Question

Question 3: The payment transaction scenario could be represented by the following hierarchy: Payments VISA MASTERCARD Paypal Create Payments as a superclass and VISA, MASTERCARD, PAYPAL as subclasses Create an interface PaymentsInterface with one method called payment Info. Create classes VISA, MASTERCARD, PAYPAL that implement Payments For each of the three classes (VISA, MASTERCARD, PAYPAL), create one constructor Constructors are used to create objects with initial balance with US dollars (USD). The interface class method "paymentinfo" should be overridden in the three classes (VISA, MASTERCARD, PAYPAL) to display the initial amount of each object. The USD to CAD conversion rate is 1 USD = 1.35 CAD and the extra processing fee for VISA payment is 2%, MASTERCARD payment is 2.5%, and PayPal is 1%. paymentinfo method is used to display information on the screen about the current amount in CAD. You should use polymorphism (e.g., Payments pay1 = new VISA (100)); Create a driver class with at least three different types (VISA, MASTERCARD, PAYPAL) of payments, and display the payments information in USD and the corresponding converted amount with processing fees in CAD. Also, show the total amount of money spent in CAD for all types of payments.

java.

Answer 1

If you have any problem with the code feel free to comment.

Program

interface PaymentsInterface{//interface
  
   public double paymentInfo();
}

//super class
class Payments implements PaymentsInterface{

   //no information was given about this class
  
   @Override
   public double paymentInfo() {
       return 0;
   }
  
}

//visa class
class Visa extends Payments{
   private double money;

   public Visa(double money) {
       this.money = money;
   }

   public double getMoney() {
       return money;
   }

   public void setMoney(double money) {
       this.money = money;
   }

   @Override
   public double paymentInfo() {
       //performing the calculation
       double cad=money*1.35;
       double fee = cad * 0.02;
       return cad - fee;
   }
}

//Master Card class
class MasterCard extends Payments{
   private double money;

   public MasterCard(double money) {
       this.money = money;
   }

   public double getMoney() {
       return money;
   }

   public void setMoney(double money) {
       this.money = money;
   }

   @Override
   public double paymentInfo() {
       double cad = money*1.35;
       double fee = cad * 0.025;
       return cad - fee;
   }
}

//Paypal class
class Paypal extends Payments{
   private double money;

   public Paypal(double money) {
       this.money = money;
   }

   public double getMoney() {
       return money;
   }

   public void setMoney(double money) {
       this.money = money;
   }

   @Override
   public double paymentInfo() {
       double cad = money*1.35;
       double fee = cad * 0.01;
       return cad - fee;
   }
}

public class Test{//driver class for testing
   public static void main(String[] args) {
       //creating objects
       Payments visa = new Visa(100);
       Payments ms = new MasterCard(100);
       Payments paypal = new Paypal(100);
      
       //showing info
       System.out.println("100 Dollar convert into CAD: ");
       System.out.println("Visa: "+visa.paymentInfo());
       System.out.println("Master Card: "+ms.paymentInfo());
       System.out.println("Paypal: "+paypal.paymentInfo());
      
       //showing total CAD
       System.out.println();
       double total = visa.paymentInfo()+ms.paymentInfo()+paypal.paymentInfo();
       System.out.printf("Total CAD: %.3f",total);
      
   }
}

Output

<terminated> Test (1) Java Application] C:Program FilesJavajre1.8.0_211\bin\javaw.exe (28-Nov-2019, 2:54:18 pm) 100 Dollar convert into CAD Visa 132.3 Master Card: 131.625 Paypal 133.65 Total CAD: 397.575