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Date Servlet

import java.io.IOException; import java.io.PrintWriter; import java.util.Date; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; public class DateServlet extends HttpServlet {   public void doGet(HttpServletRequest request, HttpServletResponse response)       throws ServletException, IOException {     HttpSession hs = request.getSession(true);     response.setContentType("text/html");     PrintWriter pw = response.getWriter();     pw.print("<B>");     Date date = (Date) hs.getAttribute("date");     if (date != null) {       pw.print("Last access: " + date + "<br>");     }     date = new Date();     hs.setAttribute("date", date);     pw.println("Current date: " + date);   } }