https://yennj12.js.org/yennj12_blog_V4/tags/gang-of-four/Recent content in Gang of Four on YennJ12 Engineering BlogHugo -- gohugo.ioen-usMon, 29 Sep 2025 07:45:06 +0800https://yennj12.js.org/yennj12_blog_V4/posts/essential-design-patterns-java-comprehensive-guide/Mon, 29 Sep 2025 07:45:06 +0800https://yennj12.js.org/yennj12_blog_V4/posts/essential-design-patterns-java-comprehensive-guide/🎯 Introduction Design patterns are proven solutions to commonly occurring problems in software design. They represent best practices evolved over time and provide a shared vocabulary for developers. This comprehensive guide explores the most essential design patterns in Java, demonstrating practical implementations with real-world examples. We’ll cover the three main categories of design patterns from the Gang of Four: Creational, Structural, and Behavioral patterns, showing how to implement them effectively in modern Java applications.