Java

public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws IOException, ServletException 
    {
        String url = "";
        //if the number is minus n does not exist
        if (Code < 0 ) 
        {
            url = "/Error.jsp";
        }
        //if the number is not included
        else 
        {
            url = "/Error.jsp";
        }
 
        // forward to the view
        RequestDispatcher dispatcher =
                getServletContext().getRequestDispatcher(url);
        dispatcher.forward(request, response);
    }

public int getCode()
    {
        if (stateName.equals("Aden") || stateName.equals("aden") || stateName.equals("ADEN"))
        {
            Code = 01;
            return (Code);
        }
        else if (stateName.equals("Mukalla") || stateName.equals("mukalla") || stateName.equals("MUKALLA"))
        {
            Code = 02;
            return (Code);
        }
        else
        {
          return doGet(request, response);
        }
    }