title: How do I add multiple source folders to a JAR?
body: <p>I have a large JAR file from a library, the source code of which is scattered across multiple different folders, so I have to merge these folders manually and specify the single merged folder as the source.</p>
  
  <p>Is there any way in Eclipse to link more than one source folder to a specific JAR? I am guessing not and various tricks I have tried do not seem to work, but if anyone knows of one that works, please post it.</p>