Javet

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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. If you have a retired Mac OS (x86_64) device and are fine with mailing it to me, that will be great because I don't have such device to support the community. Thank you for supporting Javet.

Major Features

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

Node.js v20.17.0 + V8 v12.9.202.18
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>_
Live interaction with JavetShell <https://github.com/caoccao/JavetShell>_

Quick Start

Dependency

Maven ^^^^^

.. code-block:: xml

<!-- Linux and Windows (x86_64) -->
<dependency>
    <groupId>com.caoccao.javet</groupId>
    <artifactId>javet</artifactId>
    <version>3.1.8</version>
</dependency>

<!-- Linux (arm64) -->
<dependency>
    <groupId>com.caoccao.javet</groupId>
    <artifactId>javet-linux-arm64</artifactId>
    <version>3.1.8</version>
</dependency>

<!-- Mac OS (x86_64 and arm64) -->
<dependency>
    <groupId>com.caoccao.javet</groupId>
    <artifactId>javet-macos</artifactId>
    <version>3.1.8</version>
</dependency>

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

.. code-block:: kotlin

implementation("com.caoccao.javet:javet:3.1.8") // Linux and Windows (x86_64)
implementation("com.caoccao.javet:javet-linux-arm64:3.1.8") // Linux (arm64)
implementation("com.caoccao.javet:javet-macos:3.1.8") // Mac OS (x86_64 and arm64)
implementation("com.caoccao.javet:javet-android-node:3.1.8") // Android Node (arm, arm64, x86 and x86_64)
implementation("com.caoccao.javet:javet-android-v8:3.1.8") // Android V8 (arm, arm64, x86 and x86_64)

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

.. code-block:: groovy

implementation 'com.caoccao.javet:javet:3.1.8' // Linux and Windows (x86_64)
implementation 'com.caoccao.javet:javet-linux-arm64:3.1.8' // Linux (arm64)
implementation 'com.caoccao.javet:javet-macos:3.1.8' // Mac OS (x86_64 and arm64)
implementation 'com.caoccao.javet:javet-android-node:3.1.8' // Android Node (arm, arm64, x86 and x86_64)
implementation 'com.caoccao.javet:javet-android-v8:3.1.8' // Android V8 (arm, arm64, x86 and x86_64)

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());
}

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>_

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 / Javet

readme