Rhino: JavaScript in Java

Rhino is an implementation of JavaScript in Java.

License

Rhino is licensed under the MPL 2.0.

Release Notes for recent releases.

Compatibility table which shows which advanced JavaScript features from ES6, and ES2016+ are implemented in Rhino.

Information for script builders and embedders:

JavaDoc for all the APIs:

More resources if you get stuck:

Rhino builds with Gradle. Here are some useful tasks:

./gradlew jar

Build and create Rhino jar in the buildGradle/libs directory.

git submodule init
git submodule update
./gradlew test

Build and run all the tests.

./gradlew testBenchmark

Build and run benchmark tests.

Ensure all tests are passing
Remove -SNAPSHOT from version in gradle.properties in project root folder
Create file gradle.properties in $HOME/.gradle folder with following properties. Populate them with maven repo credentials and repo location.

mavenUser=
mavenPassword=
mavenSnapshotRepo=
mavenReleaseRepo=

./gradlew publish

Increase version and add -SNAPSHOT to it in gradle.properties in project root folder.
Push gradle.properties to GitHub

Rhino can run as a stand-alone interpreter from the command line:

java -jar buildGradle/libs/rhino-1.7.12.jar -debug -version 200
Rhino 1.7.9 2018 03 15
js> print('Hello, World!');
Hello, World!
js>

There is also a "rhino" package for many Linux distributions as well as Homebrew for the Mac.

You can also embed it, as most people do. See below for more docs.

Most issues are managed on GitHub:

The Google group is the best place to go with questions: