Observer Design Pattern| WizardGpt vs WizardSeek | Explained & Implemeted in JAVA

In this video, I explain the Observer Design Pattern in Java with a clear and practical example. 💻 Code Example: https://github.com/17Peeyush/System-Design/tree/main/LLD/ObserverDesignPattern 🚀 What you'll learn: What the Observer Pattern is ? When and why to use it ? How to implement it in Java ? A step-by-step example to make it easy to understand ? 0:00 Intro & story to understand observer pattern 0:54 Code Naïve approach 4:15 Drawback of naïve approach 6:06 Solving the problem encountered in naïve approach 8:04 Coding according to observer pattern 11:14 Understanding the difference between association & aggregation 20:00 Running code and understanding the output 20:58 Encountered concurrent modification exception 21:10 RCA for concurrent modification exception 23:25 Resolving exception 24:59 Gyaan !! #tag #Java #DesignPatterns #ObserverPattern #JavaTutorial #SoftwareEngineering