title: Controller in Struts
body: <p>What is Controller in MVC ?</p>
  
  <p>Is it <code>struts.xml</code> or <code>Servlet</code> (Action Class)?</p>
  
  <p>Can we have more than one <code>Controller</code> in our application? </p>
  
  <p>Is it good practice to have more than one controller?</p>