If you are facing ClassCastException while unmarshaling XML using JAXB, it might be happening because unmarshalling is returning JAXBElement object.

Use below solution if JAXB unmarshaling returns JAXBElement.


JAXBContext jaxbContext = JAXBContext.newInstance("com.test.messaging");
 
Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();

JAXBElement jaxbResponse  =  (JAXBElement)jaxbUnmarshaller.unmarshal(file);

MessageType message = (MessageType )jaxbResponse.getValue();