How to embed V8 in a Java application?

Question

I'm looking for a solution for embedding the Google JavaScript engine V8 in my Java application.

Have you got some solutions?

Answer 1

You can use J2V8 https://github.com/eclipsesource/J2V8. It's even available in Maven Central.

Below is a Hello, World! program using J2V8.

package com.example;

import com.eclipsesource.v8.V8;

public class EclipseCon_snippet5 {


    public static class Printer {
        public void print(String string) {
            System.out.println(string);
        }
    }

    public static void main(String[] args) {
        V8 v8 = V8.createV8Runtime();
        v8.registerJavaMethod(new Printer(), "print", "print", new Class<?>[]{String.class});
        v8.executeVoidScript( "print('Hello, World!');" );
        v8.release(true);
    }

}

You will need to specify your platform in your pom.xml. J2V8 currently supports win32_x86, macosx_x86_64, android_x86 and android_armv7l. The reason they are different is because of the native bindings and pre-build version of V8 that is bundled.

For example, on MacOS you can use.

<dependencies>
    <dependency>
        <groupId>com.eclipsesource.j2v8</groupId>
        <artifactId>j2v8_macosx_x86_64</artifactId>
        <version>2.0</version>
        <scope>compile</scope>
    </dependency>
</dependencies>