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Javet is Java + V8 (JAVa + V + EighT). It is an awesome way of embedding Node.js and V8 in Java.

If you like my work, please Star this project. And, you may follow me @sjtucaocao, or visit http://caoccao.blogspot.com/. And the official support channel is at discord.

💖 If you use Mac OS (x86_64), please be aware that the Mac OS (x86_64) build will discontinue anytime because I'm no longer able to build new versions of V8 with my MacBook Air mid-2012. Please donate to support me purchasing a new Mac OS (x86_64) device. Or, if you have a retired Mac OS (x86_64) device and are fine with mailing it to me, that will also be great. Thank you for supporting Javet.

💖 If you use Mac OS (arm64), I bought an M2 device and now am able to build it.

Major Features

  • Linux (x86_64) + Mac OS (x86_64, arm64) + ️Windows (x86_64)

  • Android (arm, arm64, x86 and x86_64)

  • Node.js v18.16.0 + V8 v11.4.183.14

  • Dynamic switch between Node.js and V8 mode (Which mode do you prefer?)

  • Polyfill V8 mode with Javenode

  • V8 API exposure in JVM

  • JavaScript and Java interop

  • Native BigInt and Date

  • Javet engine pool

  • Easy spring integration

  • Live debug with Chrome DevTools

Quick Start



<!-- Linux and Windows (x86_64) -->

<!-- Mac OS (x86_64 and arm64) -->

Gradle Kotlin DSL

implementation("com.caoccao.javet:javet:2.2.0") // Linux and Windows (x86_64)
implementation("com.caoccao.javet:javet-macos:2.2.0") // Mac OS (x86_64 and arm64)
implementation("com.caoccao.javet:javet-android:2.2.0") // Android (arm, arm64, x86 and x86_64)

Gradle Groovy DSL

implementation 'com.caoccao.javet:javet:2.2.0' // Linux and Windows (x86_64)
implementation 'com.caoccao.javet:javet-macos:2.2.0' // Mac OS (x86_64 and arm64)
implementation 'com.caoccao.javet:javet-android:2.2.0' // Android (arm, arm64, x86 and x86_64)

Hello Javet

// Node.js Mode
try (V8Runtime v8Runtime = V8Host.getNodeInstance().createV8Runtime()) {
    System.out.println(v8Runtime.getExecutor("'Hello Javet'").executeString());

// V8 Mode
try (V8Runtime v8Runtime = V8Host.getV8Instance().createV8Runtime()) {
    System.out.println(v8Runtime.getExecutor("'Hello Javet'").executeString());