title: scala -- How to customize date format using SimpleDateFormat using json4s
body: <p>I need a date format like </p>
  
  <blockquote>
    <p>Tue May 31 17:46:55 +0800 2011</p>
  </blockquote>
  
  <p>And the current formats I am using is</p>
  
  <pre><code>implicit val formats = Serialization.formats(NoTypeHints)
  </code></pre>
  
  <p>It will produce :</p>
  
  <blockquote>
    <p>2011-05-31 17:46:55.0</p>
  </blockquote>
  
  <p>How can I make the formats that produce string like  <code>"Tue May 31 17:46:55 +0800 2011"</code> ?</p>