This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
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Joined: Mar 22, 2005
As to your question, I don't know what "class file maintenance" means, but you can find some pointers about applet-to-servlet communication here.