Once you've learned the fundamentals of Java, understanding Design Patterns is essential for writing clear, concise and effective code. This fully revised and updated book gives you a step-by-step guide to object-oriented development, using tried and trusted techniques. The examples have been kept simple, enabling you to concentrate on understanding the concepts and application of each pattern. All examples have been designed around a common theme, making it easier to see how they relate to each other and how you can adapt them to your applications. While the book assumes a basic knowledge of Java you don't need to be a guru. This book is perfect for the programmer wishing to take their skills to the next level, and feel confident about using Java in real applications. Coverage includes all 23 of the patterns from the "Gang of Four" work, additional patterns including Model-View-Controller, and simple UML diagrams.