Strategy Pattern | Behavioral Design Patterns Series

Ever struggled with long if-else chains in your code? This pattern fixes that. In this video, we will understand the Strategy Design Pattern in Java, a widely used Behavioral Design Pattern that helps eliminate complex if-else logic and makes code more flexible and scalable. The Strategy pattern allows you to define a family of algorithms, encapsulate them, and make them interchangeable at runtime without modifying existing code. In this tutorial, we will implement the Strategy Pattern using a real-world payment example and see how it follows SOLID principles, especially the Open/Closed Principle. 📌 Topics covered in this video: What is the Strategy Design Pattern Problem with if-else based implementation Implementing Strategy Pattern in Java Strategy Interface (Payment) Concrete Strategies (Credit Card, PayPal, Bitcoin, Apple Pay) Context Class (ShoppingCart) How Strategy Pattern follows Open/Closed Principle Real-world use cases and best practices 📘 Blog Reference 👉 https://piyushanandmittal.blogspot.com/2026/03/javadesignpatternstrategy.html If you enjoy learning about Java, System Design, Azure, and Software Engineering concepts, subscribe for more developer-focused content.