Developing application software plays a crucial role in an enterprise and thus knowledge of programming language has become more essential. This book offers a comprehensive study package of the core concepts of Java programming, with real-world examples from the industry, varieties of concepts like marker interface, serialization, externalization, multithreading, collection framework etc., making it well-suited for ocjp/scjp programs. Special coverage of utilities as (a) Internet programming concepts, (B) benefits of executing Java programs, (C) advantages of updating new features, (D) ways of increased user performance, (e) security features and enhancements, and (Brad) improved developer productivity.