I'm curious whether or not the HTML required to run applets should be included in byte count. Also what's the current standard for counting bytes with applets? In Eclipse if I recall correctly you can run applets without HTML, however in other IDE's you need the HTML.
We define languages by their implementation here.
So as long as there is an IDE or whatever other interpreter that runs your applet without wrapping it in HTML, you are totally fine.
Of course you have to specify in your submission which setup your code requires to be run successfully.