oop-polymorphism

What problem does it solve?

Use this skill when designing object-oriented systems that benefit from interchangeable implementations behind a common interface. It helps you decouple callers from concrete classes and enables runtime substitution of components.

Core Features & Use Cases

• Interface-based polymorphism: Define a single interface and multiple implementations to swap behavior without changing client code.
• Extensible architectures: Add new implementations (e.g., CreditCard, PayPal, BankTransfer) without touching existing usage sites.
• Use Case: Build a payment processor that can try multiple methods and select the first valid option at runtime.

Quick Start

Create a PaymentMethod interface with process() and isValid() methods, implement CreditCard, PayPal, and BankTransfer, and wire them into a PaymentProcessor that iterates available methods until one succeeds.