Question

Write a shoppingcartmanager.java that contains a main method for this code in java

Itemtopurchase.java

public class ItemToPurchase {
   // instance variables
   private String itemName;
   private String itemDescription;
   private int itemPrice;
   private int itemQuantity;
   // default constructor
   public ItemToPurchase() {
       this.itemName = "none";
       this.itemDescription = "none";
       this.itemPrice = 0;
       this.itemQuantity = 0;
   }
   public ItemToPurchase(String itemName, int itemPrice, int itemQuantity,String itemDescription) {
       this.itemName = itemName;
       this.itemDescription = itemDescription;
       this.itemPrice = itemPrice;
       this.itemQuantity = itemQuantity;
   }
   // method to set name of the item
   public void setName(String name) {
       itemName = name;
   }
   // method to set price of the item
   public void setPrice(int price) {
       itemPrice = price;
   }
   // method to set quantity of the item
   public void setQuantity(int quantity) {
       itemQuantity = quantity;
   }
   public void setDescription(String description) {
       itemDescription = description;
   }
   // method to get name of the item
   public String getName() {
       return itemName;
   }
   // method to get price of the item
   public int getPrice() {
       return itemPrice;
   }
   // method to get quantity of the item
   public int getQuantity() {
       return itemQuantity;
   }
   public String getDescription() {
       return itemDescription;
   }
   public void printItemPurchase() {
       System.out.println(itemName + " " + itemQuantity + " @ $" + itemPrice + " = $" + (itemPrice * itemQuantity));
   }
   public void printItemDescription() {

       System.out.println(itemName+": "+itemDescription);
   }
}

*******************

shoppingcart.java

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class ShoppingCart {
   private String customerName;
   private String currentDate;
   private List<ItemToPurchase> cartItems=new ArrayList<>();
   ShoppingCart() {
       customerName = "none";
       currentDate = "January 1, 2016";
   }
   ShoppingCart(String customerName, String currentDate) {
       super();
       this.customerName = customerName;
       this.currentDate = currentDate;
   }
   public String getCustomerName() {
       return customerName;
   }
   public String getDate() {
       return currentDate;
   }
   public void addItem(ItemToPurchase item) {
       cartItems.add(item);
   }
   public void removeItem(String itemName) {
       boolean check = false;
       for (ItemToPurchase item : cartItems) {
           if(item.getName().equalsIgnoreCase(itemName)) {
               cartItems.remove(item);
               check=true;
           }
       }
       if(!check)
           System.out.println("Item not found in cart. Nothing removed.");
   }
   public void modifyItem(ItemToPurchase item) {
       boolean check = false;
       for (ItemToPurchase itemToPurchase : cartItems) {
           if(itemToPurchase.getName().equalsIgnoreCase(item.getName())) {
               cartItems.remove(itemToPurchase);
               cartItems.add(item);
               check=true;
           }
       }
       if(!check)
           System.out.println("Item not found in cart. Nothing modified.");
   }
   public int getNumItemsInCart() {
       int total=0;
       for (ItemToPurchase item : cartItems) {
           total+=item.getQuantity();
       }
       return total;
   }
   public int getCostOfCart() {
       int cost=0;
       for (ItemToPurchase item : cartItems) {
           cost+=item.getPrice()*item.getQuantity();
       }
       return cost;
   }
   public void printTotal() {
       System.out.println(customerName+"'s Shopping Cart - "+currentDate);
       System.out.println("Number of Items: "+getNumItemsInCart());
       System.out.println();
       for (ItemToPurchase item : cartItems) {
           System.out.println(item.getName()+" "+item.getQuantity()+" @ $"+item.getPrice()+" = $"+(item.getQuantity()*item.getPrice()));
       }
       System.out.println();
       System.out.println("Total: $"+getCostOfCart());
   }
   public void printDesciptions() {
       System.out.println(customerName+"'s Shopping Cart - "+currentDate);
       System.out.println();
       System.out.println("Item Descriptions");
       for (ItemToPurchase item : cartItems)
           System.out.println(item.getName()+": "+item.getDescription());
   }
   public static void main(String[] args) {
       Scanner sc=new Scanner(System.in);
       System.out.println("Enter Customer's Name:");
       String name=sc.nextLine();
       System.out.println("Enter Today's Date:");
       String date=sc.nextLine();
       ShoppingCart cart=new ShoppingCart(name,date);
       System.out.println();
       System.out.println();
   }
}

Answer 1

Here I am providing the answer for the above question:

Code:

import java.util.Scanner;

public class ShoppingCartManager
{
   public static void main(String[] args)
   {
   Scanner sc=new Scanner(System.in);
   System.out.println("Enter Customer's Name:");
   String name=sc.nextLine();
   System.out.println("Enter Today's Date:");
   String date=sc.nextLine();
     
   ShoppingCart cart=new ShoppingCart(name,date);
   System.out.println("Enter total number of items:");
   int n=sc.nextInt();
   sc.nextLine();
   for(int i=1;i<=n;i++)
   {
       System.out.println("Enter item"+i+"name:");
       String item=sc.nextLine();
       System.out.println("Enter item"+i+"description:");
       String description=sc.nextLine();
       System.out.println("Enter item"+i+"price:");
       int price=sc.nextInt();
       System.out.println("Enter item"+i+"quantity:");
       int quantity=sc.nextInt();
       sc.nextLine();
       cart.addItem(new ItemToPurchase(item,price,quantity,description));
   }
  
   cart.printTotal();
   cart.printDesciptions();
   }
}

Screenshot of code:

Output:

Hoping that the above answer will help you...Thank you...