title: How to find the missing jar?
body: <p>If I have a project with hundrends of <code>jar</code> files, and e.g. I have an <code>import</code> of a package that can not be found, how would I find which <code>jar</code> should I include?<br>
  I.e. how do I know that package <code>a.b.c</code> is defined in <code>X.jar</code> under <code>/filesystem/jars</code> where under this path there are hundrends of <code>jars</code>?<br>
  Is there e.g. a tool to search inside jars? grep-like for jars?</p>