Java Development Tools

I am trying to find a straightforward method to use the best compression level possible for the jar files created from JDeveloper (10.1.3). I do have the "Compressed" checkbox checked.

Currently it is creating Jar files that are not compressed at the best level possible, (the files it creates are about 8 megs). If I open up the jar file in an external compression tool, and then re-compress it as a Jar, I am able to get a file almost half the size... (4-5 megs). And yes, this jar file still works flawlessly in all of our environments. (it is used as a webstart file)

Is there any way to adjust the compression level that JDeveloper uses to compress the jar?



Thanks,
Mike Hess