You will model ShoppingCart as java Class.

ShoppingCart class will store Items in the cart. Item will be another java class.

Item is identified by Id attribute. If the Item with the same Id is added multiple times in the cart, change the quantity and DO NOT add multiple Item objects with same Id.

The program should prompt various actions on ShoppingCart addItemToCart Two overloads

updateItemQuantity

removeItemFromCart

calculateItemBasedDiscount

getTotalCost

Based on the selected action ask for further input. For example, if user selects to addItemToCart, prompt user to enter:

itemId

itemName

itemPrice

itemQuantity

Implement all methods in ShoppingCart.java

Write test in ShoppingCartTester.java.

Use scanner to implement userInputSimulator() method.

See sample output for sample run. Before you start working on user input, implement the tester methods as provided in the starter code. Once you have everything working enable the user input and comment out the tester code. Gracefully exit the program

Sample Output WELCOME TO SHOPPING CART APPLICATION. PLEASE ENTER YOUR NAME:

Joe Peters Welcome Joe Peters. Your Shopping Cart is created.

-----------------------------------------------------------------------------

Select one of the following options:

Add Item in ShoppingCart

Update Quantity for Item in ShoppingCart

Remove Item from Shopping Cart

Calculate Item Based Discount

Get total cost

Exit

1

You have selected to Add Item in Shopping Cart

Please Enter Item Id: 123

Please Enter Item Price: 20.50

Please Enter Item Quantity: 20

Item "Id: 123, Cost: $20.50" is added in ShoppingCart with Quantity 20

Select one of the following options:

Add Item in ShoppingCart

Update Quantity for Item in ShoppingCart

Remove Item from Shopping Cart

Calculate Item Based Discount

Get total cost

Exit

2

You have selected to update Quantity for Item in ShoppingCart

Please Enter Item Id for which you want to change Quantity: 123

Please Enter new Quantity: 25 Quantity for Item "Id: 123, Cost: $20.50" is changed to 25

Select one of the following options:

Add Item in ShoppingCart

Update Quantity for Item in ShoppingCart

Remove Item from Shopping Cart

Calculate Item Based Discount

Get total cost

Exit 6

Are you sure you want to Exit(y/n)?

y

Good Bye Have a Nice Day!

//end sample output

Make sure you create helper methods instead of putting entire testing code in Main method for getting options and calling appropriate function once you receive the options.