When third party code supports accessing a file by URL and you want to put it onto a classpath you can use this. Your URL is something like classpath:/myfile.xml

Note that this is different from the similar feature in Spring. That gets you resources (and very nicely) but it does not allow 3rd part code to use it as a URL. This does (but note this does not support wildcards and other cool stuff that Spring does.

discontinued, don't really need it.