Sometimes Applet Launcher is really good for running java applets
it is in Applications/Utilities/
you just type the url of a page with an applet on it, it extracts the relevant code and runs the applet in its own window, no more overhead of your browser!!
note: some times an applet may be in a frame in your browser so control click just outside the applet and go to open frame in new window, then you can copy the url and paste into applet launcher.
Applet launcher also keeps a list of the applets you have used. Easy to get back to your chat without having to find the url again!
here is an example,
http://www.asb.co.nz/calculators/forex-calculator.asp
copy and paste that into applet launcher!
i tried your test links, and they didnt seem to work.
I have never notcied that some applets dont load.
Hopefully all will be fixed in 10.2
edit: it dosent always work!