title: Call a method of subclass in Java
body: <p>If I have a base class
      <code>Base thing = null;</code>
  of which there is a subclass
      <code>class Subclass extends Base</code>
  and I instigate it as 
      <code>thing = new Subclass</code>
  how would I call a method that is specifically in Subclass, but not in Base?
  ex.
  <code>Base</code> has only <code>method()</code>
  <code>Subclass</code> has <code>method()</code> and <code>specialMethod()</code>
  the method <code>specialMethod()</code> is the one I want to call.</p>