JAXBIntrospector (Jakarta EE Platform API)

java.lang.Object
- jakarta.xml.bind.JAXBIntrospector

```
public abstract class JAXBIntrospector
extends Object
```
Provide access to Jakarta XML Binding xml binding data for a Jakarta XML Binding object.
Initially, the intent of this class is to just conceptualize how a Jakarta XML Binding application developer can access xml binding information, independent if binding model is java to schema or schema to java. Since accessing the XML element name related to a Jakarta XML Binding element is a highly requested feature, demonstrate access to this binding information. The factory method to get a JAXBIntrospector instance is JAXBContext.createJAXBIntrospector().

Since:

1.6, JAXB 2.0

See Also:

JAXBContext.createJAXBIntrospector()

Constructor Summary

Constructors
Modifier Constructor Description

protected JAXBIntrospector()
Do-nothing constructor for the derived classes.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract QName`	`getElementName(Object jaxbElement)`	Get xml element qname for `jaxbElement`.
`static Object`	`getValue(Object jaxbElement)`	Get the element value of a Jakarta XML Binding element.
`abstract boolean`	`isElement(Object object)`	Return true if `object` represents a Jakarta XML Binding element.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - JAXBIntrospector
```
protected JAXBIntrospector()
```
    Do-nothing constructor for the derived classes.
- Method Detail
  - isElement
```
public abstract boolean isElement(Object object)
```
    Return true if object represents a Jakarta XML Binding element.
    
    Parameter object is a Jakarta XML Binding element for following cases:
    
    It is an instance of jakarta.xml.bind.JAXBElement.
    
    The class of object is annotated with @XmlRootElement.
    See Also:
    
    getElementName(Object)
  - getElementName
```
public abstract QName getElementName(Object jaxbElement)
```
    Get xml element qname for jaxbElement.
    
    Parameters:
    
    jaxbElement - is an object that isElement(Object) returned true.
    
    Returns:
    
    xml element qname associated with jaxbElement; null if jaxbElement is not a JAXBElement.
  - getValue
```
public static Object getValue(Object jaxbElement)
```
    Get the element value of a Jakarta XML Binding element.
    
    Convenience method to abstract whether working with either a jakarta.xml.bind.JAXBElement instance or an instance of @XmlRootElement annotated Java class.
    
    Parameters:
    
    jaxbElement - object that #isElement(Object) returns true.
    
    Returns:
    
    The element value of the jaxbElement.