Hi,
what would you use for saving games or settings in an applet? local file-system access requires the user to give you permission via a scary looking pop-up window. In flash I just use a Local Shared Object, which is pretty easy to use and gives me enough room for everything I need to save. With js you can use cookies or (with html5) LocalStorage (which is much better).
What do you use with java applets?
Thanks,
Ido.