Write a java program implementing Encapsulation concept, for showing the busines

Question

Write a java program implementing Encapsulation concept, for showing the business logic for Amazon shopping website:

-Create the array variables for ItemID, ItemName, Price and generate the getters and setters.

- create a double variable discount and generate the getters and setters.

-Implement the Scanner class to implement the 3 values for each as shown in the output.

-And finally, create the method checkout to show the final checkout price after getting the discount deducted.

OUTPUT:

Please enter 3 item ids

32
65
85
Please enter items you want to buy
HeadPhone
GeoPro
SelifeStick
Please enter 3 items price
257.34
150.45
20
Enter Discount Percentage
40

Amazon Shopping List
------------------------------------------------
The item Ids you chose [32,65,85]
The items you are buying: [HeadPhones, GeoPro, SelfieStick]
The Price of Items you chose: [257.34,150.45,20.0]
The discount price being applied 40%
------------------------------------------------
The Discount Percentage being applied : 256.674

Explanation / Answer

Please find the below classes implemented for said requirement.

Items.java:

public class Items {

   private int itemID[];
   private String itemName[];
   private double price[];
   private double discount;
   public int[] getItemID() {
       return itemID;
   }
   public void setItemID(int[] itemID) {
       this.itemID = itemID;
   }
   public String[] getItemName() {
       return itemName;
   }
   public void setItemName(String[] itemName) {
       this.itemName = itemName;
   }
   public double[] getPrice() {
       return price;
   }
   public void setPrice(double[] price) {
       this.price = price;
   }
   public double getDiscount() {
       return discount;
   }
   public void setDiscount(double discount) {
       this.discount = discount;
   }

}

FinalBill.java :

public class FinalBill {

   /**
   * @param args
   */
   public static void main(String[] args) {
       // TODO Auto-generated method stub
       int itemID[] = new int[3];
       double price[] = new double[3];
       double discount;
       String itemName[] = new String[3];
       java.util.Scanner in = new java.util.Scanner(System.in);
       System.out.println("Please enter 3 item ids");
       itemID[0] = in.nextInt();
       itemID[1] = in.nextInt();
       itemID[2] = in.nextInt();
       System.out.println("Please enter items you want to buy");
       itemName[0] = in.next();
       itemName[1] = in.next();
       itemName[2] = in.next();
       System.out.println("Please enter 3 item prices");
       price[0] = in.nextDouble();
       price[1] = in.nextDouble();
       price[2] = in.nextDouble();  
       System.out.println("Please enter Discount percentage");
       discount = in.nextDouble();  
       Items items = new Items();
       items.setDiscount(discount);
       items.setItemID(itemID);
       items.setItemName(itemName);
       items.setPrice(price);
       PurchaseItems pi = new PurchaseItems();
       pi.checkOut(items); //calling for chekOut items
   }
}

PurchaseItems.java:

public class PurchaseItems {
   public boolean checkOut(Items items){
       System.out.println("Amazon Shopping List");
       System.out.println("-------------------------------------------");
       String tempItems = "";
       for(int i=0;i<items.getItemID().length; i++){
           if(i != items.getItemID().length - 1)
           tempItems = tempItems + items.getItemID()[i] + ",";
           else
       tempItems = tempItems + items.getItemID()[i];  
       }
       System.out.println("The item Ids you chose ["+tempItems+"]");
       String tempItemNames = "";
       for(int i=0;i<items.getItemName().length; i++){
           if(i != items.getItemName().length - 1)
               tempItemNames = tempItemNames + items.getItemName()[i]+ ",";
           else
               tempItemNames = tempItemNames + items.getItemName()[i];  
       }
       System.out.println("The items you are buying: ["+tempItemNames+"]");      
       String tempPrices = "";
       double totalprice = 0;
       for(int i=0;i<items.getPrice().length; i++){
           if(i != items.getPrice().length - 1){
               tempPrices = tempPrices + items.getPrice()[i]+ ",";
               totalprice = totalprice + items.getPrice()[i];
           }
           else{
               tempPrices = tempPrices + items.getPrice()[i];
               totalprice = totalprice + items.getPrice()[i];
           }
       }
       System.out.println("The Price of Items you chose: ["+tempPrices+"]");      
       System.out.println("The discount price being applied "+items.getDiscount()+" %");
       System.out.println("-------------------------------------------");
       double finalpriceafterdiscount = totalprice - (totalprice * items.getDiscount())/100;
       System.out.println("The Discount Percentage being applied : ["+finalpriceafterdiscount+"]");
      
       return true;
   }

}

Output:

Please enter 3 item ids
111
222
333
Please enter items you want to buy
Telephone
mobile
TV
Please enter 3 item prices
1150
15000.50
5999.99
Please enter Discount percentage
22

Amazon Shopping List
----------------------------------------------------------------------------
The item Ids you chose [111,222,333]
The items you are buying: [Telephone,mobile,TV]
The Price of Items you chose: [1150.0,15000.5,5999.99]
The discount price being applied 22.0 %
----------------------------------------------------------------------------
The Discount Percentage being applied : [17277.3822]

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