title: Running ProGuard on OS X: Where is Apple's equivalent to the rt.jar?
body: <p>I'm running <a href="http://proguard.sourceforge.net/" rel="nofollow noreferrer">ProGuard</a> to shrink my jar file. One of the parameters it needs is the system's runtime jar. This is at <code>$JAVA_HOME/lib/rt.jar</code> on Sun distributions, but not on Apple's Mac&nbsp;OS&nbsp;X (v10.6 (Snow&nbsp;Leopard) in my case).</p>
  
  <p>Is there an rt.jar for OS&nbsp;X?</p>