(use java language)

Create an abstract class Item which implements Price interface with a method sell(Obejct o) which calls the toString() of the respective subclass object after downcasting.

Extend a class Milk from Item class which contains one protected data member Brand (String), and one private data member expiryDate (Date)..

Provide constructor for Milk class with one parameter String to initialize value of Brand and another parameter to initialize date. Also call the interfaces setPrice method and pass it the value asked from user

use java language