title: How to create a multi level folder structure for unit testing
body: <p>I need a folder structure like this:</p>
  
  <pre><code>home
      --level1
          --level2a
          --level2b
  </code></pre>
  
  <p>I can create the first level with junit's temporary directory, but how do you create the levels below it?</p>
  
  <pre><code> @Rule
      public TemporaryFolder home= new TemporaryFolder();
  
      @Before
      public void setUp() 
      {
          File level1= home.newFolder("level1");
      }
  </code></pre>