import java.io.*;
import java.util.*;
import javax.script.*;

public class Jtest3{

    public static void main(String[] args){
        ScriptEngineManager factory = new ScriptEngineManager();
        ScriptEngine js = factory.getEngineByName("JavaScript");
        Object obj = js.get("toString");
        System.out.printf("%s\n",obj);
    }

/*

output rhino:
null

output nashorn:
function toString() { [native code] }

*/

}