code.js

print("Enter your name: ")
puts("Hello, " + gets())

Main.java

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;

import org.mozilla.javascript.*;

public class Main {
	static BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
	public static void main(String[] args) throws FileNotFoundException, IOException {
		Context cx = Context.enter();
		try {
			ScriptableObject scope = cx.initStandardObjects();
			String[] functions = { "gets", "puts", "print" };
			scope.defineFunctionProperties(functions, Main.class, ScriptableObject.DONTENUM);
			cx.evaluateReader(scope, new FileReader(args[0]), args[0], 1, null);
		} finally {
			Context.exit();
		}
	}
	public static String gets() throws IOException {
		String line = reader.readLine();
		if (line.endsWith("\r\n")) {
			line = line.substring(0, line.length() - 2);
		} else if (line.endsWith("\n")) {
			line = line.substring(0, line.length() - 1);
		}
		return line;
	}
	public static void puts(String x) {
		System.out.println(x);
	}
	public static void print(String x) {
		System.out.print(x);
	}
}