In today’s digital era, programming has become an essential skill driving innovation across industries. Among the numerous programming languages available, Java continues to hold a prominent position due to its platform independence, robustness, security features, and widespread adoption in enterprise, web, and mobile application development. Its enduring relevance makes it a fundamental subject for students and professionals in the field of computer science and information technology. This book, JAVA PROGRAMMING, is a collaborative effort of multiple authors who have contributed their academic expertise and practical insights to develop a comprehensive and structured resource. The primary objective of this book is to provide readers with a strong foundation in Java programming while also equipping them with the skills required to solve real-world problems. The book is systematically organized to guide learners from basic to advanced concepts. It begins with an introduction to Java, its features, and programming environment, followed by detailed discussions on data types, operators, control structures, and arrays. It further emphasizes object-oriented programming principles such as classes, objects, inheritance, polymorphism, abstraction, and encapsulation, which form the core of Java. Advanced topics including exception handling, multithreading, file handling, collections framework, networking, and GUI programming are also covered to provide a holistic understanding of the language. Each chapter is enriched with illustrative examples, practice problems, and coding exercises to enhance conceptual clarity and practical application skills. A key strength of this multi-author work lies in the diversity of perspectives and pedagogical approaches contributed by the authors. Despite varied inputs, special care has been taken to maintain consistency, clarity, and coherence throughout the text. The content has been aligned with current academic curricula and industry requirements, making it suitable for both classroom learning and self-study. This book is intended for undergraduate and postgraduate students, faculty members, and aspiring software developers. It will also serve as a useful reference for professionals seeking to strengthen their programming skills or prepare for technical interviews and competitive examinations. The authors express their sincere gratitude to their institutions, colleagues, and students for their continuous support and encouragement. We also thank the publisher for their guidance and cooperation in bringing this work to fruition. We welcome constructive feedback and suggestions from readers, which will help us improve and enhance future editions of this book.