org.w3c.dom

## Interface Document

- All Superinterfaces:
    Node
  All Known Subinterfaces:
    HTMLDocument
  All Known Implementing Classes:
    DecimalFormatProperties, DTMNodeProxy, ElemApplyImport, ElemApplyTemplates, ElemAttribute, ElemAttributeSet, ElemCallTemplate, ElemChoose, ElemComment, ElemCopy, ElemCopyOf, ElemElement, ElemEmpty, ElemExsltFuncResult, ElemExsltFunction, ElemExtensionCall, ElemExtensionDecl, ElemExtensionScript, ElemFallback, ElemForEach, ElemIf, ElemLiteralResult, ElemMessage, ElemNumber, ElemOtherwise, ElemParam, ElemPI, ElemSort, ElemTemplate, ElemTemplateElement, ElemText, ElemTextLiteral, ElemUnknown, ElemUse, ElemValueOf, ElemVariable, ElemVariablePsuedo, ElemWhen, ElemWithParam, KeyDeclaration, NamespaceAlias, OutputProperties, ProcessorCharacters, ProcessorExsltFuncResult, ProcessorExsltFunction, ProcessorImport, ProcessorInclude, ProcessorLRE, ProcessorStylesheetDoc, ProcessorStylesheetElement, ProcessorTemplateElem, ProcessorText, ProcessorUnknown, Stylesheet, StylesheetComposed, StylesheetRoot, UnImplNode, WhiteSpaceInfo, WhitespaceInfoPaths, XSLTElementProcessor

      public interface Document
      extends Node

  The `Document` interface represents the entire HTML or XML document. Conceptually, it is the root of the document tree, and provides the primary access to the document's data.

  Since elements, text nodes, comments, processing instructions, etc. cannot exist outside the context of a `Document`, the `Document` interface also contains the factory methods needed to create these objects. The `Node` objects created have a `ownerDocument` attribute which associates them with the `Document` within whose context they were created.

  See also the Document Object Model (DOM) Level 3 Core Specification.

- - ### Field Summary

    - ### Fields inherited from interface org.w3c.dom.Node

      `ATTRIBUTE_NODE, CDATA_SECTION_NODE, COMMENT_NODE, DOCUMENT_FRAGMENT_NODE, DOCUMENT_NODE, DOCUMENT_POSITION_CONTAINED_BY, DOCUMENT_POSITION_CONTAINS, DOCUMENT_POSITION_DISCONNECTED, DOCUMENT_POSITION_FOLLOWING, DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC, DOCUMENT_POSITION_PRECEDING, DOCUMENT_TYPE_NODE, ELEMENT_NODE, ENTITY_NODE, ENTITY_REFERENCE_NODE, NOTATION_NODE, PROCESSING_INSTRUCTION_NODE, TEXT_NODE`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `Node` | `adoptNode(Node source)` Attempts to adopt a node from another document to this document.
    `Attr` | `createAttribute(java.lang.String name)` Creates an `Attr` of the given name.
    `Attr` | `createAttributeNS(java.lang.String namespaceURI, java.lang.String qualifiedName)` Creates an attribute of the given qualified name and namespace URI.
    `CDATASection` | `createCDATASection(java.lang.String data)` Creates a `CDATASection` node whose value is the specified string.
    `Comment` | `createComment(java.lang.String data)` Creates a `Comment` node given the specified string.
    `DocumentFragment` | `createDocumentFragment()` Creates an empty `DocumentFragment` object.
    `Element` | `createElement(java.lang.String tagName)` Creates an element of the type specified.
    `Element` | `createElementNS(java.lang.String namespaceURI, java.lang.String qualifiedName)` Creates an element of the given qualified name and namespace URI.
    `EntityReference` | `createEntityReference(java.lang.String name)` Creates an `EntityReference` object.
    `ProcessingInstruction` | `createProcessingInstruction(java.lang.String target, java.lang.String data)` Creates a `ProcessingInstruction` node given the specified name and data strings.
    `Text` | `createTextNode(java.lang.String data)` Creates a `Text` node given the specified string.
    `DocumentType` | `getDoctype()` The Document Type Declaration (see `DocumentType`) associated with this document.
    `Element` | `getDocumentElement()` This is a convenience attribute that allows direct access to the child node that is the document element of the document.
    `java.lang.String` | `getDocumentURI()` The location of the document or `null` if undefined or if the `Document` was created using `DOMImplementation.createDocument`.
    `DOMConfiguration` | `getDomConfig()` The configuration used when `Document.normalizeDocument()` is invoked.
    `Element` | `getElementById(java.lang.String elementId)` Returns the `Element` that has an ID attribute with the given value.
    `NodeList` | `getElementsByTagName(java.lang.String tagname)` Returns a `NodeList` of all the `Elements` in document order with a given tag name and are contained in the document.
    `NodeList` | `getElementsByTagNameNS(java.lang.String namespaceURI, java.lang.String localName)` Returns a `NodeList` of all the `Elements` with a given local name and namespace URI in document order.
    `DOMImplementation` | `getImplementation()` The `DOMImplementation` object that handles this document.
    `java.lang.String` | `getInputEncoding()` An attribute specifying the encoding used for this document at the time of the parsing.
    `boolean` | `getStrictErrorChecking()` An attribute specifying whether error checking is enforced or not.
    `java.lang.String` | `getXmlEncoding()` An attribute specifying, as part of the XML declaration, the encoding of this document.
    `boolean` | `getXmlStandalone()` An attribute specifying, as part of the XML declaration, whether this document is standalone.
    `java.lang.String` | `getXmlVersion()` An attribute specifying, as part of the XML declaration, the version number of this document.
    `Node` | `importNode(Node importedNode, boolean deep)` Imports a node from another document to this document, without altering or removing the source node from the original document; this method creates a new copy of the source node.
    `void` | `normalizeDocument()` This method acts as if the document was going through a save and load cycle, putting the document in a "normal" form.
    `Node` | `renameNode(Node n, java.lang.String namespaceURI, java.lang.String qualifiedName)` Rename an existing node of type `ELEMENT_NODE` or `ATTRIBUTE_NODE`.
    `void` | `setDocumentURI(java.lang.String documentURI)` The location of the document or `null` if undefined or if the `Document` was created using `DOMImplementation.createDocument`.
    `void` | `setStrictErrorChecking(boolean strictErrorChecking)` An attribute specifying whether error checking is enforced or not.
    `void` | `setXmlStandalone(boolean xmlStandalone)` An attribute specifying, as part of the XML declaration, whether this document is standalone.
    `void` | `setXmlVersion(java.lang.String xmlVersion)` An attribute specifying, as part of the XML declaration, the version number of this document.

