16.20 Ch 7 Program: Online shopping cart (continued) (Java) This program extends

Question

16.20 Ch 7 Program: Online shopping cart (continued) (Java)

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 fieldsstring itemDescription - Initialized in default constructor to "none"Parameterized constructor to assign item name, item description, item price, and item quantity (default values of 0). (1 pt)Public member methodssetDescription() mutator & getDescription() accessor (2 pts)printItemCost() - Outputs the item name followed by the quantity, price, and subtotalprintItemDescription() - 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 definitionShoppingCartManager.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 fieldsString customerName - Initialized in default constructor to "none"String currentDate - Initialized in default constructor to "January 1, 2016"ArrayList cartItemsDefault constructor

Parameterized constructor which takes the customer name and date as parameters (1 pt)

Public member methods

getCustomerName() accessor (1 pt)getDate() accessor (1 pt)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() (2 pts)Returns quantity of all items in cart. Has no parameters.getCostOfCart() (2 pts)Determines and returns the total cost of items in cart. Has no parameters.printTotal()Outputs total of objects in cart.If cart is empty, output this message: SHOPPING CART IS EMPTYprintDescriptions()Outputs each item's description.

Ex. of printTotal() output:

John Doe's Shopping Cart - February 1, 2016 Number of Items: 8 Nike Romaleos 2 @ $189 = $378 Chocolate Chips 5 @ $3 = $15 Powerbeats 2 Headphones 1 @ $128 = $128 Total: $521

Ex. of printDescriptions() output:

John Doe's Shopping Cart - February 1, 2016 Item Descriptions Nike Romaleos: Volt color, Weightlifting shoes Chocolate Chips: Semi-sweet Powerbeats 2 Headphones: Bluetooth headphones

(3) In main(), prompt the user for a customer's name and today's date. Output the name and date. Create an object of type ShoppingCart. (1 pt) 

Ex.

Enter Customer's Name: John Doe Enter Today's Date: February 1, 2016 Customer Name: John Doe Today's Date: February 1, 2016

(4) Implement the printMenu() method. 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 the 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. (3 pts) 

Ex:

MENU a - Add item to cart d - Remove item from cart c - Change item quantity i - Output items' descriptions o - Output shopping cart q - Quit Choose an option:

(5) Implement Output shopping cart menu option. (3 pts) 

Ex:

OUTPUT SHOPPING CART John Doe's Shopping Cart - February 1, 2016 Number of Items: 8 Nike Romaleos 2 @ $189 = $378 Chocolate Chips 5 @ $3 = $15 Powerbeats 2 Headphones 1 @ $128 = $128 Total: $521

(6) Implement Output item's description menu option. (2 pts) 

Ex.

OUTPUT ITEMS' DESCRIPTIONS John Doe's Shopping Cart - February 1, 2016 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. (3 pts) 

Ex:

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. (4 pts) 

Ex:

REMOVE ITEM FROM CART Enter name of item to remove: Chocolate Chips

(9) Implement Change item quantity menu option. Hint: Make new ItemToPurchase object and use ItemToPurchase modifiers before using modifyItem() method. (5 pts) 

Ex:

CHANGE ITEM QUANTITY Enter the item name: Nike Romaleos Enter the new quantity: 3

Explanation / Answer

Answer:

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

OUTPUT:

Enter Customer's Name:John Doe

Enter Today's Date:March 3, 2017

Customer Name:John Doe
Today's Date:March 3, 2017
MENU:
a - Add Item To Cart
d - Remove Item from Cart
c - Change Item Quantity
i - Output Items' Description
o - Output Shopping Cart
q - Quit
Enter an option:a
ADD ITEM TO CART
Enter Item name:
Nike Romaloes
Enter Item description:
Volt Color, weightlifting shoes
Enter Item price:
189
Enter Item quantity:
2
Enter an option:a
ADD ITEM TO CART
Enter Item name:
Chocolate Beats
Enter Item description:
Semi-sweet powerbeats 2
Enter Item price:
3
Enter Item quantity:
5
Enter an option:a
ADD ITEM TO CART
Enter Item name:
Powerbeats 2 Headphones
Enter Item description:
Bluetooth Headphones
Enter Item price:
128
Enter Item quantity:
1
Enter an option:i
OUTPUT ITEMS' DESCRIPTIONS
John Doe's Shopping Cart - March 3, 2017
ItemToPurchase Descriptions
Nike Romaloes: Volt Color, weightlifting shoes
Chocolate Beats: Semi-sweet powerbeats 2
Powerbeats 2 Headphones: Bluetooth Headphones
Enter an option:o
OUTPUT SHOPPING CART
John Doe's Shopping Cart - March 3, 2017
Number of Items: 8
Nike Romaloes 2 @ $189 = $378
Chocolate Beats 5 @ $3 = $15
Powerbeats 2 Headphones 1 @ $128 = $128
Total: $521
Enter an option:c
CHANGE ITEM QUANTITY
Enter item name:
Nike Romaloes
Enter the new quantity:
3
Enter an option:o
OUTPUT SHOPPING CART
John Doe's Shopping Cart - March 3, 2017
Number of Items: 9
Nike Romaloes 3 @ $189 = $567
Chocolate Beats 5 @ $3 = $15
Powerbeats 2 Headphones 1 @ $128 = $128
Total: $710
Enter an option:q

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