title: Google app engine java filtering date query with day
body: <p>I am looking for some thing like this.</p>
  
  <pre><code>public class User 
  {
     private Date createdOn;
  }
  </code></pre>
  
  <p>Now i need a query to fetch users created on day 10th of any month or year. 
  Like i need users created on 10th Jan 2012, 10th Feb 2012, 10th June 2010.....
  How can i get part of a date in gae query?</p>
  
  <p>Thanks,</p>
  
  <p>Ramesh.V</p>