Java Class Problem

This Java code defines an interface Payment and two classes CreditCardPayment and PayPalPayment that implement this interface.

The Payment interface declares a method processPayment(double amount) which is implemented by both CreditCardPayment and PayPalPayment classes.

In the CreditCardPayment class, there are private fields cardNumber and cardHolderName along with a constructor to initialize them. It also implements the processPayment method to print a message indicating the processing of a credit card payment along with the card number and card holder name.

Similarly, the PayPalPayment class has a private field email and a constructor to initialize it. It implements the processPayment method to print a message indicating the processing of a PayPal payment along with the email.

The Main class contains the main method which serves as the entry point of the program. It prompts the user to input the payment amount, credit card details (card number and card holder name), and PayPal email using a Scanner. Then, it creates instances of CreditCardPayment and PayPalPayment classes with the provided details and calls the processPayment method on each instance to simulate the processing of the payments.

Finally, the Scanner object is closed to release system resources.

package imran;
import java.util.Scanner;


interface Payment {
    void processPayment(double amount);
}

class CreditCardPayment implements Payment {
    private String cardNumber;
    private String cardHolderName;

    public CreditCardPayment(String cardNumber, String cardHolderName) {
        this.cardNumber = cardNumber;
        this.cardHolderName = cardHolderName;
        
        
        
    }

    @Override
    public void processPayment(double amount) {
        System.out.println("Processing credit card payment of RS  " + amount + " by card number " + cardNumber + " (Card Holder: " + cardHolderName + ")");
    }
}

class PayPalPayment implements Payment {
    private String email;

    public PayPalPayment(String email) {
        this.email = email;
    }

    @Override
    public void processPayment(double amount) {
        System.out.println("Processing PayPal payment of " + amount + " for email " + email);
    }
}

       class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        System.out.print("Enter your payment amount: ");
        double amount = scanner.nextDouble();
        scanner.nextLine(); 
        
        
        System.out.print("Enter your credit card number: ");
        String cardNumber = scanner.nextLine();
        System.out.print("Enter your card holder name: ");
        String cardHolderName = scanner.nextLine();
        
        
        
        System.out.print("Enter PayPal email: ");
        String email = scanner.nextLine();

        CreditCardPayment c = new CreditCardPayment(cardNumber, cardHolderName);
        PayPalPayment p = new PayPalPayment(email);

        c.processPayment(amount);
        p.processPayment(amount);

        scanner.close();
    }
}