Applet not starting in web browser

I'm trying to get a "hello world" applet to work in a web page. I can compile it with javac and run the resulting clas with java just fine. System, Windows XP Pro SP1, Netscape 7.1, Java SDK J2RE1.4.2_05.
Any help is greatly appreciated!
Thanks,
Mark
Following are the java source, html and errors.
welcome1.java
public class welcome1 {
public static void main( String args[])
int x=1;
while(x <=10)
System.out.println("Welcome to java programming! " + x);
x++;
page.html
<html>
<body>
<applet code="welcome1.class" width="300" height="100">
</applet>
</body>
</html>
Errors
bottom of web browser
Applet welcome1 notinited
In Java Console
java.lang.ClassCastException
     at sun.applet.AppletPanel.createApplet(Unknown Source)
     at sun.plugin.AppletViewer.createApplet(Unknown Source)
     at sun.applet.AppletPanel.runLoader(Unknown Source)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)

An applet class is slightly different from an application class. Better take a look at
http://java.sun.com/developer/onlineTraining/Programming/BasicJava1/applet.html

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