How To Populate XMLGregorianCalendar()

I need to populate a JAX Bean from XML, however there is no setter method. I get the following message below

 Failed to invoke public javax.xml.datatype.XMLGregorianCalendar() with no args

I wrote the following methods to take a date and transform it to XMLGregorianCalendar, and then call a setter in my wrapper class. However I still get the exception. Is there a standard way of handling this data type that I am overlooking? Maybe my wrapper class is not calling it, but Netbeans won't allow me to attach a debugger to it for some reason.

public XMLGregorianCalendar asXMLGregorianCalendar(java.util.Date date) throws DatatypeConfigurationException {
    DatatypeFactory datatypeFactory = DatatypeFactory.newInstance();
    if (date == null) {
        return null;
    } else {
        GregorianCalendar gc = new GregorianCalendar();
        gc.setTimeInMillis(date.getTime());
        return datatypeFactory.newXMLGregorianCalendar(gc);
    }
}

The setter in the Bean is below

public void setDeliveryDate(XMLGregorianCalendar value) {
    this.deliveryDate = value;
}