Applet is not appearing in Browser

I created a standalone application that works (uses Swing). I wanted to place it on a webpage as an applet.
this is wrking in applet viewer, whn i tryed in HTML using the applet tag calling the class file the applet is still not showing. in the browser ..
i am getting this error
arning: running 1.2 version of SwingUtilities
java.lang.InstantiationException: JApplet1
     at com/ms/applet/BrowserAppletFrame.newInstance (BrowserAppletFrame.java)
     at com/ms/applet/AppletPanel.processSentEvent (AppletPanel.java)
     at com/ms/applet/AppletPanel.processSentEvent (AppletPanel.java)
     at com/ms/applet/AppletPanel.run (AppletPanel.java)
     at java/lang/Thread.run (Thread.java)
can u plz! tell me the solution for this
nandhu

so did you have a standalone application or an applet? they are totally different... also, check and see if you have java plug in for your broswer...

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