Salient Features of Book: Readers without any background in software design should be able to understand it easily and completely. Presents the concepts of design patterns in simple and straightforward manner with a clear-cut explanation. After reading the book, readers will be in a position to come up with better designs than before and participate in design discussions which happen in their daily office work. The book provides enough realtime examples so that readers get better understanding of the design patterns and also useful for the interviews. We mean, the book should cover design interview questions. Table of Contents: 1. Introduction 11 2. UML Basics 15 3. Design Patterns Introduction 38 4. Creational Patterns 43 5. Structural Patterns 70 6. Behavioral Patterns 109 7. Glossary and Tips 161 8. Design Interview Questions 171 9. Miscellaneous Concepts 252 This book assumes you have basic knowledge about computer science. Main objective of the book is not to provide you the catalog of design patterns and design interview questions. This book is an enthusiastic celebration of design patterns, especially those which are given by GoF.