Adapter Design Pattern in Java Explained - How to Handle 3rd Party APIs & Legacy Code (UML + Code)

The Adapter Design Pattern is a structural design pattern that helps you integrate incompatible interfaces by acting as a bridge between two systems. In this video, you will learn: ✅ What is Adapter Design Pattern and why it’s essential ✅ Problems faced when integrating with 3rd party APIs without Adapter (like Stripe or Razorpay) ✅ How Adapter Pattern simplifies working with 3rd party payment gateways by wrapping their APIs into your own interface ✅ How Adapter helps to deal with legacy code without changing its core logic ✅ UML diagram explaining the pattern’s structure ✅ Clean Java code example demonstrating Adapter in action with payment APIs This pattern is a must-know for Java developers working with external APIs or maintaining legacy systems. 📚 Based on: https://nailyourinterview.org/intervi... #javainterview #AdapterPattern #designpatternsinjava #lowleveldesign Design #paymentgateways #stripe #razorpay #legacycode #javainterviewquestionsanswers shreyansh jain concept and coding ashish prajapati #lld #maang #faang Timestamps 0:00 Intro 0:10 Definition 1:20 Problems without Adapter Design Pattern 4:10 Using Adapter for 3rd Party API 6:00 Using Adapter for Legacy Code 8:00 When to use Adapter Design Pattern 9:20 Code