Would like to use the ScriptEngineManager in Netbeans

I have written this code in Netbeans and it fails miserably. It is valid code. The purpose is to use Ruby commands in a Java environment.
import javax.script.ScriptEngine; import javax.script.ScriptEngineManager; import javax.script.ScriptException; public class Stream_Listeners { public void test1() throws Exception { ScriptEngineManager factory = new ScriptEngineManager(); ScriptEngine engine = factory.getEngineByName("jruby"); try { engine.eval("print('Hello')"); } catch (ScriptException exception) { exception.printStackTrace(); } } }
It is failing on the ninth line. I assume that netbeans is not seeing my scriptengine directory. I downloaded it and unzipped it but I don't know how to point Netbeans to it. Does anyone have any suggestions?

Nevermind. I had my libraries mixed up for JRuby. It is the next code that is really the problem. Once the object is made, how do I use the method inside?
import java.io.BufferedReader; import java.io.File; import java.io.FileReader; import javax.script.ScriptEngine; import javax.script.ScriptEngineManager; import javax.script.ScriptException; public class Stream_Listeners { public Stream_Listeners() throws Exception { ScriptEngineManager factory = new ScriptEngineManager(); ScriptEngine engine = factory.getEngineByName("jruby"); File file = new File("C:\\Documents and Settings\\jacobenn\\My Documents\\NetBeansProjects\\JavaSwingGUITest\\src\\test_method.rb"); BufferedReader br = new BufferedReader(new FileReader(file)); try { engine.eval(br); } catch (ScriptException exception) { exception.printStackTrace(); } } }
The code inside the File is:
module New class Test_One def initialize() @test_string = 'Hello' puts(test_string) end end end