Build the StockItem Class:

Design and implement a class named StockItem that can be used to keep track of

items in stock at a store.

Each stock item object must include the following:

$$ A variable named description which will hold a description of a stock item.

$$ A variable named id which holds a unique integer.

$$ A variable named price which holds the price rounded to the nearest penny.

$$ A variable named quantity which indicates how many are in stock.

Each stock item must have a unique ID number generated for each newly

instantiated stock item object. In order to do this, you$$ll need a static variable.

StockItem class must include a:

$$ Default constructor.

$$ Overloaded constructor that takes description, a price, and a current quantity.

$$ Overridden toString$/$ToString method that prints all details of the stock item.

Methods of the StockItem object must include the following:

$$ Getter Methods:

$$ Retrieve the description of the item

$$ Retrieve the id number of the item

$$ Retrieve the price of the item

$$ Retrieve the quantity of the item that is currently in stock

$$ Setter Methods:

$$ Set a new price for the item

$$ Should take in a new price and set it$.$

$$ If the new price is below $0,$ print an error.

$$ Lower the quantity in stock

$$ Should take in a quantity and lower the objects quantity.

$$ If the quantity would drop below $0,$ print an error.

$$ Raise the quantity in stock

$$ Should take in a quantity and increase the objects quantity.

Building the Driver:

Design a Driver program which can be used by a tiny convenience store that

only sells Milk and Bread.

Create an object called milk. Set its description to $1$ Gallon of Milk$,$ its price

to $$3\mathrm{.}60$ and its quantity to $15.$

Create an object called bread. Set its description to $1$ Loaf of Bread$,$ its

price to $$1\mathrm{.}98$ and its quantity to $30.$

Present the user with a menu as follows:

$1.$ Sold One Milk

$2.$ Sold One Bread

$3.$ Change price of Milk

$4.$ Change price of Bread

$5.$ Add Milk to Inventory

$6.$ Add Bread to Inventory

$7.$ See Inventory

$8.$ Quit

Continue reading in the users choice, until they choose option $8.$

$$ If the user chooses $1$ or $2,$ call the lowerQuantity method in the milk or bread object as

appropriate.

$$ If the user chooses $3$ or $4,$ prompt the user for a new price and set the price of Milk or

Bread using the setPrice method in the appropriate object.

$$ If the user chooses $5$ or $6,$ prompt the user for the new quantity of Milk or bread, and

call raiseQuantity in the appropriate object

$$ If the user chooses $7$ print out the milk and bread object. You should just be able to

print$($milk$)$ and print$($bread$)$

Sample Output:

$1.$ Sold One Milk

$2.$ Sold One Bread

$3.$ Change price of Milk

$4.$ Change price of Bread

$5.$ Add Milk to Inventory

$6.$ Add Bread to Inventory

$7.$ See Inventory

$8.$ Quit

$7$

Milk: Item number: $0$ is $1$ Gallon of Milk has price $3\mathrm{.}6$ we currently have $15$ in stock

Bread: Item number: $1$ is $1$ Loaf of bread has price $1\mathrm{.}98$ we currently have $30$ in stock

$1.$ Sold One Milk

$2.$ Sold One Bread

$3.$ Change price of Milk

$4.$ Change price of Bread

$5.$ Add Milk to Inventory

$6.$ Add Bread to Inventory

$7.$ See Inventory

$8.$ Quit

$1$

$1.$ Sold One Milk

$2.$ Sold One Bread

$3.$ Change price of Milk

$4.$ Change price of Bread

$5.$ Add Milk to Inventory

$6.$ Add Bread to Inventory

$7.$ See Inventory

$8.$ Quit

$2$

$1.$ Sold One Milk

$2.$ Sold One Bread

$3.$ Change price of Milk

$4.$ Change price of Bread

$5.$ Add Milk to Inventory

$6.$ Add Bread to Inventory

$7.$ See Inventory

$8.$ Quit

$1$

$1.$ Sold One Milk

$2.$ Sold One Bread

$3.$ Change price of Milk

$4.$ Change price of Bread

$5.$ Add Milk to Inventory

$6.$ Add Bread to Inventory

$7.$ See Inventory

$8.$ Quit

$3$

What is the new price for Milk

$4\mathrm{.}00$

$1.$ Sold One Milk

$2.$ Sold One Bread

$3.$ Change price of Milk

$4.$ Change price of Bread

$5.$ Add Milk to Inventory

$6.$ Add Bread to Inventory

$7.$ See Inventory

$8.$ Quit

$7$

Milk: Item number: $0$ is $1$ Gallon of Milk has price $4\mathrm{.}0$ we currently have $13$ in stock

Bread: Item number: $1$ is $1$ Loaf of bread has price $1\mathrm{.}98$ we currently have $29$ in stock

$1.$ Sold One Milk

$2.$ Sold One Bread

$3.$ Change price of Milk

$4.$ Change price of Bread

$5.$ Add Milk to Inventory

$6.$ Add Bread to Inventory

$7.$ See Inventory

$8.$ Quit

$6$

How many bread did we get?

$5$

$1.$ Sold One Milk

$2.$ Sold One Bread

$3.$ Change price of Milk

$4.$ Change price of Bread

$5.$ Add Milk to Inventory

$6.$ Add Bread to Inventory

$7.$ See Inventory

$8.$ Quit

$7$

Milk: Item number: $0$ is $1$ Gallon of Milk has price $4\mathrm{.}0$ we currently have $13$ in stock

Bread: Item number: $1$ is $1$ Loaf of bread has price $1\mathrm{.}98$ we currently have $34$ in stock

$1.$ Sold One Milk

$2.$ Sold One Bread

$3.$ Change price of Milk

$4.$ Change price of Bread

$5.$ Add Milk to Inventory

$6.$ Add Bread to Inventory

$7.$ See Inventory

$8.$ Quit