title: Exclude a class from the build in Android Studio
body: <p>I've been learning Android over the past few months and have been using <a href="https://en.wikipedia.org/wiki/Eclipse_%28software%29#Releases" rel="nofollow noreferrer">Eclipse v4.2</a> (Juno) as my IDE.</p>
  <p>I am trying to migrate to Android Studio.  How can I exclude some of the classes from build path I have yet to complete?</p>
  <p>In Eclipse, it was a straightforward right click.  I can't find any reference to it in Android Studio.</p>