title: how to import source code into Eclipse from a jar file?
body: <p>I got a <code>jar</code> file that is packaged with <code>source code</code> in it. I want to load it as a top-level project and start working on the source code. How can I do that in Eclipse?</p>
  
  <p>For example: if I have helloworld.jar, when I import this jar. I want to have the project name as helloworld, with all the packages and src inside it.</p>
  
  <p>I do not want that code on build path.but on my IDE to work with.</p>