I have runtime dependencies on some external jars that I would like to "rejar" into a single jar. These external dependencies are stored in a external_jars directory, and I'd like to be able to not have to list each one out (e.g., to not need to change my build scripts if my dependencies change). Any thoughts?

Google gave me a good answer on how to do this if you don't mind listing out each jar you want as a dependency:

http://markmail.org/message/zijbwm46maxzzoo5

Roughly, I want something along the lines of the following, which would combine all jars in lib into out.jar (with some sane overwrite rules).

jar -combine -out out.jar -in lib/*.jar