Build Clean Code and Practice Real Example 

Design Patterns allow you to create more flexible, elegant, and ultimately reusable designs without having to rediscover the design solutions.
Design Patterns as your guide, you will learn how these patterns fit into the software development process.
All patterns are compiled from real systems and are based on real-world examples.
Each pattern also includes code that demonstrates how it may be implemented in object-oriented programming languages like Java.The

book is divided into 2 parts:
1. The first part vividly explains the concept of each design pattern through life
2. The second part applies design patterns to actual project examples