title: Skip tests at runtime when using SpringJUnit4ClassRunner
body: <p>In my project, I have acceptance tests which take a long time to run.  When I add new features to the code and write new tests, I want to skip some existing test cases for the sake of time.  I am using Spring 3 and junit 4 using SpringJUnit4ClassRunner.  My idea is to create an annotation (@Skip or something) for the test class.  I am guessing I would have to modify the runner to look for this annotation and determine from system properties if a test class should be included while testing.  My question is, is this easily done?  Or am I missing an existing functionality somewhere which will help me?</p>
  
  <p>Thanks.
  Eric</p>