Servlets and JSP

Web Development with Java Servlets Before servlets, Java had applets - small programs that ran inside web browsers. Applets failed. Servlets succeeded. A servlet is a Java class ...

Your First Servlet Let us build a working servlet from scratch. By the end of this post you will have a deployable web application that responds to HTTP requests with dynamic ...

The Servlet Lifecycle Servlets are not created fresh for every request. The container manages a pool of servlet instances and controls their entire lifecycle from creation to ...

Handling GET and POST Requests HTTP defines several methods, but GET and POST cover the vast majority of web interactions. GET retrieves data. POST submits data. Your servlet must ...

Request and Response Objects The HttpServletRequest and HttpServletResponse objects are your interface to the HTTP protocol. Understanding their methods is essential for building ...

Sessions and Cookies HTTP is stateless - each request is independent. Sessions and cookies let you remember users across requests. A cookie is a small value stored on the client. ...

JSP Basics and Scriptlets Writing HTML inside Java strings is painful. JSP (JavaServer Pages) solves this by letting you write HTML with embedded Java expressions. The container ...

JSP Directives and JSTL Directives configure the JSP page at compile time. JSTL (JSP Standard Tag Library) provides reusable tags for common tasks like loops, conditionals, and ...

Filters and Listeners Filters intercept requests before they reach a servlet and responses before they go back to the client. Listeners react to application lifecycle events. Both ...

Building a Small MVC Web App Let us tie everything together by building a small MVC web application - a book catalog with list, view, and search functionality. This demonstrates ...