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jvm.go

A JVM written in Go. jvm.go Logo

Introduction

jvm.go is a new JVM (which is far from complete) programmed in Go. The main purpose of this project is learning Go and the JVM. So the number one goal of the project is readability of code. The basic idea is to just implement the core JVM, and use rt.jar (from OpenJDK) as its class library. The garbage collector is implemented by directly using Go’s GC. For me, the hardest part is Thread and ClassLoader.

My dev environment

  • Mac OS X 10.10.2
  • Java 1.8.0_31
  • Go 1.4

Build jvm.go

go get github.com/zxh0/jvm.go/jvmgo

Run jvm.go using your Java installation

Ensure your Java version is 1.8.0_32 and JAVA_HOME env was set

jvmgo -XuseJavaHome -cp path/to/jars:path/to/classes HelloWorld

Run jvm.go using Zulu

Download zulu1.8.0_31-8.5.0.1-macosx.zip (Zulu is a certified build of OpenJDK that is fully compliant with the Java SE standard.) and unzip it to somewhere, Copy jvmgo from $GOPATH/bin/ into unzipped folder

cd path/to/zulu1.8.0_31-8.5.0.1-macosx
jvmgo -cp path/to/jars:path/to/classes HelloWorld