title: What does this do: @RunWith(SpringJUnit4ClassRunner.class)
body: <p>What does this annotation do?<br>
   When would I want to use it?<br>
    When would I not want to use it?</p>
  
  <pre><code>@RunWith(SpringJUnit4ClassRunner.class)
  </code></pre>
  
  <p>I can find more usages of this when I Google and do not find a 101 explanation as to what this annotation is supposed to communicate to me or when/why I would use it?</p>