Implementation of HttpServlet class

public abstract class HttpServlet extends GenericServlet

{

   public void service(ServletRequest request, ServletResponse response) throws ServletException, IOException;

   {

                        HttpServletRequest req=(HttpServletRequest)request;

                   HttpServletResponse res=(HttpServletResponse)response;

                service(req,res);

   }

protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException;

 {

            // Request type is checked and doGet() and doPost() method are invoked.
       if(get())

       if(post())

       if((put())

       if((delete())

       if((head())

       if((trace())

       if((connect())

       if((options())

  }

}

1.2- public service(-,-) of HttpServlet is executed.

1.3- protected service(-,-) is invoked by public service().

1.4- protected service(-,-) of HttpServlet is executed.

1.5- request type is checked and doGet(-,-) is invoked by protected service().