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

Arithmetic operations

In this section, we embark on a focused exploration of one of the cornerstone aspects of bytecode: arithmetic operations. These operations are the mathematical underpinnings that breathe life into Java programs, shaping the numerical landscape of computations within the JVM.

Bytecode arithmetic operations follow a fundamental principle: they operate on the first two values on the operand stack, performing the specified operation and returning the result to the stack. This session delves into the intricacies of bytecode arithmetic, shedding light on its nuances, behavior, and impact on program execution.

The arithmetic operations in bytecode are subdivided into two major categories: those involving floating point numbers and those dealing with integers. Each category exhibits distinct behaviors, and understanding these differences is crucial for Java developers seeking precision and reliability in their numerical computations.

As we navigate the bytecode...