{"id":17668,"date":"2025-11-06T06:42:11","date_gmt":"2025-11-06T06:42:11","guid":{"rendered":"https:\/\/www.kaashivinfotech.com\/blog\/?p=17668"},"modified":"2025-11-06T06:42:11","modified_gmt":"2025-11-06T06:42:11","slug":"life-cycle-of-a-servlet-in-java","status":"publish","type":"post","link":"https:\/\/www.kaashivinfotech.com\/blog\/life-cycle-of-a-servlet-in-java\/","title":{"rendered":"Java \u2013 The Fascinating Life Cycle of a Servlet You Should Know!"},"content":{"rendered":"

Have you ever wondered what actually happens<\/em> behind the scenes when you type a URL in your browser and get a Java-based web page loaded instantly?\u00a0 Well, that little magic trick is performed by something known as a Servlet \u2014 a Java class that lives and breathes to handle your web requests.<\/p>\n

Let\u2019s get straight to it \u2014 this article is all about understanding the life cycle of a servlet in Java<\/a> \u2014 not just from a textbook point of view but from a developer\u2019s real-world perspective. I\u2019ll also share some of my personal experiences dealing with servlets<\/p>\n

What is a Servlet?<\/h2>\n

Before we talk about the life cycle of a servlet in Java, let\u2019s take a step back.<\/p>\n

\"\"<\/p>\n

A Servlet is basically a Java<\/a> program that runs on a web server. It\u2019s used to handle requests from clients (like your web browser) and send responses (like HTML pages or JSON data). Think of it as a middleman between your web app\u2019s front-end and back-end logic.<\/p>\n

When I first learned servlets, I imagined them as waiters in a restaurant, \u2014 they take your order (request), give it to the chef (server logic), and bring back your food (response). That\u2019s literally how servlets work!<\/p>\n

Now let\u2019s see what happens behind the curtain<\/em> \u2014 the life cycle of a servlet in Java.<\/p>\n

Understanding the Life Cycle of a Servlet in Java<\/h2>\n

\"\"<\/p>\n

Here\u2019s the exciting part \u2014 how a servlet is born<\/em>, lives<\/em>, and eventually dies<\/em> in the server\u2019s world.<\/p>\n

The life cycle of a servlet in Java is controlled by the Servlet container (like Apache Tomcat, Jetty, or GlassFish). This container takes care of loading, initializing, running, and destroying servlets automatically.<\/p>\n

Let\u2019s walk through the major phases one by one.<\/p>\n

1. Loading and Instantiation<\/h3>\n

When a client (say your browser) sends a request for the first time, the Servlet container checks if the servlet is already loaded in memory.<\/p>\n