Part 2. (5 points)

This program extends the earlier "Online shopping cart" program. (Consider first saving your earlier program).

1. Extend the ItemToPurchase class per the following specifications

Private fields

• string itemDescription - Initialized in default constructor to "none"
• Parameterized constructor to assign item name, item description, item price, and itemquantity (default values of 0).

Public instance member methods

• setDescription() mutator & getDescription() accessor (2 pts)
• printItemCost() - Outputs the item name followed by the quantity, price, and subtotal
• printItemDescription() - Outputs the item name and description

Ex. of printItemCost() output:

Bottled Water 10 @ $1 = $10

Ex. of printItemDescription() output:

Bottled Water: Deer Park, 12 oz.

2. Create two new files

• ShoppingCart.java - Class definition
• ShoppingCartManager.java - Contains main() method

Build the ShoppingCart class with the following specifications. Note: Some can be method stubs (empty methods) initially, to be completed in later steps.

Private fields

• String customerName - Initialized in default constructor to "none"
• String currentDate - Initialized in default constructor to"January 1, 2020"
• ArrayList cartItems where each item is of type ItemToPurchase
• Coupon code - Enum class with constants 10OFF, 20OFF, 30OFF

Public member methods

• Default constructor
• Parameterized constructor which takes the customer name and date as parameters
  • getCustomerName() accessor
  • getDate() accessor

addItem()

Adds an item to cartItems array. Has parameter ItemToPurchase. Does not return

anything

removeItem()

• Removes item from cartItems array. Has a string (an item's name) parameter. Does not return anything
• If item name cannot be found, output this message: Item not found in cart. Nothing removed.

modifyItem()

• Modifies an item's description, price, and/or quantity. Has parameter ItemToPurchase. Does not return anything.
• If item can be found (by name) in cart, check if parameter has default values for description, price, and quantity. If not, modify item in cart.
• If item cannot be found (by name) in cart, output this message: Item not found in cart. Nothing modified.

getNumItemsInCart()

• Returns quantity of all items in cart. Has no parameters.

getCostOfCart()

• Determines and returns the total cost of items in cart. Has no parameters.

applyCouponCode()

• A coupon code can be applied based on the following conditions:
  • 10OFF - $10 off the total price if current total exceeds $50
  • 20OFF - $20 off the total price if current total exceeds $100
  • 30OFF - $20 off the total price if current total exceeds $150

printTotal()

• outputs total of objects in cart. Apply any applicable coupon codes.
• If invalid coupon code is applied, output the message: INVALID CODE
• If cart is empty, output this message: SHOPPING CART IS EMPTY

Example of PrintTotal()output:

John Doe's Shopping Cart - February 1, 2020

Number of Items: 8

Nike Romaleos 2 @$189 = $378

Chocolate Chips 5 @ $3 = $15

Powerbeats 2 Headphones 1 @ $128 = $128

Discount (30OFF): -$30

Total: $491

printDescription()

• Outputs each items description.

Example of printDescription()output:

John Doe's Shopping Cart - February 1, 2020

Item Descriptions

Nike Romaleos: Volt color, Weightlifting shoes Chocolate Chips: Semi-sweet

Powerbeats 2 Headphones: Bluetooth headphones

3. In the file ShoppingCartManager.java, have the main method prompt the user for a customer's name and today's date.

• Output the name and date.
• Create an object of type ShoppingCart.

Output Example:

Enter Customer's Name: John Doe

Enter Today's Date:

February 1, 2020

Customer Name: John Doe

Today's Date: February 1, 2020

4. Implement the printMenu() method in ShoppingCartManager.java. printMenu() has a ShoppingCart parameter, and outputs a menu of options to manipulate the shopping cart. Each option is represented by a single character. Build and output the menu within the method
   • If there is an invalid character is entered, continue to prompt for a valid choice. Hint: Implement Quit before implementing other options.
   • Call printMenu() in the main() method.
   • Continue to execute the menu until the user enters q to Quit.

Output Example:

MENU

a - Add item to cart

d - Remove item from cart

c - Change item quantity

i - Output items' descriptions

o - Output shopping cart

p - Apply coupon code

q - Quit

Choose an option:

5. Implement Output shopping cart menu option

Output Example:

OUTPUT SHOPPING CART

John Doe's Shopping Cart - February 1, 2020

Number of Items: 8

Nike Romaleos 2 @ $189 = $378

Chocolate Chips 5 @ $3 = $15

Powerbeats 2 Headphones 1 @ $128 = $128

Discount (30OFF): -$30

Total: $491

6. Implement Output item's description menu option.

Output Example:

OUTPUT ITEMS' DESCRIPTIONS

John Doe's Shopping Cart - February 1, 2020

Item Descriptions

Nike Romaleos: Volt color, Weightlifting shoes

Chocolate Chips: Semi-sweet

Powerbeats 2 Headphones: Bluetooth headphones

7. Implement Add item to cart menu option.

Output Example:

ADD ITEM TO CART

Enter the item name:

Nike Romaleos

Enter the item description: Volt color, Weightlifting shoes

Enter the item price:

189

Enter the item quantity: 2

8. Implement Remove item menu option

Output Example:

REMOVE ITEM FROM CART

Enter name of item to remove: Chocolate Chips

9. Implement Change item quantity menu option.

Output Example:

CHANGE ITEM QUANTITY

Enter the item name: Nike Romaleos

Enter the new quantity: 3

10. Implement the Apply coupon code menu option. When an invalid coupon code or a coupon code which doesnt meet the condition is applied, it should be rejected with the message INVALID CODE. Else, display the message COUPON APPLIED.

Output Example:

APPLY COUPON CODE

Enter coupon code: 20OFF

INVALID CODE

Enter coupon code: 10OFF

COUPON APPLIED

Hint: Make new ItemToPurchase object and use ItemToPurchase modifiers before using modifyItem() method

Rubric: 1 point for correct implementation of ItemToPurchase class

3 points for correct implementation of ShoppingCart class (0.5 deducted for each method not implemented or not working)

1 point for correct implementation of ShoppingCartManager

0.5 Points will be deducted each for lack of documentation, mo