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

Decoding JVM execution

In the orchestration of JVM execution, the performance unfolds across distinct stages, each contributing to the seamless functionality of Java applications. The overture commences with the loading of the JVM, where the class loader diligently fetches and loads class files and bytecode into the memory, setting the stage for the ensuing performance.

As the curtains rise, the JVM’s execution engine takes the lead, dynamically interpreting bytecode in a stack-based execution model. Simultaneously, the data area is meticulously initialized, allocating memory spaces for the runtime components such as the heap and stack. This orchestrated dance culminates in integration with native elements, seamlessly linking native libraries to augment the application’s capabilities. Join us in the upcoming section as we delve deeper into the intricacies of JVM execution, unraveling the magic that transpires as Java applications come to life in this finely tuned symphony...