Java Bytecode Instructions Explained With Real Examples

A practical guide to the most important JVM bytecode instructions — bipush, sipush, ldc, invokestatic, invokevirtual, getfield, putfield — with real disassembly examples.

How the Operand Stack Works

Loading Constants

Loading and Storing Locals

Arithmetic

Method Invocation

Field Access

Branching and Control Flow

Object Creation

Reading Real Disassembly: An Example

Where This Connects to JAR Editing