HttpSession Methods 

(Continued)

isNew 

Determines if session is new to client (not to page)

getCreationTime

Returns time at which session was first created 

getLastAccessedTime 

Returns time session was last sent from client 

getMaxInactiveInterval,

setMaxInactiveInterval 

Gets or sets the amount of time session should go without 

access before being invalidated 

invalidate 

Invalidates the session and unbinds all 

objects associated with it

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Servlets

www.corewebprogramming.com

A Servlet Showing Per Client 

Access Counts

public void doGet(HttpServletRequest request,

HttpServletResponse response)

throws ServletException, IOException {

response.setContentType("text/html");

PrintWriter out = response.getWriter();

String title = "Session Tracking Example";

HttpSession session = request.getSession(true);

String heading;

Integer accessCount =

(Integer)session.getAttribute("accessCount");

if (accessCount == null) {

accessCount = new Integer(0);

heading = "Welcome, Newcomer";

} else {

heading = "Welcome Back";

accessCount = new Integer(accessCount.intValue() + 1);

}

session.setAttribute("accessCount", accessCount);

92

Servlets

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