Java Programming in Practice

This is a practice-oriented book on Java programming, written for learners who want to turn their knowledge of the language's syntax into working code. Built around the principle of "enough theory, a focus on practice, and learning by doing," it organizes its material around the core features of the Java language and the development skills most often used in real work. Through step-by-step explanations and worked examples, it helps readers grasp the basic ideas of object-oriented programming and gradually master the common practices and techniques of practical coding. The content begins with setting up a development environment and covers the fundamentals of syntax before moving on to classes and objects, encapsulation, inheritance and polymorphism, exception handling, strings and arrays, the collections framework, input/output and database access, and also touches on application development topics such as graphical user interfaces. Most of the examples are drawn from real development situations, so that readers can build a complete body of knowledge along a path where they can understand what they read, learn what is taught, and apply what they learn, rather than merely memorizing concepts. Because the book emphasizes hands-on practice, readers can read and write as they go, debugging and reviewing along the way, turning each chapter's key points into runnable small programs or mini-projects. It is suitable both as a companion textbook for university Java courses in computer science and related fields, and as a reference for various Java examinations, as well as an advanced reader for self-taught learners who already have some foundation and want to fill gaps in their engineering practice. Note that different editions of this book differ in their chapter organization and choice of examples; readers should consult the copyright page of the edition they hold.