Vaskaran Sarcar obtained his Master of Engineering in software engineering from Jadavpur University, Kolkata (India) and an MCA from Vidyasagar University, Midnapore (India). He was a National Gate Scholar (2007-2009) and has more than 12 years of experience in education and the IT industry. Vaskaran devoted his early years (2005-2007) to teaching at various engineering colleges and later he joined HP India PPS R&D Hub Bangalore and worked there until August, 2019. At the time of his retirement from the IT industry, he was a senior software engineer and a team lead at HP. To follow his dream and passion, Vaskaran is now a full-time author. Other Apress books by Vaskaran include: Interactive Object-Oriented Programming in Java (second edition), Java Design Patterns (second edition), Design Patterns in C#, Interactive C#, Interactive Object-Oriented Programming in Java, and Java Design Patterns.