How to run swing on mac

Hi there!
Please can anyone help me through this problem?
I have an java application, using swing, which runs perfectly on a windows machine
But when i try to view the same application on mac it gives me
java.land.NoClassDefFoundError
I have installed MRJ2.2.5 on the machine
also i have put the swingall.jar and mac.jar files in the MRJClasses folder
Further i have also put the MRJPlugin in the IE5 Plugins folder (which is the browser i use to view the application)
Even then my application doesnt work
Please send in some solution ....its very urgent!!
there is a sample program on javas web site....
http://192.9.48.9/products/plugin/1.3.0_01/demos/jfc/SwingSet2/SwingSet2.html
this program gives the same error on mac
Your help in any form will be highly appriciated
Thanks
Shruti

You can't load the Java 1.3 swingset demo because MRJ only implements Java 1.1.8. Try loading a Java 1.1 demo.

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