System Design Full Course - Composite Design Pattern | Build File System (UML & Code) | System Design

Welcome to Lecture 19 of the Ultimate Low-Level Design (LLD) Series by Coder Army! fourth week for #lowleveldesign #systemdesign #8weeksLLdchallenge. We are doing 8 weeks challenge and going to complete the whole course within the duration with quality content on Youtube. Let’s learn LLD like never before and attain advance level mastery on this subject. In this step-by-step tutorial, you’ll learn how to implement the *Composite Design Pattern* by constructing a simple file system example. We’ll begin with a UML class diagram to illustrate the relationships between *File, **Folder, and the common **Component* interface. Then, we’ll translate that design into working code (Java) to show how files and folders can be treated uniformly by client code. *What you’ll learn in this video:* - Overview of the Composite Design Pattern and when to use it - UML class diagram walkthrough of a file system structure (File, Folder, Component) - Detailed code example demonstrating how to build File and Folder classes that share a common interface - How to recursively list, open, and calculate sizes of nested folders and files - Best practices for using Composite in real-world applications Whether you are a beginner in *design patterns* or looking to solidify your understanding of *structural patterns*, this example will help you master the core concepts. Join Coder Army Whatsapp Group: https://whatsapp.com/channel/0029Va6H0tbHVvTbcuT99Y1f Code and Notes: Github : https://github.com/adityatandon15/LLD Connect with Aditya Tandon Instagram : https://www.instagram.com/adityatandon2 LinkedIn : https://www.linkedin.com/in/adityatandon2 Twitter : https://x.com/adityatandon02 00:00 Introduction 01:14 Similarity with Tree DS 01:55 Designing File System 03:58 Situation without Composite Pattern 10:59 What is Composite Pattern all about 12:12 UML for File System 22:20 Standard UML 23:40 Code for file System 35:12 Standard Definition 36:17 Real World Problem #SystemDesign #LowLevelDesign #LLD #AdapterPattern #DesignPatterns #Cplusplus #JavaDevelopers #UMLDiagrams #TechInterviews #SoftwareEngineering #XMLtoJSON #CleanCode #SoftwareArchitecture #ObjectOrientedDesign #CodingWithExamples #CodeBetter #8WeeksLLDChallenge #JSON