Rhino Example to Execute a Javascript File - Run the following command: "java JavaScriptExecuter test.js"

JavaScriptExecuter.java

import java.io.FileReader;
import java.io.Reader;
import javax.script.Invocable;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
 
public class JavaScriptExecuter {

    public static void main(String[] args) throws FileNotFoundException, ScriptException, NoSuchMethodException {
        if (args.length == 0) {
            System.out.println("Missing File Name as an Argument");
            System.exit(0);
        }

        ScriptEngine engine = new ScriptEngineManager().getEngineByName("javascript");
        engine.put("engine", engine);
        engine.eval(new FileReader(args[0]));
    }
 
}

test.js

var foo = 1,
    bar = 2,
    baz = foo + bar,
    qux;

function translate (a, b, c) {
    return a + b * c;
}

qux = translate(foo, bar, baz);

print('And the answer is...' + qux + '!');