Problem when running an applet !!!

hello

iam follow the tutorial for applet here http://java.sun.com/docs/books/tutorial/deployment/applet/getStarted.html

when iam try to run the code :

import javax.swing.JApplet;

import java.awt.Graphics;

publicclass HelloWorldextends JApplet{

publicvoid paint(Graphics g){

g.drawRect(0, 0,

getSize().width - 1,

getSize().height - 1);

g.drawString("Hello world!", 5, 15);

}

}

the appletviewer appear but empty and these error listed at bottom

java.lang.ClassNotFoundException: javaapplication22.Main.class

at sun.applet.AppletClassLoader.findClass(AppletClassLoader.java:168)

at java.lang.ClassLoader.loadClass(ClassLoader.java:306)

iam using netbeans 5.5 beta , what's the wrong ?

thanks advance

[1179 byte] By [eaajea] at [2007-10-3 9:50:22]