Description: The nucleus of the Java programming language, the Java Virtual Machine (JVM) is the underlying technology responsible for Java's most distinctive features -- its cross-platform delivery, the small size of its compiled code, and its security capabilities. Knowledge of JVM internals is a huge advantage for Java programmers. It allows them to understand how their own programs operate to achieve better performance. While other books offer an overview of the Java Virtual Machine or paraphrase the standards documentation, Engel breaks new ground with this book by actually showing how to write programs for the Java Virtual Machine. In addition, Engel explains how to write JVM programs directly, without the aid of a Java compiler. Security designers will learn how the JVM verification algorithm works, and will be better equipped to build their own secure Java systems. Language designers will be able to create languages that run on top of the JVM, thereby acquiring its portability and performance. This book is completely up-to-date, covering the many fundamental changes made to the newest incarnation of the JVM and is compatible with all versions of Java: 1.0, 1.1, and 1.2.

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