🚀 GoF Factory Method Design Pattern in Java | UML Diagram + Code | Amazon & Google Interview Prep 🔥

In this video, we explore the Factory Method Design Pattern in Java, one of the most important Gang of Four (GoF) Design Patterns frequently asked in Amazon, Google, and other big tech interviews. If you would like to connect or discuss Java, System Design, Design Patterns, or Software Engineering interviews, feel free to reach out. 🔗 LinkedIn https://www.linkedin.com/in/arnav-jain-555891194 ⏱️ Video Chapters 0:00 Introduction 0:19 What We Have Covered in This Series 1:05 Problem Introduction 1:46 Introduction to GoF Factory Method Pattern 2:11 Simple Factory Pattern Code Overview 3:01 Converting Simple Factory to GoF Factory Method Pattern 6:18 What We Achieved with the GoF Factory Method Pattern 7:57 UML Diagram Explanation 10:01 Difference Between Simple Factory and GoF Factory Method Before diving into the Factory Method Pattern, we first built a strong foundation by understanding the SOLID principles, which are essential for writing clean and maintainable object-oriented code. After that, we discussed the Simple Factory Pattern and understood how it simplifies object creation. Since the Simple Factory Pattern was already explained in the previous video, we will not go into its details again. Instead, in this video we focus on the GoF Factory Method Pattern. We will start with the problem statement, briefly revisit the Simple Factory code, and then convert the Simple Factory Pattern into the GoF Factory Method Pattern step by step. Finally, we will walk through the UML diagram of the Factory Method Pattern and understand the difference between Simple Factory and GoF Factory Method Pattern. This video is designed to help developers preparing for Low Level Design (LLD) interviews, as well as engineers who want to improve their understanding of Java Design Patterns and software architecture. ⸻ 📚 What You Will Learn ✔ What is the GoF Factory Method Pattern ✔ Why direct object creation can cause design problems ✔ Recap of Simple Factory Pattern ✔ How to convert Simple Factory → GoF Factory Method Pattern ✔ Step-by-step Java implementation ✔ Understanding the UML diagram of Factory Method Pattern ✔ Difference between Simple Factory and GoF Factory Method ⸻ 🎥 Previous Videos in This Series SOLID Principles https://youtu.be/n_pQ2P6xbxQ https://www.youtube.com/watch?v=7v_4GJuv6d8 https://www.youtube.com/watch?v=oAruFYjaZ1Y https://www.youtube.com/watch?v=EeDLMN7EPJs Simple Factory Pattern https://youtu.be/nyIZKWwU4_U Watch these videos to understand the complete journey from SOLID principles to Factory Design Patterns. ⸻ 👨‍💻 Who Should Watch This Video • Software Engineers preparing for Amazon / Google interviews • Developers learning Java Design Patterns • Engineers preparing for Low Level Design (LLD) • Backend developers improving software architecture skills ⸻ 👍 Support the Channel If this video helped you understand the Factory Method Pattern, please: 👍 Like the video 📢 Share it with other developers 🔔 Subscribe for more content on Java, System Design, and LLD interview preparation