can anyone please help me with this?

Note: Creating multiple Scanner objects for the same input stream yields unexpected behavior. Thus, good practice is to use a single Scanner object for reading input from System.in. That Scanner object can be passed as an argument to any methods that read input.

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 item quantity (default values of 0). (1 pt)

Public 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, 2016"

ArrayList cartItems

Default 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 EMPTY

printDescriptions()

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 

the extended "Online shopping cart" program question was this:

(1) Create two files to submit:

ItemToPurchase.java - Class definition

ShoppingCartPrinter.java - Contains main() method

Build the ItemToPurchase class with the following specifications:

Private fields

String itemName - Initialized in default constructor to "none"

int itemPrice - Initialized in default constructor to 0

int itemQuantity - Initialized in default constructor to 0

Default constructor

Public member methods (mutators & accessors)

setName() & getName() (2 pts)

setPrice() & getPrice() (2 pts)

setQuantity() & getQuantity() (2 pts)

(2) In main(), prompt the user for two items and create two objects of the ItemToPurchase class. Before prompting for the second item, call scnr.nextLine(); to allow the user to input a new string. (2 pts) Ex:

Item 1 Enter the item name: Chocolate Chips Enter the item price: 3 Enter the item quantity: 1 Item 2 Enter the item name: Bottled Water Enter the item price: 1 Enter the item quantity: 10 

(3) Add the costs of the two items together and output the total cost. (2 pts) Ex:

TOTAL COST Chocolate Chips 1 @ $3 = $3 Bottled Water 10 @ $1 = $10 Total: $13 

my code was

import java.util.*; public class ShoppingCartPrinter{

public static void main (String[] args){ Scanner sc=new Scanner(System.in); ItemToPurchase item1=new ItemToPurchase(); ItemToPurchase item2=new ItemToPurchase(); System.out.println("Item 1"); System.out.println("Enter the item name:"); item1.setName(sc.nextLine()); System.out.println("Enter the item price:"); item1.setPrice(sc.nextInt()); sc.nextLine(); System.out.println("Enter the item quantity:"); item1.setQuantity(sc.nextInt()); sc.nextLine(); System.out.println(""); System.out.println("Item 2"); System.out.println("Enter the item name:"); item2.setName(sc.nextLine()); System.out.println("Enter the item price:"); item2.setPrice(sc.nextInt()); sc.nextLine(); System.out.println("Enter the item quantity:"); item2.setQuantity(sc.nextInt()); sc.close();

System.out.println(""); System.out.println("TOTAL COST"); System.out.println(item1.getName()+" "+item1.getQuantity()+" @ $"+item1.getPrice()+" = $"+(item1.getPrice()*item1.getQuantity())); System.out.println(item2.getName()+" "+item2.getQuantity()+" @ $"+item2.getPrice()+" = $"+(item2.getPrice()*item2.getQuantity())); System.out.println(""); System.out.println("Total: $"+(item1.getPrice()*item1.getQuantity()+item2.getPrice()*item2.getQuantity())); } }

and

public class ItemToPurchase{ private String itemName; private int itemPrice; private int itemQuantity;

public ItemToPurchase(){ this.itemName="none"; this.itemPrice=0; this.itemQuantity=0; } public void setName(String itemName){ this.itemName=itemName; } public String getName(){ return this.itemName; } public void setPrice(int itemPrice){ this.itemPrice=itemPrice; } public int getPrice(){ return this.itemPrice; } public void setQuantity(int itemQuantity){ this.itemQuantity=itemQuantity; } public int getQuantity(){ return this.itemQuantity; } }

which the zybooks program said I got correct.