Well, the title says it all. Imagine that I have HelloWorld.java , I want to create an executable jar from it. I know that if I use IDE such as eclipse I can create it there but how can you create it without that?

Nevermind, solved :)

keep in mind that on systems you want to use it as a 'click' executable, you'll need to have both
1. the jre installed (in order for it to run)
2. the environment settings of the os set, so the os knows how to handle the .jar file and it's contents

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