Question
7.22 Ch 7 Program: Online shopping cart (continued) (Java) This is to submit to zybooks and the current code works but zybooks doesnt count it.
7.22 Ch 7 Program: Online shopping cart (continued) (Java)
This is to submit to zybooks and the current code works but zybooks doesnt count it. I have listed the errors that I can not figure out at the end. Please try to address them so I can see what the issue was. I've been given 5 "answers" that just added more errors or fixed nothing, with 2 of them being the exact same wrong answer, so far so please help me out here.
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 code I keep erroring out on is this.
ItemToPurchase.java
import java.util.*;
import java.util.ArrayList;
import java.util.ArrayList;
import java.util.Scanner;
class ItemToPurchase {
private String itemDescription;
private String name;
private double itemPrie;
private int itemQuantity;
public ItemToPurchase() {
itemDescription = "none";
itemQuantity = 0;
itemPrie = 0;
name = "";
}
public ItemToPurchase(String name, String description, double price,
int itemQuantity) {
this.itemDescription = description;
this.name = name;
this.itemPrie = price;
this.itemQuantity = itemQuantity;
}
public String getDescription() {
return itemDescription;
}
public void setDescription(String itemDescription) {
this.itemDescription = itemDescription;
}
public void printCost() {
System.out.println(name + " " + itemQuantity + " @ " + itemPrie
+ " = $" + (itemQuantity * itemPrie));
}
public void printDescription() {
System.out.println(name + " " + itemDescription);
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public double getPrice() {
return itemPrie;
}
public void setPrice(double itemPrie) {
this.itemPrie = itemPrie;
}
public int getQuantity() {
return itemQuantity;
}
public void setQuantity(int itemQuantity) {
this.itemQuantity = itemQuantity;
}
}
_____________________
ShoppingCart.java
import java.util.*;
import java.util.ArrayList;
class ShoppingCart {
private String customerName;
private String currentDate;
ArrayList cartItems = new ArrayList();;
public ShoppingCart() {
currentDate = "January 1, 2016";
customerName = "none";
}
public ShoppingCart(String name, String date) {
this.currentDate = date;
this.customerName = name;
}
public String getCustomerName() {
return customerName;
}
public void setCustomerName(String customerName) {
this.customerName = customerName;
}
public String getCurrentDate() {
return currentDate;
}
public void setCurrentDate(String currentDate) {
this.currentDate = currentDate;
}
public void addItem(ItemToPurchase i) {
cartItems.add(i);
}
public void removeItem(String name) {
boolean found = false;
;
for (ItemToPurchase i : cartItems) {
if (i.getName().equalsIgnoreCase(name)) {
cartItems.remove(i);
found = true;
break;
}
}
if (!found)
System.out.println("Item not found in cart. Nothing removed");
}
public void modifyItem(ItemToPurchase item) {
boolean found = false;
;
for (ItemToPurchase i : cartItems) {
if (i.getName().equalsIgnoreCase(item.getName())) {
if (i.getQuantity() != 0) {
i.setQuantity(item.getQuantity());
}
found = true;
break;
}
}
if (!found)
System.out.println("Item not found in cart. Nothing removed");
}
public int getNumItemsInCart() {
int sum = 0;
for (ItemToPurchase i : cartItems) {
sum = sum + i.getQuantity();
}
return sum;
}
public double getCostOfCart() {
double sum = 0;
for (ItemToPurchase i : cartItems) {
sum = sum + i.getPrice();
}
return sum;
}
public void printTotal() {
if (cartItems != null && cartItems.size() > 0) {
System.out.println(customerName + "'s Shopping Cart - "
+ currentDate);
System.out.println("Number of Items: " + cartItems.size());
System.out.println();
for (ItemToPurchase i : cartItems) {
i.printCost();
}
}
else {
System.out.println("SHOPPING CART IS EMPTY");
