I'm working on a small application which can be found here. I have one problem : the generated Jar file is not executing. I used an
Look And Feel
I am not familiar with Ant build environment, but according to the stackTrace, this is because you pack jar without the used libs. After a short search I found this docs here.
Apply to your project in order to compile jar with lib jar(s).
Or this answer also shows how to compile jar with dep. libs.