At the time of writing this book, I was fortunate to work with an excellent team at Packt Publishing. Their contributions vastly improved the presentation of this book. James Jones gave me a brilliant idea that led me to jump into the exciting project of teaching object-oriented programming in three popular, yet heterogeneous, programming languages. Divij Kotian helped me realize my vision for this book and provided many sensible suggestions regarding the text, format, and flow of the book, which is quite noteworthy. I would like to thank my technical reviewers and proofreaders for their thorough reviews and insightful comments. I was able to incorporate some of the knowledge and wisdom that they have gained in their many years in the software development industry. This book was possible because of their valuable feedback.

The entire process of writing a book requires a huge number of lonely hours. I couldn't have written an entire book without dedicating some time to play soccer with my sons, Kevin and Brandon, and my nephew, Nicolas. Of course, I never won a match.