In real I'm just can convert applets to jar files for test by program DJ java re compile can do it
I try convert jar file by way archive jar file that we use with class file too but no have succeed
I paraper example for teachers here in my work is this applets,, i typing page by HTML download class files
Offline users for have class files,, i will upload zip file have class files and HTML  page for users can join and download if want .