Lesson: 79 | Interface Class

User Story

No user story. This is just another practice.

Solution

PaymentGateway Interface Class:

public interface PaymentGateway {
    void processPayment(Double amount);
    Boolean refundPayment(String transactionId);
}

PayPalGateway Class:

public class PayPalGateway implements PaymentGateway {
    public void processPayment(Double amount) {
        System.debug('Payment processed through PayPal for amount: $' + amount);
    }

    public Boolean refundPayment(String transactionId) {
        System.debug('Refund processed for transaction ID: ' + transactionId);
        return true;
    }
}

StripeGateway Class:

public class StripeGateway implements PaymentGateway {
    public void processPayment(Double amount) {
        // Code to process payment through Stripe API
        System.debug('Payment processed through Stripe for amount: $' + amount);
    }

    public Boolean refundPayment(String transactionId) {
        // Code to refund payment through Stripe API
        System.debug('Refund processed for charge ID: ' + transactionId);
        return true;
    }
}

PaymentGateway paypal = new PayPalGateway();
paypal.processPayment(100.00);
paypal.refundPayment("PAY1234");

PaymentGateway stripe = new StripeGateway();
stripe.processPayment(75.50);
stripe.refundPayment("CHARGE5678");

Prev You need to login to have access to the quizzes. MARK THIS AS UNDERSTOOD Next

Mastered by 8 users.

Exercises

A. Administrator | Exercises (59 lessons)

B. Flow Builder | Exercises (41 lessons)

C. Apex Beginner | Exercises (78 lessons)

D. Apex Intermediate | Exercises (90 lessons)

E. Integration | Exercises (4 lessons)

F. Lightning Web Component (LWC) Exercises (14 lessons)

Go to top

Login to your account

Lesson: 79 | Interface Class

User Story

Exercises