File -> Export -> Java -> Jar file.
Okay that was easy, but surely there’s way to do it with Maven? … after installing maven and spending less than a minute reading the XML, I realized I really am not that interested in learning this right now. Maven/Ant/alternatives are important when you have a larger project and my 1 java file Hello World program.java simply isn’t.
More important than creating a jar file.. [Command]- is similar to [Alt]-[Enter] in Visual Studio. Life saver!