Using Rhino JSR-223 engine with JDK8

TL;DR

You will find prebuilt js.jar and js-engine.jar in the release tab. You can put these two jars in your CLASSPATH. When creating script engine in your app, you need to use "rhino" as engine name.

Using Rhino jsr-223 engine from Java

import javax.script.*;
 
public class Main {
    public static void main(String[] args) throws Exception {
        ScriptEngineManager m = new ScriptEngineManager();
        // specifically look for "rhino" engine
        ScriptEngine engine = m.getEngineByName("rhino");
        System.out.println(engine.eval("33 + 232"));
    }
}

compile above using

javac Main.java

run it using

java -cp js-engine.jar:js.jar Main

About using Rhino JSR-223 engine with JDK8

Cited by Andreas Haufler

Java 8 brings Nashorn as new JavaScript implementation for JSR 223 (javax.scripting). While this is certainly great news (Nashorn is way faster than Rhino by directly generating Java code), it comes with some challenges:

Nashorn is not 100% compatible with Rhino.

Rhino had some extensions and more or less other interpretations on how to combine the Java world with JavaScript. Therefore you cannot simply replace Rhino by Nashorn. One case (which ruined our day) is that you cannot call static methods on instances. Therefore we had to get Rhino up and running in Java 8 until we have our scripts re-written.

A post from openjdk.java

About javax-scripting

When you go to java.net to get scripting project, you will find it closed. However, there are some mirror on github and this project forked on https://github.com/scijava/javax-scripting
This fork is a mod to build JSR-223 engine with JDK8 guided by the post on openjdk.java.net

rhino engine from mozilla

https://developer.mozilla.org/en-US/docs/Mozilla/Projects/Rhino

build

0. Prerequisites: need jdk and ant installed
1. Move to PROJECT_DIR/engines/javascript-jdk8-rhino/make and run: ant
2. Binaries will be placed on PROJECT_DIR/engines/javascript-jdk8-rhino/build
3. Choosing rhino version:
   It was configurated to download rhino from maven with ivy under PROJECT_DIR/engines/javascript-jdk8-rhino/make/ivy.xml

<dependency org="org.mozilla" name="rhino" rev="1.7R4"/>

• Rhino bundled with JDK7 has version 1.7R3: link

<dependency org="org.mozilla" name="rhino" rev="1.7R3"/>

• Rhino bundled with JDK6 has version 1.6R2

<dependency org="rhino" name="rhino" rev="1.6R2"/>