While most do, for example Symantec's doesn't. Make sure to change the -classpath option to correspond to your environment. This file should reside in the globally accessible directory, making it possible to call JZipper anywhere in the system. In Windows systems this should be one of the directories in the PATH environment variable. The jzipper.bat file, included in the distribution, is an example how to setup such a file in the Windows system.
Similar file can be easily setup in other systems as well.
To take advantage of jzipper.bat, open it in the text editor and change it to correspond to your environment. There is no problem in doing so, it doesn't create any conflicts. This is because the prerelease classes are all moved into a package vegatech. Now you can invoke JZipper release version by refering to class JZipper and invoke prerelease by referring to vegatech. However, for the prerelease you use java vegatech.