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nashorn's Issues

Does not run

Hello,

Could you please help with the following issue - how exactly am I supposed to use Nashorn from Java 7?

I have the following simple code:

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

public class Nashorn {
    public static void main(String[] args) {
        ScriptEngineManager manager = new ScriptEngineManager ();
        List<ScriptEngineFactory> factories = manager.getEngineFactories();

        for (ScriptEngineFactory factory : factories) {
            System.out.println(factory.getEngineName());
        }

        ScriptEngine engine = manager.getEngineByName ("nashorn");
        String script = "print ('www.java2s.com')";
        try {
            engine.eval (script);
        } catch (ScriptException e) {
            e.printStackTrace();
        }
    }
}

I compile it:
$ javac Nashorn.java

and then I run it:
$ java -cp nashorn-1.0.jar:. Nashorn

nashorn-1.0.jar is in the current folder.

However, there is exception:
Exception in thread "main" java.lang.NullPointerException
at Nashorn.main(Nashorn.java:18)
This means the "engine" is null. And yes, I have only "Mozilla Rhino" registered, but not Nashorn. Where is the mistake, please?

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