title: Convert String "22/08/2013" to date format 2013/08/22
body: <p>This is my code in scala</p>
  
  <pre><code> var s:String ="22/08/2013"
   var  simpleDateFormat:SimpleDateFormat = new SimpleDateFormat("yyyy-mm-dd");
   var  date:Date = simpleDateFormat.parse(s);
   println(date)
  </code></pre>
  
  <p>the date is not change. the format of <strong>date same as 22/08/2013</strong> there is <strong>no change to 2013/08/22</strong></p>
  
  <p>How to change the format dd/mm/yyyy to yyyy/mm/dd in scala</p>