JAXB @XmlAccessorType to cinfigure field or property access.

1.@XmlAccessorType(XmlAccessType.PUBLIC_MEMBER)
Causes jaxb implementation to create binding for fields,annotated fields and property.
2.@XmlAccessorType(XmlAccessType.PROPERTY)
Causes Jaxb implementations to create bindings for property and annotated fields.
3.@XmlAccessorType(XmlAccessType.FIELD)
cause JAXB implementations to create bindings for fields and annotated property only

http://blog.bdoughan.com/2011/06/using-jaxbs-xmlaccessortype-to.html

@XmlType(propOrder={"ID", "firstName", "lastName"})