A simple cookie example in servlet

package com.mkyong;
 
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
public class ServletDemo extends HttpServlet{
 
	public void doGet(HttpServletRequest request, HttpServletResponse response)
	throws IOException{
 
		response.setContentType("text/html");
		PrintWriter pw = response.getWriter();
 
		Cookie cookie = new Cookie("url","mkyong dot com");
		cookie.setMaxAge(60*60); //1 hour
		response.addCookie(cookie);
 
		pw.println("Cookies created");
	}
}

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
 
	<display-name>servletdemo</display-name>
 
	<servlet>
		<servlet-name>ServletName</servlet-name>
		<servlet-class>com.mkyong.ServletDemo</servlet-class>
	</servlet>
 
	<servlet-mapping>
		<servlet-name>ServletName</servlet-name>
		<url-pattern>/Demo</url-pattern>
	</servlet-mapping>
 
</web-app>