Understanding JAXB @XmlRootElement annotation

I recommend using the package level @XmlSchema annotation to specify the namespace qualification for you model. A package level annotation goes in a special class called package-info that contains the exact content as shown below. That annotation will mean that all elements in your document without an explicit namespace given will use that namespace.

org/example/foo/package-info.java

@XmlSchema(    namespace = "http://www.example.org/foo",    elementFormDefault = XmlNsForm.QUALIFIED)package org.example.foo;import javax.xml.bind.annotation.XmlNsForm;import javax.xml.bind.annotation.XmlSchema;

Overriding the Namespace

• You can override the namespace given in the @XmlSchema for all properties in a class using the @XmlType annotation.
• You can override the namespace for a given element using the namespace property on the @XmlRootElement or @XmlElement annotation.

For More Information

• http://blog.bdoughan.com/2010/08/jaxb-namespaces.html
• http://blog.bdoughan.com/2012/07/jaxb-and-root-elements.html

• @XmlRootElement annotation can be used to map a class or enum type to XML type.

• When a top level class or an enum type is annotated with the @XmlRootElement annotation, then its value is represented as XML element in an XML document.

• Follow the example given below to get more idea:

Associate an element with XML Schema type

// Example: Code fragment @XmlRootElement class Point {    int x;    int y;    Point(int _x,int _y) {x=_x;y=_y;} } //Example: Code fragment corresponding to XML output marshal( new Point(3,5), System.out); <!-- Example: XML output --> <point>   <x> 3 </x>   <y> 5 </y> </point>