Sharing jar files across multiple web sites

Question

Dear all,
We have an applet as part of an embedded device. I wish to share the jar files across multiple devices. i.e. Accessing 192.168.0.1 shouldn't download the jar files again if the same jar files exist in the cache as a result of download from 192.168.0.2. We are having very large applet jar files, hence reducing download times is a top priority. Is there some way to do that ? Will java web start help in this ?
regards,
Jay

Answer 1

generally for avoiding applet downloading again the best solution is to use applet cahing, just add cache_archive in your html code (for full reference please go to the jdk javadoc ). Of course the problem are diffrent ips 192.168.0.1 and 192.168.0.2, applet caching will work ONLY for one ip, when you serv second sever name/diffrent ip client jvm will treat this applet as something new and will download it . The best solution i think is to sever everything on one server page/ip etc, but as you mentioned it is not good solution.
Well you can make it if you want to serve your big jar file on diffrent ips/severs, How? You should ctreate small certified applet jar , inside it should be code that will download your huge jar file from any location you want and store IT on CLIENT machine, becouse that jar will be certified so applet with file functions will not ask user to accept dialogs etc, so that applet will create locall on client machine little cache were all files that were downloaded will be stored. And again when user will acess your page that small certfied jar file will check if cache folder exist and if inside it is your huge file.
cheers