import org.graalvm.polyglot.Context; try (Context context = Context.create()) { context.eval("js", "console.log('Hello from GraalJS!')"); }

Use artifactId js-community instead of js if you want to use GraalJS built on GraalVM Community Edition. Go step-by-step to create a Maven project, embedding JavaScript in Java, and run it. This example application was tested with GraalVM for JDK 25 and the GraalVM Polyglot API version 25.1.3.

We provide example projects running GraalJS embedded in Java on JDK 21 (or later) and using the Graal compiler: Polyglot Embedding Demo. Maven and Gradle projects for a simple JavaScript “Hello World” application.

Also, the GraalVM Community Edition version has -community in the name, for example, graaljs-community-<version>-<os>-<arch>.tar.gz. Four different configurations are available for each component and platform combination: ... To install GraalJS from a standalone, download and extract the archive from the GitHub Releases page. After the installation, the js or node executable in the bin subdirectory can be used to run JavaScript ...

The source code unit can be represented with a String, as in the example, a file, read from URL, and other means. ... This way you can evaluate JavaScript context embedded in Java, but you will not be able to call a function and set parameters ...

May 22, 2024 - An example project how to run Graal/JavaScript on JDK 11 with Graal as optimizing JIT compiler for best performance. - graalvm/graal-js-jdk11-maven-demo

The source code unit can be represented with a String, as in the example, a file, read from URL, and other means. ... This way you can evaluate JavaScript context embedded in Java, but you will not be able to call a function and set parameters ...

Therefore, any ECMAScript module should have file name extension .mjs. Alternatively, the module Source should have MIME type "application/javascript+module". As an example, let’s assume that you have a file named foo.mjs containing the following simple ES module:

January 16, 2025 - GraalVM JavaScript is open source and regularly pushed to Maven Central Repository by the community. You can find it as package org.graalvm.js. There is an example Maven project for GraalVM JavaScript on JDK11 (or later) using the GraalVM compiler at graal-js-jdk11-maven-demo.

Java code can access such objects like normal Value objects, with the possibility to register new promise resolution functions using the Promise’s default then() and catch() functions. As an example, the following Java code registers a Java callback to be executed when a JavaScript promise resolves:

It enables the Oracle GraalVM JavaScript runtime by default. Use js-community if you need the artifact built on top of GraalVM Community Edition. To access Java from JavaScript, use Java.type, as in the following example:

GraalVM JavaScript loads ECMAScript modules based on their file extension. Therefore, any ECMAScript module should have file name extension .mjs. Alternatively, the module Source should have Mime type "application/javascript+module". As an example, let’s assume that you have a file named foo.mjs containing the following simple ES module:

GraalVM JavaScript loads ECMAScript modules based on their file extension. Therefore, any ECMAScript module should have file name extension .mjs. Alternatively, the module Source should have Mime type "application/javascript+module". As an example, let’s assume that you have a file named foo.mjs containing the following simple ES module:

July 9, 2020 - At runtime, GraalVM will delegate ... this means that the JavaScript promise will either resolve or reject the interopPromise object depending on the result of the Java computeSomething() method call....

October 17, 2023 - The following example uses GraalVM Community Edition version 20.0.2; it should be set up as the JVM in the context (IDE or $PATH). Since the runtime environment for JavaScript is not installed by default, it must first be installed using the GraalVM Updater: