In this exercise, you are asked to write the functionality of a generic
shopping basket; you will use this in several subsequent project exercises. Write a set
of JSP pages that displays a shopping basket of items and allows users to add, remove,
and change the quantity of items. To do this, use a cookie storage scheme that stores
the following information:
The UserId of the user who owns the shopping basket.
The number of products stored in the shopping basket.
A product id and a quantity for each product.
When manipulating cookies, remember to set the Expires property such that the
cookie can persist for a session or indefinitely. Experiment with cookies using JSP and
make sure you know how to retrieve, set values, and delete the cookie.