@XmlRootElement public class Person { @XmlElement private String name; @XmlElement private int age; } JAXBContext jaxbContext = JAXBContext.newInstance(Person.class); Marshaller marshaller = jaxbContext.createMarshaller(); Unmarshaller unmarshaller = jaxbContext.createUnmarshaller(); marshaller.marshal(person, file); Person person = (Person) unmarshaller.unmarshal(file);