title: Include one project's jar libraries in another project depending on the first
body: <p>I am working on two projects in Eclipse.</p>
  
  <p>Project A depends on some <code>jar</code> files that come with the project, and those jar files have been added to the “Libraries” tab in Project A's “Java Build Path” property in Eclipse.</p>
  
  <p>Project B depends on Project A, as well as directly using some classes in some of those <code>jar</code> files in Project A's build path.</p>
  
  <p>I had assumed that adding Project A to Project B's Java Build Class would also add the jars already in Project A's build path, but that appears not to be the case.</p>
  
  <p>Do I have to manually add those jars to Project B's build class, or am I overlooking a setting? If so, why is that a useful standard behaviour?</p>