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Javet

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

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Install / Use

/learn @caoccao/Javet
About this skill

Quality Score

0/100

Supported Platforms

Universal

README

Javet

|Maven Central| |Discord| |Donate|

|Linux x86_64 Build| |MacOS x86_64 Build| |MacOS arm64 Build| |Windows x86_64 Build| |Android Node Build| |Android V8 Build|

.. |Maven Central| image:: https://img.shields.io/maven-central/v/com.caoccao.javet/javet?style=for-the-badge :target: https://central.sonatype.com/search?q=g:com.caoccao.javet

.. |Discord| image:: https://img.shields.io/discord/870518906115211305?label=join%20our%20Discord&style=for-the-badge :target: https://discord.gg/R4vvKU96gw

.. |Donate| image:: https://img.shields.io/badge/Donate-green?style=for-the-badge :target: https://opencollective.com/javet

.. |Linux x86_64 Build| image:: https://github.com/caoccao/Javet/actions/workflows/linux_x86_64_build.yml/badge.svg :target: https://github.com/caoccao/Javet/actions/workflows/linux_x86_64_build.yml

.. |MacOS x86_64 Build| image:: https://github.com/caoccao/Javet/actions/workflows/macos_x86_64_build.yml/badge.svg :target: https://github.com/caoccao/Javet/actions/workflows/macos_x86_64_build.yml

.. |MacOS arm64 Build| image:: https://github.com/caoccao/Javet/actions/workflows/macos_arm64_build.yml/badge.svg :target: https://github.com/caoccao/Javet/actions/workflows/macos_arm64_build.yml

.. |Windows x86_64 Build| image:: https://github.com/caoccao/Javet/actions/workflows/windows_x86_64_build.yml/badge.svg :target: https://github.com/caoccao/Javet/actions/workflows/windows_x86_64_build.yml

.. |Android Node Build| image:: https://github.com/caoccao/Javet/actions/workflows/android_node_build.yml/badge.svg :target: https://github.com/caoccao/Javet/actions/workflows/android_node_build.yml

.. |Android V8 Build| image:: https://github.com/caoccao/Javet/actions/workflows/android_v8_build.yml/badge.svg :target: https://github.com/caoccao/Javet/actions/workflows/android_v8_build.yml

Javet <https://github.com/caoccao/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 <https://twitter.com/sjtucaocao>, or visit https://blog.caoccao.com/ or https://caoccao.blogspot.com/. And the official support channel is at discord <https://discord.gg/R4vvKU96gw>.

💖 If you like my work, please donate <https://opencollective.com/javet>_ to support me. By the way, I'm no longer able to renew my JetBrains open-source license with this project. Thank you for supporting Javet.

Major Features

=========== ======= ======= ======= ======= CPU Arch Android Linux MacOS Windows =========== ======= ======= ======= ======= x86 ✔️ ❌ ❌ ❌ x86_64 ✔️ ✔️ ✔️ ✔️ arm ✔️ ❌ ❌ ❌ arm64 ✔️ ✔️ ✔️ ❌ =========== ======= ======= ======= =======

  • Node.js v24.14.0 + V8 v14.6.202.8
  • i18n and non-i18n
  • Dynamic switch between Node.js and V8 mode
  • Polyfill V8 mode with Javenode <https://github.com/caoccao/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
  • AST analysis with swc4j <https://github.com/caoccao/swc4j>_
  • JS, TS, JSX, TSX transformation and transpilation with swc4j <https://github.com/caoccao/swc4j>_
  • Enhance JVM via Byte-code with JavetBuddy <https://github.com/caoccao/JavetBuddy>_
  • Live interaction with JavetShell <https://github.com/caoccao/JavetShell>_

Quick Start

Dependency

Maven ^^^^^

.. code-block:: xml

<!-- Core (Must-have) -->
<dependency>
    <groupId>com.caoccao.javet</groupId>
    <artifactId>javet</artifactId>
    <version>5.0.5</version>
</dependency>

<!-- Node.js Linux (x86_64) -->
<dependency>
    <groupId>com.caoccao.javet</groupId>
    <artifactId>javet-node-linux-x86_64</artifactId>
    <version>5.0.5</version>
</dependency>

<!-- Node.js Linux (arm64) -->
<dependency>
    <groupId>com.caoccao.javet</groupId>
    <artifactId>javet-node-linux-arm64</artifactId>
    <version>5.0.5</version>
</dependency>

<!-- Node.js Mac OS (x86_64) -->
<dependency>
    <groupId>com.caoccao.javet</groupId>
    <artifactId>javet-node-macos-x86_64</artifactId>
    <version>5.0.5</version>
</dependency>

<!-- Node.js Mac OS (arm64) -->
<dependency>
    <groupId>com.caoccao.javet</groupId>
    <artifactId>javet-node-macos-arm64</artifactId>
    <version>5.0.5</version>
</dependency>

<!-- Node.js Windows (x86_64) -->
<dependency>
    <groupId>com.caoccao.javet</groupId>
    <artifactId>javet-node-windows-x86_64</artifactId>
    <version>5.0.5</version>
</dependency>

