 <p>In your comments you stated that the <code>.jar</code> files are unzipping and not running on your friends' computers.</p> <p>This is usually caused by Java not being installed on their computers. They should get the <a href="http://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html" rel="nofollow">Java SE Runtime Environment from Oracle</a> and install it. Afterwards, the jar files can be run with a double-click.</p> <p>If your friends already have Java installed, they might have to fix their file associations (so <code>.jar</code> files no longer open with their ZIP tool).</p>