This example dumps any existing session settings and values. The Servlet also
displays a form that can be used to enter new and modify existing session
values.
Clicking on Set Value sets/updates the existing session using the
key/value specified, clicking on Remove Value removes the entered key
from the existing session, clicking on Create Session creates a new
session, and clicking on Remove Session removes any existing session.
This example uses buffered response output in order to be able to set the
session cookie value. Session cookies must be sent along with the header
before any other output is sent to the client's browser.
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