code: public static void main(String[] args) throws IOException {
  		if (args.length < 2) {
  			System.err.println("Usage: JarHelper jarname.jar directory");
  			return;
  		}
  
  		JarHelper jarHelper = new JarHelper();
  		jarHelper.mVerbose = true;
  
  		File destJar = new File(args[0]);
  		File dirOrFile2Jar = new File(args[1]);
  
  		jarHelper.jarDir(dirOrFile2Jar, destJar);
  	}
docs: for debugging