This book details the design and implementation of professional-grade Java custom user interface components, primarily for use within Internet browsers. Interoperability with current Internet browsers requires design patterns that provide efficient screen rendering while minimizing the component download time. This book demonstrates for developing and deploying client-side Java components and applets that are efficient, and compatible with modern Internet browsers, without the use of external software or plug-ins. This book introduces custom component development by utilizing a simple example, which has been refined during its use within a college course. It then walks through the design and development of a number of examples derived from actual production code. The book is supported by a download containing thousands of lines of tested code along with comprehensive documentation. Visual design, user interface project management, and code maintenance are also discussed, putting the code details into perspective. Who is this book for? This book is for Java developers seeking a detailed introduction to designing and implementing custom user-interface components and frameworks. This book contains material that will prove useful to both software engineers developing commercial-quality, web-based applications and web developers interested in creating truly unique web content. The book assumes the reader is familiar with the Java programming language and has had some exposure to the Abstract Windowing Toolkit (AWT), as well as JFC/Swing. What does this book cover? Visual design of user interfaces; Using AWT and Swing in custom components; Implementing design patterns; Browser interoperability; Building component frameworks; Detailed examination of tested production quality code; Code maintenance.