I have shared the sample code on the GITHUB link provided in the book. This code will give a depth understanding of how to implement these patterns.
Paritosh Chandorkar is a seasoned Software Engineer and has 19+ years of experience in the analysis, design, development and maintenance of software systems. He is SUN Certified Java Programmer and Oracle Certified Java EE Enterprise Architect. He likes to utilize his architecture and design knowledge in his assignments and projects. Through this book, he is trying to bring awareness to software developers about the Design and Architecture Patterns.
Paritosh is also a US, SA, and GB patent holder. A patent is on "A Computer-Implemented System & Method for Image Steganography"