 30;

public FadingTrail() {
int trailLength = 20;
trail = new Point[trailLength];
for(int j = 0; j < trail.length; j++) {
trail[j] = new Point();
}
loc = new Point(200,100);
}

protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D)g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
Graphics2D copy = (Graphics2D)g.create();
copy.setPaint(new Color(240,200,240));
float alpha = 1f;
float alphaInc = 1f/20.5f;
AlphaComposite ac = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, alpha);
for(int j = 0; j < trail.length; j++) {
copy.setComposite(ac);
copy.fillOval(trail[j].x-2, trail[j].y-2, 4, 4);
alpha -= alphaInc;
ac = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, alpha);
}
copy.dispose();
g2.setPaint(Color.red);
g2.fillOval(loc.x-D/2, loc.y-D/2, D, D);
}

public void moveBall() {
updateTrail();
checkBoundries();
loc.x += dx;
loc.y += dy;
repaint();
}

private void checkBoundries() {
if(loc.x - D/2 + dx < 0 || loc.x + D/2 + dx > getWidth())
dx *= -1;
if(loc.y - D/2 + dy < 0 || loc.y + D/2 + dy > getHeight())
dy *= -1;
}

private void updateTrail() {
for(int j = trail.length-1; j > 0; j--) {
trail[j].setLocation(trail[j-1].getLocation());
}
double theta = Math.atan2(dy,dx) + Math.PI;
int x = loc.x + (int)((D/2)*Math.cos(theta));
int y = loc.y + (int)((D/2)*Math.sin(theta));
trail[0].setLocation(x, y);
}
}

interface Movable {
public void moveBall();
}

class Motivator implements Runnable {
Movable movable;
Thread thread;
boolean keepMoving;

public Motivator(Movable m) {
movable = m;
}

public void run() {
while(keepMoving) {
try {
Thread.sleep(50);
} catch(InterruptedException e) {
keepMoving = false;
}
movable.moveBall();
}
}

public void start() {
if(!keepMoving) {
keepMoving = true;
thread = new Thread(this);
thread.setPriority(Thread.NORM_PRIORITY);
thread.start();
}
}

public void stop() {
keepMoving = false;
thread.interrupt();
thread = null;
}
}
]

apres quelques recherche, je prefere ecouter un son en boucle pendant que mon applet s'execute, je le rappelle mon applet fait rebondir une ball au hasard. J'ai changer mon code pour qu'il lise un fichier son gong.au mais ca ne le lit pas.
pouvez vous me dire ou est ce que j'ai un probleme svp.

mon fichier gong.au est dans le meme dossire que mes fichier class

le nom de mon fichier est AnimeBall.java

[CODE]
import java.applet.Applet;
import java.applet.AudioClip;
import java.awt.*;
import java.awt.image.BufferedImage;
import javax.swing.*;
import javax.swing.JApplet;

public class AnimeBall extends JApplet {
Motivator fullMover;
Motivator fadeMover;

public void init() {
getContentPane().add(getContent());
}

public void start() {
fullMover.start();
fadeMover.start();
}

public void stop() {
fullMover.stop();
fadeMover.stop();
}

private JTabbedPane getContent() {
FullTrail fullTrail = new FullTrail();
fullMover = new Motivator(fullTrail);
FadingTrail fader = new FadingTrail();
fadeMover = new Motivator(fader);
JTabbedPane tabbedPane = new JTabbedPane();
tabbedPane.addTab("full trail", fullTrail);
tabbedPane.addTab("fading trail", fader);
return tabbedPane;
}
}


class FullTrail extends JPanel implements Movable {
BufferedImage offscreen;
Point loc;
int dx = 3;
int dy = 2;
final int D = 30;

protected void paintComponent(Graphics g) {
if(offscreen == null) {
initOffscreen();
}
g.drawImage(offscreen, 0, 0, this);
Graphics2D g2 = (Graphics2D)g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2.setPaint(Color.red);
g2.fillOval(loc.x-D/2, loc.y-D/2, D, D);
}

public void moveBall() {
updateOffscreen();
checkBoundries();
loc.x += dx;
loc.y += dy;
repaint();
}

private void checkBoundries() {
if(loc.x - D/2 + dx < 0 || loc.x + D/2 + dx > getWidth())
dx *= -1;
if(loc.y - D/2 + dy < 0 || loc.y + D/2 + dy > getHeight())
dy *= -1;
}

private void initOffscreen() {
int w = getWidth();
int h = getHeight();
loc = new Point(w/2, h/2);
offscreen = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = offscreen.createGraphics();
g2.setColor(UIManager.getColor("Panel.background"));
g2.fillRect(0,0,w,h);
g2.dispose();
}

private void updateOffscreen() {
Graphics g = offscreen.getGraphics();
Graphics2D g2 = (Graphics2D)g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2.setPaint(new Color(240,200,240));
g2.fillOval(loc.x-2, loc.y-2, 4, 4);
g2.dispose();
}
}

class FadingTrail extends JPanel implements Movable {
Point[] trail;
Point loc;
int dx = 2;
int dy = 3;
final int D = 30;

public FadingTrail() {
int trailLength = 20;
trail = new Point[trailLength];
for(int j = 0; j < trail.length; j++) {
trail[j] = new Point();
}
loc = new Point(200,100);
}

protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D)g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
Graphics2D copy = (Graphics2D)g.create();
copy.setPaint(new Color(240,200,240));
float alpha = 1f;
float alphaInc = 1f/20.5f;
AlphaComposite ac = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, alpha);
for(int j = 0; j < trail.length; j++) {
copy.setComposite(ac);
copy.fillOval(trail[j].x-2, trail[j].y-2, 4, 4);
alpha -= alphaInc;
ac = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, alpha);
}
copy.dispose();
g2.setPaint(Color.red);
g2.fillOval(loc.x-D/2, loc.y-D/2, D, D);
}

public void moveBall() {
updateTrail();
checkBoundries();
loc.x += dx;
loc.y += dy;
repaint();
}

private void checkBoundries() {
if(loc.x - D/2 + dx < 0 || loc.x + D/2 + dx > getWidth())
dx *= -1;
if(loc.y - D/2 + dy < 0 || loc.y + D/2 + dy > getHeight())
dy *= -1;
}

private void updateTrail() {
for(int j = trail.length-1; j > 0; j--) {
trail[j].setLocation(trail[j-1].getLocation());
}
double theta = Math.atan2(dy,dx) + Math.PI;
int x = loc.x + (int)((D/2)*Math.cos(theta));
int y = loc.y + (int)((D/2)*Math.sin(theta));
trail[0].setLocation(x, y);
}
}

interface Movable {
public void moveBall();
}

class Motivator implements Runnable {
Movable movable;
Thread thread;
boolean keepMoving;

public Motivator(Movable m) {
movable = m;
}

public void run() {
while(keepMoving) {
try {
Thread.sleep(50);
} catch(InterruptedException e) {
keepMoving = false;
}
movable.moveBall();
}
}

public void start() {
if(!keepMoving) {
keepMoving = true;
thread = new Thread(this);
thread.setPriority(Thread.NORM_PRIORITY);
thread.start();
}
}

public void stop() {
keepMoving = false;
thread.interrupt();
thread = null;
}
}
class SoundApplet extends Applet {

public void init() {

super.init();


AudioClip gong = getAudioClip(getDocumentBase(), "gong.au");
gong.loop();

}
}
[CODE]