Book Image

Mastering the Java Virtual Machine

By : Otavio Santana
Book Image

Mastering the Java Virtual Machine

By: Otavio Santana

Overview of this book

Mastering the Java Virtual Machine is a comprehensive guide that will take you into the heart of Java programming, guiding you through the intricate workings of the Java Virtual Machine (JVM) and equipping you with essential skills to become a proficient Java developer. You’ll start by understanding the JVM, exploring its architecture and how it executes Java code. Through detailed explanations and real-world examples, you’ll gain a deep understanding of JVM internals, enabling you to write efficient and optimized Java applications. As you progress, you’ll delve into memory management and execution, unraveling the complexities of heap and stack management, garbage collection, and memory profiling. You'll learn how memory is allocated and reclaimed in the JVM, as well as how to optimize memory usage and identify performance bottlenecks in your applications. With this knowledge, you’ll be able to create Java programs that are not only robust but also highly performant. By the end of this book, you’ll have the skills needed to excel in Java programming, writing efficient, maintainable code.
Table of Contents (19 chapters)
Free Chapter
1
Part 1: Understanding the JVM
5
Part 2: Memory Management and Execution
9
Part 3: Alternative JVMs
12
Part 4: Advanced Java Topics

Java Annotation Processor

In the dynamic landscape of Java programming, the ability to introspect and analyze code at runtime has long been facilitated by reflection. While reflection offers a powerful mechanism for inspecting and manipulating classes, fields, and methods, it comes with its trade-offs, such as performance overhead and the potential for runtime errors. Recognizing these challenges, a compelling alternative arises—shifting the focus from runtime to build time using Java Annotation Processors.

This chapter delves into the world of Java Annotation Processors, offering insights into their role as a robust tool for harnessing metadata during the compilation phase. By doing so, developers can sidestep the pitfalls associated with runtime reflection, understanding how to leverage annotation processors for enhanced code generation and manipulation. Through practical examples and hands-on exploration, you will discover the intricacies of integrating annotation processors...