JAXB com Eclipse

<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
            xmlns:jxb="http://java.sun.com/xml/ns/jaxb"
            jxb:version="2.0">

<xsd:element name="Greetings" type="GreetingListType"/>

<xsd:complexType name="GreetingListType">
  <xsd:sequence>
    <xsd:element name="Greeting" type="GreetingType"
                 maxOccurs="unbounded"/>
  </xsd:sequence>
</xsd:complexType>

<xsd:complexType name="GreetingType">
  <xsd:sequence>
    <xsd:element name="Text" type="xsd:string"/>
  </xsd:sequence>
  <xsd:attribute name="language" type="xsd:language"/>
</xsd:complexType>

</xsd:schema>

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;

import br.com.foxtec.tipos.GreetingListType;
import br.com.foxtec.tipos.GreetingType;
import br.com.foxtec.tipos.ObjectFactory;

public class Hello {

    private ObjectFactory of;
    private GreetingListType grList;

    public Hello(){
        of = new ObjectFactory();
        grList = of.createGreetingListType();
    }

    public void make( String t, String l ){
        GreetingType g = of.createGreetingType();
        g.setText( t );
        g.setLanguage( l );
	grList.getGreeting().add( g );
    }

    public void marshal() {
        try {
            JAXBElement gl =
                of.createGreetings( grList );
	    JAXBContext jc = JAXBContext.newInstance("hello");
	    Marshaller m = jc.createMarshaller();
	    m.marshal( gl, System.out );
	} catch( JAXBException jbe ){
            jbe.printStackTrace();
	}
    }
}

public class Teste {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Hello h = new Hello();
		h.make( "Bonjour, madame", "fr" ); 
		h.make( "Hey, you", "en" ); 
		h.marshal();

	}

}

javax.xml.bind.JAXBException: "hello" doesnt contain ObjectFactory.class or jaxb.index
	at com.sun.xml.internal.bind.v2.ContextFactory.createContext(Unknown Source)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at javax.xml.bind.ContextFinder.newInstance(Unknown Source)
	at javax.xml.bind.ContextFinder.find(Unknown Source)
	at javax.xml.bind.JAXBContext.newInstance(Unknown Source)
	at javax.xml.bind.JAXBContext.newInstance(Unknown Source)
	at javax.xml.bind.JAXBContext.newInstance(Unknown Source)
	at Hello.marshal(Hello.java:31)
	at Teste.main(Teste.java:11)