<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%> <% int a = 1; if( request.getParameter("a") != null ) a = Integer.parseInt( request.getParameter("a") ); int b = 2; if( request.getParameter("b") != null ) b = Integer.parseInt( request.getParameter("b") ); %> Add The sum of <%= a %> and <%= b %> is <%= a+b %>.