(Java) Java Scripting Programmer's Guide

http://docs.oracle.com/javase/7/docs/technotes/guides/scripting/programmer_guide/index.html#helloworld

 

Embed JavaScript in Java.

 

import javax.script.*;
public class EvalScript {
    public static void main(String[] args) throws Exception {
        // create a script engine manager
        ScriptEngineManager factory = new ScriptEngineManager();
        // create a JavaScript engine
        ScriptEngine engine = factory.getEngineByName("JavaScript");
        // evaluate JavaScript code from String
        engine.eval("print('Hello, World')");
    }
}