Clear classloader when exit applet, but not browser

Hi there,
I've got some problems with the classloader.
when i start my applet with the language de, it will correctly name the buttons etc. in german.
in my site it is possible to change the language. after clicking on another lanuage, my applet
restarts with the correct parameters (language=en), but the buttons and so on are still named in
german.
i figured out, that after clearing the classloader cache, the language is the correct one.
how can i clear the classloader cache when i leave the applet, but not the browser?
thanks in advance!

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