It took four years, but with Head First Java Java category introductory book finally come of age. Kathy Sierra and Bert Bates deserve rich praise - and big sales - for developing a new way this book is teaching the Java programming language, because any reader with even a bit of discipline will come away with true understanding of how language works. Readers get great exposure to object-oriented design and implementation, serialization, neatwork programming, threads, and Remote Method Invocation (RMI). Key to 'teaching style of the author is carefully designed graphics Wall. - David Topics covered: The Java programming language for people who do not have Java experience, and even people with no programming experience at all. Key concepts such as reading a list of Java features: Object oriented design, variable type and scope, object properties and methods, inheritance and polymorphism, exceptions, graphical user interface (GUI), network connectivity, Java archives (JAR files), and Remote Method Invocation (RMI).