Explain Java Servlets

Java Servlets are server-side programs that handle client requests in a web application. They function as a middle layer between client requests and databases or other business logic, effectively processing user input and generating dynamic content for web pages. Java Servlets are part of the Java EE (Enterprise Edition) platform and offer powerful features such as session management, state management, and support for JavaServer Pages (JSP).

A typical workflow using Servlets involves a client (usually a web browser) sending an HTTP request to a server, which in turn invokes the appropriate Servlet to process this request. The Servlet processes the request, possibly interacts with a database, and returns an HTTP response back to the client. This model allows developers to build robust web applications using Java.

Example of a Simple Servlet

// Importing required packages import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; @WebServlet("/hello") public class HelloServlet extends HttpServlet { protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html"); response.getWriter().println("

Hello, World!

"); } }

Java Servlets Server-side programming Dynamic web content Java EE Web applications HTTP request HTTP response

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