NotationDeclaration (Java SE 26 & JDK 26)
Description: declaration: module: java.xml, package: javax.xml.stream.events, interface: NotationDeclaration
Keywords: javax.xml.stream.events.NotationDeclaration interface

# Interface NotationDeclaration

All Superinterfaces:
  `XMLEvent, XMLStreamConstants`

public interface NotationDeclaration extends XMLEvent
An interface for handling Notation Declarations Receive notification of a notation declaration event. It is up to the application to record the notation for later reference, At least one of publicId and systemId must be non-null. There is no guarantee that the notation declaration will be reported before any unparsed entities that use it.

Since:
  1.6

- ## Field Summary

  ### Fields declared in interface XMLStreamConstants

  `ATTRIBUTE, CDATA, CHARACTERS, COMMENT, DTD, END_DOCUMENT, END_ELEMENT, ENTITY_DECLARATION, ENTITY_REFERENCE, NAMESPACE, NOTATION_DECLARATION, PROCESSING_INSTRUCTION, SPACE, START_DOCUMENT, START_ELEMENT`
  Modifier and Type
  Field
  Description
  `static final int`
  `ATTRIBUTE`
  Indicates an event is an attribute
  `static final int`
  `CDATA`
  Indicates an event is a CDATA section
  `static final int`
  `CHARACTERS`
  Indicates an event is characters
  `static final int`
  `COMMENT`
  Indicates an event is a comment
  `static final int`
  `DTD`
  Indicates an event is a DTD
  `static final int`
  `END_DOCUMENT`
  Indicates an event is an end document
  `static final int`
  `END_ELEMENT`
  Indicates an event is an end element
  `static final int`
  `ENTITY_DECLARATION`
  Indicates a Entity Declaration
  `static final int`
  `ENTITY_REFERENCE`
  Indicates an event is an entity reference
  `static final int`
  `NAMESPACE`
  Indicates the event is a namespace declaration
  `static final int`
  `NOTATION_DECLARATION`
  Indicates a Notation
  `static final int`
  `PROCESSING_INSTRUCTION`
  Indicates an event is a processing instruction
  `static final int`
  `SPACE`
  The characters are white space (see [XML], 2.10 "White Space Handling").
  `static final int`
  `START_DOCUMENT`
  Indicates an event is a start document
  `static final int`
  `START_ELEMENT`
  Indicates an event is a start element

- ## Method Summary

  Modifier and Type
  Method
  Description
  `String`
  `getName()`
  The notation name.
  `String`
  `getPublicId()`
  The notation's public identifier, or null if none was given.
  `String`
  `getSystemId()`
  The notation's system identifier, or null if none was given.

  ### Methods declared in interface XMLEvent

  `asCharacters, asEndElement, asStartElement, getEventType, getLocation, getSchemaType, isAttribute, isCharacters, isEndDocument, isEndElement, isEntityReference, isNamespace, isProcessingInstruction, isStartDocument, isStartElement, writeAsEncodedUnicode`
  Modifier and Type
  Method
  Description
  `Characters`
  `asCharacters()`
  Returns this event as Characters, may result in a class cast exception if this event is not Characters.
  `EndElement`
  `asEndElement()`
  Returns this event as an end element event, may result in a class cast exception if this event is not a end element.
  `StartElement`
  `asStartElement()`
  Returns this event as a start element event, may result in a class cast exception if this event is not a start element.
  `int`
  `getEventType()`
  Returns an integer code for this event.
  `Location`
  `getLocation()`
  Return the location of this event.
  `QName`
  `getSchemaType()`
  This method is provided for implementations to provide optional type information about the associated event.
  `boolean`
  `isAttribute()`
  A utility function to check if this event is an Attribute.
  `boolean`
  `isCharacters()`
  A utility function to check if this event is Characters.
  `boolean`
  `isEndDocument()`
  A utility function to check if this event is an EndDocument.
  `boolean`
  `isEndElement()`
  A utility function to check if this event is a EndElement.
  `boolean`
  `isEntityReference()`
  A utility function to check if this event is an EntityReference.
  `boolean`
  `isNamespace()`
  A utility function to check if this event is a Namespace.
  `boolean`
  `isProcessingInstruction()`
  A utility function to check if this event is a ProcessingInstruction.
  `boolean`
  `isStartDocument()`
  A utility function to check if this event is a StartDocument.
  `boolean`
  `isStartElement()`
  A utility function to check if this event is a StartElement.
  `void`
  `writeAsEncodedUnicode(Writer writer)`
  This method will write the XMLEvent as per the XML 1.0 specification as Unicode characters.

- ## Method Details

  - ### getName

    String getName()
    The notation name.
    Returns:
      the notation name

  - ### getPublicId

    String getPublicId()
    The notation's public identifier, or null if none was given.
    Returns:
      the public identifier

  - ### getSystemId

    String getSystemId()
    The notation's system identifier, or null if none was given.
    Returns:
      the system identifier