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 metadata

In the dynamic landscape of Java programming, metadata emerges as a powerful tool, quietly working behind the scenes to bridge gaps between disparate paradigms and streamline conversion processes that define modern software development. But why do we have metadata in Java, and what role does it play in simplifying complex tasks, particularly in scenarios such as conversion or mapping operations?

At its core, metadata in Java is a critical facilitator, significantly easing the intricacies of processes such as converting Java entities to XML files or databases. The essence lies in its ability to decrease impedance between different paradigms, particularly when navigating the nuanced space between relational databases and Java objects.

Consider the scenario where Java, following its convention of camelCase (for example, clientId) collaborates with a relational database, which adheres to the snake_case convention, for example, client_id. This misalignment in naming...