Chain of Responsibility Design Pattern | Java Example for System Design Interviews

Design Pattern #11: Chain of Responsibility Design Pattern The chain of responsibility design pattern is a behavioral design pattern that allows a request to pass sequentially through a chain of handlers until one of them processes it. Each handler in the chain either handles the request or forwards it to the next chain handler! In this design pattern tutorial, we break down what is chain of responsibility with a real-world customer support escalation analogy — showing how a ticket moves up the chain when lower-level handlers can't resolve it. Then we jump straight into IntelliJ for a complete hands-on coding session: first with a hard-coded implementation where each handler declares its successor in the constructor itself, and then we refactor to dynamically assign the next handler at runtime — showing you exactly when and why to use the chain of responsibility pattern in real-world Java projects. If you're preparing for technical interview rounds or working on system design, mastering the chain of responsibility pattern java implementation — alongside other java design pattern entries like Strategy, Observer, and Proxy — is non-negotiable. This video is part of our all design pattern java example playlist, covering every design pattern explanation with examples so you can ace any system design interview with confidence. 00:00 : Chain of Responsibility Introduction 01:15 : Chain of Responsibility Implementation 10:50 : Chain of Responsibility Dynamic Initialization 📌 What You'll Learn: 1. What is the Chain of Responsibility Pattern and when to use it? 2. Chain of Responsibility class diagram walkthrough with Customer Support Analogy 3. Hard-coded handler chain implementation (constructor-based next handler) 4. Dynamic handler assignment — the flexible, production-ready approach To access the code: Clone below mentioned repository and checkout to branch : chain-of-responsibility Github Link: https://github.com/TheCuriousCoder-sg... #chainofresponsibility #chainofresponsibilitypattern #designpatterns #javadesignpattern #systemdesign #systemdesigninterview #coding #interview #java #designpatterntutorial Instagram :   / the.curious_coder