title: Generate .jar from scala
body: <p>I'm developing an application on Eclipse with Scala and a would like to create a .jar. I have found tuto to do that, but it use the package scala.tools.nsc and I don't know where I can found this thing.<br>
  I have tried too, to generate the .class and then with the command <code>jar cmf ....</code> to generate the <code>.jar</code> but when I launch the <code>.jar</code> an error occur. (NoClassFound)<br>
  With sbt I have tried too, but when I compile my project that work with eclipse a lot of error appear. </p>
  
  <p>Somebody can me explain how I can simply create a .jar with Eclipse or another tools.</p>