Hi!,
Shopping cart is a classic example of maintaining a converational state for
a client . U can achieve this using HttpSession.
HttpSession defines methods which store these types of data:
. Standard session properties, such as an identifier for the session, and
the context for the session.
. Application layer data, accessed using this interface and stored using a
dictionary-like interface
See Servlet API....
The following code snippet illustrates a HIT COUNTER implementation
//Get the session object - "request" represents the HTTP servlet request
HttpSession session = request.getSession(true);
//Get the session data value - an Integer object is read from
//the session, incremented, then written back to the session.
//sessiontest.counter identifies values in the session
Integer ival = (Integer) session.getValue("sessiontest.counter");
if (ival==null)
ival = new Integer(1);
else
ival = new Integer(ival.intValue() + 1);
session.putValue("sessiontest.counter", ival);
Hope it helps
Shiraz
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