Commonly Used JAXB 2 Annotations

In JAXB2, annotations are used both in generated Java content classes and in Java classes as input to generate schema definitions.

These binding annotations are defined in the javax.xml.bind.annotation package.

Below are some of the more commonly used annotations defined in the javax.xml.bind.annotation package.

  1. XmlAccessorType

    • Specifies the default serialization of fields and properties

    • Annotation Elements

      • AccessType.PUBLIC_MEMBER maps only public fields and JavaBean properties. AccessType.FIELDS maps only fields. AccessType.PROPERTIES maps only JavaBeans properties. AccessType.NONE maps neither fields nor properties.

  2. XmlAttribute

    • Maps a JavaBean property to an attribute

    • Annotation Elements

      • name: Attribute name. namespace: Attribute namespace. required: Specifies whether attribute is required; the default is false.

  3. XmlElement

    • Maps a JavaBean property to an element

    • Annotation Elements

      • defaultValue: The default value of element. name: The element name. namespace: Target namespace of element. nillable: Specifies whether element is nillable; the default is false. type: Element type.

  4. XmlEnum

    • Maps an enum to a simple type with enumeration

    • Annotation Elements

      • value: Enumeration value

  5. XmlList

    • Maps a property to a list simple type

  6. XmlRootElement

    • Maps a class to root element

    • Annotation Elements

      • name: Local name of root element. namespace: Namespace of root element.

  7. XmlSchema

    • Maps a package name to a XML namespace

    • Annotation Elements

      • attributeFormDefault: Specifies the value of the attributeFormDefault attribute. elementFormDefault: Specifies the value of the attribute elementFormDefault. namespace: XML namespace. xmlns: Maps namespace prefixes to namespace URIs.

  8. XmlType

    • Maps a class to an XML Schema type, which may be a simple type or a complex type

    • Annotation Elements

      • name: Target namespace of the XML Schema type. propOrder: Specifies the order of XML schema elements when a class is mapped to a complex type.

  9. XmlValue

    • Maps a class to an XML Schema complex type with simpleContent or an XML Schema simple type

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