Protecting the jar files from being web access

Question

I have a jnlp file which is put under tomcat webapps folder, say (\webapps\TEST\launch.jnlp), with the jar and lib files put in the subfolder (\webapps\TEST\folder1\*.jar AND \webapps\TEST\folder1\lib\*.jar).
My question is how can i prevent user from direct access to the jar files via typing http://www.someip.com/TEST/folder1/main.jar ? I tried the following methods but it seemed not working:
1. Change the folder permisson in \webapps\TEST\*.*, but when user type the above hyperlink they can still get the jar file
2. put the jar and related files under \WEB-INF\, but now this time running the launch.jnlp, it returns an error saying that it can't access/find the WEB-INF.
Is there any method? Or should I say, when you published jnlp to web, the related jar files are forced to be accessed by everyone.

Answer 1

Sounds easy to me: encrypt your xml, then instead of just storing your key as plain bytes do some reversable operations on it (xor masks, reversions, whatever you like), just do them in many different points (and classes) of your code, have some parts done by methods that actually check application is running under JWS with proper codebase, scramble it all, and suddently the whole stealing operation won't be worth the effort. Obviously you should have many private (and package protected) methods, seal packages and so on. Maybe, somehow, you can even use reflection to identify calling classes (not sure, never looked for anything similar).
What else? write down some c++ code into your own dll/JNI library and make it do something too, so they'll even need to decompile the dll. If you know first execution is always online you can send another xor key and store it with persistence service or write it down to windows registry. You can keep making it harder as much as you like, even just with silly code like
Math.ceil((new GregorianCalendar.getField(Calendar.YEAR)%2000)/1000)*((int)('c'-'a'))just to retrieve the number 2. If you distribute such code through many lines and methods, once you scramble it, most people will give up.
Bye.