JSP Session Attribute Example

Hey guys in this article, you will learn everything you need to know about Sessions in JSP with full code example.

Read More:


  • JSP session is created once for user’s browser session.
  • It is unique for each user
  • It is commonly  used when you need to keep track of user’s actions

Add data to the session object

session.setAttribute(name, value);


Set<String> todos = new HashSet<String>();
session.setAttribute("todos", todos);

Retrieve data from session object

Object session.getAttribute(name);


Set<String> todos = (Set<String>) session.getAttribute("todos");

Complete Example

Follow the below steps to understand the complete example

Create a Project

You can check the following post to create a new Dynamic Web Project

Create a JSP file

Create SessionDemo.jsp file under WebContent and add the following content

<%@page import="java.util.HashSet"%>
<%@page import="java.util.Set"%>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
<!DOCTYPE html>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
	<form action="SessionDemo.jsp">
		Add New Todo: <input type = "text" name="todo" />
		<input type = "submit" value="Submit" />
		Set<String> todos = (Set<String>) session.getAttribute("todos");
		if(todos == null) {
			todos = new HashSet<String>();
			session.setAttribute("todos", todos);
		String todo = request.getParameter("todo");
		if(todo != null) {
	<b>My upcoming todos:</b>
			for(String temp : todos) {

Run the file

Right click on the File, choose Run As, choose Run on Server. It will open in a default web browser, you will see the following content

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Bushan Sirgur

Hey guys, I am Bushan Sirgur from Banglore, India. Currently, I am working as an Associate project in an IT company.

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