Java tutorial
import java.io.*; import javax.servlet.*; import javax.servlet.http.*; import java.util.*; public class MyServlet extends HttpServlet { Hashtable accesses = new Hashtable(); public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { res.setContentType("text/html"); PrintWriter out = res.getWriter(); String remoteUser = req.getRemoteUser(); if (remoteUser == null) { out.println("Welcome!"); } else { out.println("Welcome, " + remoteUser + "!"); Date lastAccess = (Date) accesses.get(remoteUser); if (lastAccess == null) { out.println("This is your first visit!"); } else { out.println("Your last visit was " + accesses.get(remoteUser)); } if (remoteUser.equals("YourFirendName")) { out.println("Shall we play a game?"); } accesses.put(remoteUser, new Date()); } } }