Servlet in Java: Server-Side Programming and Role of servlet-api.jar Explained
What is a Servlet? A Servlet is a server-side Java program that runs inside a web server and is used to handle client requests and generate responses. Servlets can perform different types of logic, such as: Presentation Logic – Generating output (HTML, JSON, etc.) Business Logic – Processing application rules and conditions Persistence Logic – Interacting with databases Response Handling – Sending the response back to the client Servlets act as a bridge between the client (browser) and the server-side application logic. 🔹 Secure Web Application Development Using Servlets To develop a secure Java web application, a programmer must use the Servlet API. 🔸 servlet-api.jar servlet-api.jar is a library that provides all Servlet and HTTP-related classes and interfaces. This JAR file is present inside the Apache Tomcat server. 📂 Location in Tomcat Apache Tomcat → lib → servlet-api.jar 🔹 Role of servlet-api.jar Acts as a runtime environment for servlet applications. ...