/** * The HelloWorldApp class implements an application that * simply prints "Hello World!" to standard output. */ /* class HelloWorldApp { public static void main(String[] args) { System.out.println("Hello World!"); // Display the string. } } */ import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpSession; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class HelloWorldApp extends HttpServlet { // Redirect to handle() public void doGet(HttpServletRequest httpRequest, HttpServletResponse httpResponse) { handle(httpRequest, httpResponse); } // Redirect to handle() public void doPost(HttpServletRequest httpRequest, HttpServletResponse httpResponse) { handle(httpRequest, httpResponse); } private void handle(HttpServletRequest httpRequest, HttpServletResponse httpResponse) {