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

Understanding Bytecodes

In the intricate world of the JVM, bytecode serves as the intermediary language that enables Java programs to transcend the boundaries of platform-specific hardware and operating systems. As we delve into the heart of JVM internals, this chapter focuses on deciphering the bytecode, a fundamental component in executing Java applications. Bytecode, represented as a set of instructions, acts as the bridge between high-level Java code and the machine-specific language of the underlying hardware. By comprehending bytecode, developers gain insights into the inner workings of the JVM, empowering them to optimize code performance and troubleshoot intricate issues.

At the core of bytecode lies a diverse set of instructions that dictate the low-level operations performed by the JVM. This chapter unravels the nuances of arithmetic operations, shedding light on how the JVM handles mathematical calculations. From essential addition and subtraction to more complex procedures...