With the significant changes made to the new release of Java Development Kit (JDK), this book will act as tutorial for programmers who need to make use of he new features now. Each new or updated package or feature is given a theoretical introduction, including a discussion of the role of the package or feature within the larger Java platform. Every technique described is accompanied by a sample program that provides a complete implementation and can be used as a starting point for creating new code. For packages that have been overhauled, a discussion of the relevant changes is provided in the context of what the Java programmer already knows about older versions of the package and special attention is given to anything that breaks backward compatibility.