Can I make a class file self destruct?

I would like to be able to access a class file remotely, and send it a
command to self-destruct if it is unlicensed. (We have thieves
distributing our class files without license.)

Can I put some code in the class file to do this?

Maybe access it remotely with...

<applet codebase="http://www.remotesite.com/"; code="myfile.class"...>
<param name="destroyClassFile" value="DoIt">
....

In the class file's code, something like...

String s=getParameter(destroyClassFile");
if (s == "DoIt") {
...code to destroy it
or
...overwrite itself on the server with junk
or
...turn on a function inside the class file to always display a
"this appears to be unlicensed" message
or
... ???
}

Any ideas? How can I send commands to the class file to permanently
change itself?

Thank you for your ideas!

.

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