This book is a comprehensive guide to the Oracle’s 1Z0-815 exam. In this book, you shall progressively explore the Java language piece by piece. If you do not have prior programming experience, fear not, the book is designed to dive into Java as a beginner and serve as a revision for programmers with previous experience with the language. Every certification objective has been explained simply and thoroughly across various chapters. The book also has visual components to enable photographic memory. The designed sample questions and detailed answer explanations, emphasize essential concepts and prepare you for the D-Day.