title: Search or list Java classes in classpath (ncluding JARS) via command line
body: <p>I really like the javap command line program to decompile and inspect classes however most of the time I can't recollect the fully qualified package name of a class:</p>
  
  <pre><code>javap java.nio.file.Files
  </code></pre>
  
  <p>If I don't know the package name then I resort to using Google. Is there a built-in java program or slick Linux command that could search and list all the matching packages of a given class name?</p>