I'm having a problem with an Applet showing up on a webpage. I use the html code:

<applet code="ArticleSpinItApplet.class" height="800" width="100%"></applet>

The outline of the applet shows up, but it says there's an error. Here is the error below.

XML Code:
java.lang.RuntimeException: java.lang.NoClassDefFoundError: ArticleSpinItApplet$Content
	at sun.plugin2.applet.Plugin2Manager.createApplet(Plugin2Manager.java:3063)
	at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Plugin2Manager.java:1481)
	at java.lang.Thread.run(Thread.java:655)
Caused by: java.lang.NoClassDefFoundError: ArticleSpinItApplet$Content
	at java.lang.Class.getDeclaredConstructors0(Native Method)
	at java.lang.Class.privateGetDeclaredConstructors(Class.java:2357)
	at java.lang.Class.getConstructor0(Class.java:2671)
	at java.lang.Class.newInstance0(Class.java:321)
	at java.lang.Class.newInstance(Class.java:303)
	at sun.plugin2.applet.Plugin2Manager$12.run(Plugin2Manager.java:3005)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:269)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:184)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:176)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
Exception: java.lang.RuntimeException: java.lang.NoClassDefFoundError: ArticleSpinItApplet$Content
Any suggestions?