Viewing and Modifying Record
The viewing page displays all the fields in the selected record in a form that allows them to be modified, if desired.
This page is generated by a servlet called View.
The session handling is similar to Select (at this point if the session has timed out we simply create a new one).
The servlet extracts the row associated with the selected login ID.
For future reference, it saves the current value of the fields in the session object.
It generates the HTML for the displayed page.