I have a java application I\'ve written in eclipse. It works fine there.
It works fine run from a command line in the directory where I export it to. In that direc
You actually should use Ant or Maven for your task, I see no other option. Ant is already packed with eclipse, you only need to install a JDK, not only a JRE.
Ant is very easy to learn and you can find billions of examples in the internet. With ant you can do exactly what you want.
Maven is the more up-to-date way to build and package jars and do much more other stuff. Maven also is a good choice for you.