<!-- V8 Linux (x86_64) -->
<dependency>
    <groupId>com.caoccao.javet</groupId>
    <artifactId>javet-v8-linux-x86_64</artifactId>
    <version>5.0.5</version>
</dependency>

<!-- V8 Linux (arm64) -->
<dependency>
    <groupId>com.caoccao.javet</groupId>
    <artifactId>javet-v8-linux-arm64</artifactId>
    <version>5.0.5</version>
</dependency>

<!-- V8 Mac OS (x86_64) -->
<dependency>
    <groupId>com.caoccao.javet</groupId>
    <artifactId>javet-v8-macos-x86_64</artifactId>
    <version>5.0.5</version>
</dependency>

<!-- V8 Mac OS (arm64) -->
<dependency>
    <groupId>com.caoccao.javet</groupId>
    <artifactId>javet-v8-macos-arm64</artifactId>
    <version>5.0.5</version>
</dependency>

<!-- V8 Windows (x86_64) -->
<dependency>
    <groupId>com.caoccao.javet</groupId>
    <artifactId>javet-v8-windows-x86_64</artifactId>
    <version>5.0.5</version>
</dependency>

Gradle Kotlin DSL ^^^^^^^^^^^^^^^^^

.. code-block:: kotlin

implementation("com.caoccao.javet:javet:5.0.5") // Core (Must-have)
implementation("com.caoccao.javet:javet-node-linux-arm64:5.0.5")
implementation("com.caoccao.javet:javet-node-linux-x86_64:5.0.5")
implementation("com.caoccao.javet:javet-node-macos-arm64:5.0.5")
implementation("com.caoccao.javet:javet-node-macos-x86_64:5.0.5")
implementation("com.caoccao.javet:javet-node-windows-x86_64:5.0.5")
implementation("com.caoccao.javet:javet-v8-linux-arm64:5.0.5")
implementation("com.caoccao.javet:javet-v8-linux-x86_64:5.0.5")
implementation("com.caoccao.javet:javet-v8-macos-arm64:5.0.5")
implementation("com.caoccao.javet:javet-v8-macos-x86_64:5.0.5")
implementation("com.caoccao.javet:javet-v8-windows-x86_64:5.0.5")

Gradle Groovy DSL ^^^^^^^^^^^^^^^^^

.. code-block:: groovy

implementation 'com.caoccao.javet:javet:5.0.5' // Core (Must-have)
implementation 'com.caoccao.javet:javet-node-linux-arm64:5.0.5'
implementation 'com.caoccao.javet:javet-node-linux-x86_64:5.0.5'
implementation 'com.caoccao.javet:javet-node-macos-arm64:5.0.5'
implementation 'com.caoccao.javet:javet-node-macos-x86_64:5.0.5'
implementation 'com.caoccao.javet:javet-node-windows-x86_64:5.0.5'
implementation 'com.caoccao.javet:javet-v8-linux-arm64:5.0.5'
implementation 'com.caoccao.javet:javet-v8-linux-x86_64:5.0.5'
implementation 'com.caoccao.javet:javet-v8-macos-arm64:5.0.5'
implementation 'com.caoccao.javet:javet-v8-macos-x86_64:5.0.5'
implementation 'com.caoccao.javet:javet-v8-windows-x86_64:5.0.5'

For more detail, please visit the installation <https://www.caoccao.com/Javet/tutorial/basic/installation.html>_ page.

Hello Javet

.. code-block:: java

// 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());
}

Sponsors

HiveMQ <https://www.hivemq.com/>_ | SheetJS <https://www.sheetjs.com/>_ | momen.app <https://momen.app/>_

License

APACHE LICENSE, VERSION 2.0 <https://github.com/caoccao/Javet/blob/main/LICENSE>_

Blog

  • Performance Comparison of GraalJS, Javet and Nashorn <https://blog.caoccao.com/performance-comparison-of-graaljs-javet-and-nashorn-7bae6925826a>_
  • How to Elegantly Expose JsonNode in V8 <https://blog.caoccao.com/how-to-elegantly-expose-jsonnode-in-v8-638aff9da549>_
  • How to Compromise V8 on JVM <https://blog.caoccao.com/how-to-compromise-v8-on-jvm-ceb385572461>_
  • Is TypeScript a Good Choice for a Script Engine? <https://blog.caoccao.com/is-typescript-a-good-choice-for-a-script-engine-01fe69921ace>_
  • Run TypeScript Directly in Java <https://blog.caoccao.com/run-typescript-directly-in-java-82b7003b44b8>_
  • SSR — React + Spring Boot with Javet <https://blog.caoccao.com/ssr-react-spring-boot-with-javet-536282ff0edb>_

Documents

  • Javet Intro <https://docs.google.com/presentation/d/1lQ8xIHuywuE0ydqm2w6xq8OeQZO_WeTLYXW9bNflQb8/>_
  • Javet Javadoc <https://www.caoccao.com/Javet/reference/javadoc/index.html>_
  • Javet Document Portal <https://www.caoccao.com/Javet/>_

caoccao

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GitHub Stars942
CategoryDevelopment
Updated1d ago
Forks98
caoccao/Javet

Languages

Java

Security Score

100/100

Audited on Mar 31, 2026

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