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As a convenience feature, your web pages include an Ajax request every five minutes to a special servlet that monitors the age of the user’s session. The client-side
JavaScript that handles the Ajax callback displays a message on the screen as the session ages. The Ajax call does NOT pass any cookies, but it passes the
session ID in a request parameter called sessionID. In addition, assume that your webapp keeps a hasmap of session objects by the ID. Here is a partial
implementation of this servlet:
10. public class SessionAgeServlet extends HttpServlet {
11. public void service(HttpServletRequest request, HttpServletResponse) throws IOException {
12. String sessionID = request.getParameter(“sessionID”);
13. HttpSession session = getSession(sessionID);
14. long age = // your code here
15. response.getWriter().print(age);
16. }
… // more code here
47. }
Which code snippet on line 14, will determine the age of the session?


session.getLastAccessed().getTime() session.getCreationTime().getTime();

session.getLastAccessedTime().getTime() session.getCreationTime().getTime();

session.getLastAccessed() – session.getCreationTime();

session.getMaxInactiveInterval() session.getCreationTime();

session.getLastAccessedTime() session.getCreationTime();

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