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

Overview of Java Annotation Processor

Developers, here we delve into the capabilities and significance of Java Annotation Processors. In the ever-evolving realm of Java, efficient and optimized code is paramount, and to achieve this, understanding the role of tools such as annotation processors becomes crucial. We’ll explore why Java Annotation Processors exist, how they differ from the widely used reflection mechanism, and the trade-offs in making the right choice for your projects.

Java Annotation Processors emerged as a powerful tool to address some challenges runtime reflection poses. While reflection allows dynamic inspection and manipulation of code elements during runtime, it comes with performance overhead and the potential for runtime errors. In contrast, annotation processors operate at compile time, offering a way to analyze and generate code based on annotations present in the source code. This shift from runtime to build time brings significant advantages, including...