Your Tasks Complete the classes (1-4) shown in the UML diagram and described bel

Question

Your Tasks Complete the classes (1-4) shown in the UML diagram and described below. Also complete the testing described below (5) 1. Item Attributes Main i. name-stores the name of the item ii. price-stores the price for a single item ili. quantity-stores the quantity of this ShoppingSimulator item purchased Methods 912 i. Constructor-initializes the Item object ii getPrice-returns the price of a single iii. getName-returns the name of this item given a name, price and quantity item iv getQuantity-returns the quantity of thisITTA CAP: SEC rinal in . addQuantity (int amt)-increase the ioString-return a string with the items inameistring noabie) : vosa item purchased -Ccnstructor) getTotalPrice: double quantity of this item by amt name, quantity and the total price. The total price is the item's price times its quantity. Item 2. Shopping Cart Attributes -name: String -price: double i. itemList-array of the item objects in the shopping cart getPrice): double ii numItems-the total number of unique items in the cart. INITIAL CAP 5- static constant representing the size of the array initially GROWBY-3-static constant that defines how much the size of the array s increased if it becomes full. iv. - Methods i. Constructor initializes array StemsList to be of size INITIAL CAP and initializes numItems as O ii. getTotalPrice-returns the total price of the items in the cart. This should be the sum of il. get I tent ndex-H itenList has an item with the name passed in, return the index of that iv. display-print out the name, total price and quantity of each item in the itemList the price quantity of each item in the cart. item in the array. Otherwise return-1 (Hint: use tostring 0 of item).

Explanation / Answer

here is your program : -------------->>>>>>>>>

Item.java : ---------->>>>>>>>

public class Item{
private int quantity;
private String name;
private double price;

public Item(String n,double p,int q){
  quantity = q;
  name = n;
  price = p;
}

public int getQuantity(){
  return quantity;
}

public String getName(){
  return name;
}

public double getPrice(){
  return price;
}

public void addQuantity(int quan){
  quantity = quantity + quan;
}

public String toString(){
  return "Name : "+name+" Price : "+price+" Quantity : "+quantity;
}
}

ShoppingCart.java : ---------->>>>>>>>>

public class ShoppingCart{
private Item[] itemList;
private int numItems;
public static final int INITIAL_CAP = 5;
public static final int GROW_BY = 3;

public ShoppingCart(){
  itemList = new Item[INITIAL_CAP];
  numItems = 0;
}

public double getTotalPrice(){
  double pr = 0.0;
  for(int i = 0;i<numItems;i++){
   pr = pr + (itemList[i].getPrice()*itemList[i].getQuantity());
  }

  return pr;
}

public int getItemIndex(String name){
  for(int i = 0;i<numItems;i++){
   if(itemList[i].getName().equals(name)){
    return i;
   }
  }

  return -1;
}

public void display(){
  for(int i = 0;i<numItems;i++){
   System.out.println(itemList[i]);
  }
}

public void increaseSize(){
  int t = itemList.length;
  t = t + ShoppingCart.GROW_BY;
  Item[] temp = new Item[t];
  for(int i = 0;i<numItems;i++){
   temp[i] = itemList[i];
  }
  itemList = temp;
}

public void addToCart(Item new_item){
  int n = getItemIndex(new_item.getName());
  if(n == -1){
   if(numItems >= itemList.length){
    increaseSize();
   }
   itemList[numItems++] = new_item;
  }else{
   itemList[n].addQuantity(new_item.getQuantity());
  }
}
}

ShoppingSimulator.java : ------------>>>>>>>>>

import java.util.Scanner;

public class ShoppingSimulator{
private Scanner sc;
private ShoppingCart cart;

public ShoppingSimulator(){
  sc = new Scanner(System.in);
  cart = new ShoppingCart();
}

public void go(){
  boolean toadd = true;
  String name;
  int quan;
  double price;
  while(toadd){
   System.out.println("Enter The Item Name : ");
   name = sc.next();
   while(true){
    System.out.println("Enter the Item Price : ");
    price = sc.nextDouble();
    if(price >= 1 && price <= 100){
     break;
    }
    System.out.println("Enter Price Between 1-100");
   }
   while(true){
    System.out.println("Enter The quantity : ");
    quan = sc.nextInt();
    if(quan >= 1 && quan <= 10){
     break;
    }
    System.out.println("Enter quantity Between 1-10");
   }
   cart.addToCart(new Item(name,price,quan));
   System.out.println("Want to add More Item (y/n) ? ");
   if(sc.next().equals("n")){
    break;
   }
  }
  cart.display();
  System.out.println("Please Pay ...... "+cart.getTotalPrice()+" rs.");
}
}

Main.java : --------->>>>>>>

public class Main{
public static void main(String[] args) {
  ShoppingSimulator sm = new ShoppingSimulator();
  sm.go();
}
}

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