JVM Tutorials - Herong's Tutorial Examples

∟JVM (Java Virtual Machine) Specification

This chapter provides tutorial notes and example codes on JVM (Java Virtual Machine) Specification. Topics include introduction of JVM specification; JVM architecture and components; JVM implementations.

What Is JVM (Java Virtual Machine)

What Is JVM Specification

JVM Architectures and Components

Implementations of JVM Specification

Takeaways:

• The JVM (Java Virtual Machine) is an abstract computing machine that can execute a program written in its machine instruction set, called bytecode.
• The JVM specification provides detailed requirements for JVM implementations.
• The reference implementation of JVM is called HotSpot supported by Oracle.

Table of Contents

 About This Book

►JVM (Java Virtual Machine) Specification

 Java HotSpot VM - JVM by Oracle/Sun

 java.lang.Runtime Class - The JVM Instance

 java.lang.System Class - The Operating System

 ClassLoader Class - Class Loaders

 Class Class - Class Reflections

 JVM Runtime Data Areas

 JVM Stack, Frame and Stack Overflow

 Thread Testing Program and Result

 CPU Impact of Multi-Thread Applications

 I/O Impact of Multi-Thread Applications

 CDS (Class Data Sharing)

 Micro Benchmark Runner and JVM Options

 Micro Benchmark Tests on "int" Operations

 Micro Benchmark Tests on "long" Operations

 Micro Benchmark Tests in JIT Compilation Mode

 Micro Benchmark Tests on "float" and "double" Operations

 OpenJ9 by Eclipse Foundation

 JRockit JVM 28.2.7 by Oracle Corporation

 Archived Tutorials

 References

 Full Version in PDF/EPUB

JVM (Java Virtual Machine) Specification - Updated in 2022, by Dr. Herong Yang