title: How to find Max Date in List<Object>?
body: <p>Consider a class <code>User</code></p>
  
  <pre><code>public class User{
    int userId;
    String name;
    Date date;
  }
  </code></pre>
  
  <p>Now I have a <code>List&lt;User&gt;</code> of size 20, how can I find the <strong>max date</strong> in the list without using manual iterator?</p>