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

Fields and data repositories

In the unfolding exploration of class file intricacies, we now delve into the section dedicated to fields and data repositories. This pivotal section dissects the dynamic nexus where code and data converge within Java classes. Fields, the information custodians, transcend the realm of mere variables, encapsulating the very essence of data storage. As we navigate this section, we will unravel the diversity of field types, from instance variables to class variables, and decode their role in shaping the architecture of Java classes. Join us in uncovering the harmonious interplay between fields and the constant pool, where symbolic references enrich the language and contribute to the dynamic layer of data representation within the class files. This session serves as a gateway to the beating heart of Java programs, showcasing how fields become the dynamic vessels through which code transforms into executable realities within the JVM.

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