title: how to get class from class-name
body: <p>I have a String <em>Person</em>, which is the name of a class <code>Person</code>.
  Can I get the class <code>Person</code> from that string?. I need the class to call static methods of if.</p>
  
  <p>In other words: is there an inverse to <code>Class.getName()</code>?</p>
  
  <p>If that does not work at all, let me know. It is an answer too.</p>