title: ServletContext.getRequestDispatcher() vs ServletRequest.getRequestDispatcher()
body: <p><strong>why</strong></p>
  
  <blockquote>
    <p>getRequestDispatcher(String path) of
    the ServletRequest interface cannot
    extend outside the current servlet
    context  </p>
  </blockquote>
  
  <p><strong>where as</strong></p>
  
  <blockquote>
    <p>getRequestDispatcher(String path) of
    the ServletContext can use the
    getContext(String uripath) method to
    obtain RequestDispatcher for resources
    in foreign contexts.</p>
  </blockquote>
  
  <p><strong>and how??</strong></p>
  
  <p>Please help</p>