}
}
public void printDescriptions() {
System.out.println(customerName + "'s Shopping Cart - " + currentDate);
System.out.println("Number of Items: " + cartItems.size());
System.out.println();
System.out.println("Item Descriptions");
for (ItemToPurchase i : cartItems) {
i.printDescription();
}
}
}
______________________
ShoppingCartManager.java
import java.util.*;
import java.util.Scanner;
public class ShoppingCartManager {
public static void main(String[] args)
{
Scanner scan = new Scanner(System.in);
System.out.println("Enter Customer's Name:");
String customerName = scan.nextLine();
System.out.println("Enter Today's Date:");
String currentDate = scan.nextLine();
ShoppingCart s = new ShoppingCart(customerName, currentDate);
System.out.println();
System.out.println("Customer Name: " + s.getCustomerName());
System.out.println("Today's Date: " + currentDate);
printMenu(s);
}
public static void printMenu(ShoppingCart s) {
while (true) {
System.out.println("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: ");
Scanner scan = new Scanner(System.in);
char ch = scan.next().charAt(0);
scan.nextLine();
if (ch == 'a' || ch == 'A') {
System.out.println("ADD ITEM TO CART");
System.out.println("Enter Item Name: ");
String name = scan.nextLine();
System.out.println("Enter Item Description: ");
String itemDescritpion = scan.nextLine();
System.out.println("Enter Item Price: ");
int itemPrice = scan.nextInt();
System.out.println("Enter Item Quantity: ");
int quantity = scan.nextInt();
scan.nextLine();
ItemToPurchase item = new ItemToPurchase(name, itemDescritpion,
itemPrice, quantity);
s.addItem(item);
}
else if (ch == 'd' || ch == 'D') {
System.out.println("REMOVE ITEM FROM CART");
System.out.println("Enter name of item to remove: ");
String name = scan.nextLine();
s.removeItem(name);
}
else if (ch == 'c' || ch == 'C') {
System.out.println("CHANGE ITEM QUANTITY");
System.out.println("Enter the item name: ");
String name = scan.nextLine();
System.out.println("Enter the new quantity: ");
int quantity = scan.nextInt();
ItemToPurchase item = new ItemToPurchase();
item.setName(name);
item.setQuantity(quantity);
s.modifyItem(item);
}
else if (ch == 'I' || ch == 'i') {
System.out.println("OUTPUT ITEMS' DESCRIPTIONS");
s.printDescriptions();
}
else if (ch == 'O' || ch == 'o') {
System.out.println("OUTPUT SHOPPING CART");
s.printTotal();
}
else if (ch == 'q' || ch == 'Q') {
break;
}
}
}
}
These are the errors I am getting:
3: Unit testkeyboard_arrow_up
0 / 2
Tests default constructor and accessors for ShoppingCart
Compilation failed
zyLabsUnitTest.java:8: error: cannot find symbol if(testCart.getCustomerName() == "none" && testCart.getDate().equals("January 1, 2016")) { ^ symbol: method getDate() location: variable testCart of type ShoppingCart zyLabsUnitTest.java:17: error: cannot find symbol System.out.println("getDate() returns " + testCart.getDate()); ^ symbol: method getDate() location: variable testCart of type ShoppingCart 2 errors
4: Unit testkeyboard_arrow_up
0 / 1
Tests ShoppingCart("John Doe", "February 1, 2016") correctly initializes cart
Compilation failed
Compilation failed
zyLabsUnitTest.java:8: error: cannot find symbol if(testCart.getCustomerName() == "John Doe" && testCart.getDate() == "February 1, 2016") { ^ symbol: method getDate() location: variable testCart of type ShoppingCart zyLabsUnitTest.java:16: error: cannot find symbol System.out.println("getDate() returns " + testCart.getDate()); ^ symbol: method getDate() location: variable testCart of type ShoppingCart 2 errors
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started
Mastering Sports Analytics With R Insights From Soccer Nba Nfl Baseball Hockey Tennis Golf And Boxing
Authors: Lauren Gallardo
1st Edition
B0CHGB9X8T, 979-8860571174
