title: JUnit - Run specific tests using JUnitCore
body: <p>I have a couple of classes which contain Tests.
  I have a main method that uses JUnitCore in order to run all tests.</p>
  
  <p>What can I do in order to run specific tests in each class?</p>
  
  <p>Currently I use something like this to run all my tests :</p>
  
  <pre><code>      Result result = JUnitCore.runClasses(TestJunit.class, TestJunit2.class);
  </code></pre>
  
  <p>Maybe there is a possibility to categorize the relevant tests and then run them using JUnitCore ?? Thanks !</p>