    - ### Methods inherited from interface org.w3c.dom.Node

      `appendChild, cloneNode, compareDocumentPosition, getAttributes, getBaseURI, getChildNodes, getFeature, getFirstChild, getLastChild, getLocalName, getNamespaceURI, getNextSibling, getNodeName, getNodeType, getNodeValue, getOwnerDocument, getParentNode, getPrefix, getPreviousSibling, getTextContent, getUserData, hasAttributes, hasChildNodes, insertBefore, isDefaultNamespace, isEqualNode, isSameNode, isSupported, lookupNamespaceURI, lookupPrefix, normalize, removeChild, replaceChild, setNodeValue, setPrefix, setTextContent, setUserData`

- - ### Method Detail

    - #### getDoctype

          DocumentType getDoctype()

      The Document Type Declaration (see `DocumentType`) associated with this document. For XML documents without a document type declaration this returns `null`. For HTML documents, a `DocumentType` object may be returned, independently of the presence or absence of document type declaration in the HTML document.
      This provides direct access to the `DocumentType` node, child node of this `Document`. This node can be set at document creation time and later changed through the use of child nodes manipulation methods, such as `Node.insertBefore`, or `Node.replaceChild`. Note, however, that while some implementations may instantiate different types of `Document` objects supporting additional features than the "Core", such as "HTML" [DOM Level 2 HTML] , based on the `DocumentType` specified at creation time, changing it afterwards is very unlikely to result in a change of the features supported.
      Since:
        DOM Level 3

    - #### getImplementation

          DOMImplementation getImplementation()

      The `DOMImplementation` object that handles this document. A DOM application may use objects from multiple implementations.

    - #### getDocumentElement

          Element getDocumentElement()

      This is a convenience attribute that allows direct access to the child node that is the document element of the document.

    - #### createElement

          Element createElement(java.lang.String tagName)
                                throws DOMException

      Creates an element of the type specified. Note that the instance returned implements the `Element` interface, so attributes can be specified directly on the returned object.
      In addition, if there are known attributes with default values, `Attr` nodes representing them are automatically created and attached to the element.
      To create an element with a qualified name and namespace URI, use the `createElementNS` method.
      Parameters:
        `tagName` - The name of the element type to instantiate. For XML, this is case-sensitive, otherwise it depends on the case-sensitivity of the markup language in use. In that case, the name is mapped to the canonical form of that markup by the DOM implementation.
      Returns:
        A new `Element` object with the `nodeName` attribute set to `tagName`, and `localName`, `prefix`, and `namespaceURI` set to `null`.
      Throws:
        `DOMException` - INVALID_CHARACTER_ERR: Raised if the specified name is not an XML name according to the XML version in use specified in the `Document.xmlVersion` attribute.

    - #### createDocumentFragment

          DocumentFragment createDocumentFragment()

      Creates an empty `DocumentFragment` object.
      Returns:
        A new `DocumentFragment`.

    - #### createTextNode

          Text createTextNode(java.lang.String data)

      Creates a `Text` node given the specified string.
      Parameters:
        `data` - The data for the node.
      Returns:
        The new `Text` object.

    - #### createComment

          Comment createComment(java.lang.String data)

      Creates a `Comment` node given the specified string.
      Parameters:
        `data` - The data for the node.
      Returns:
        The new `Comment` object.

    - #### createCDATASection

          CDATASection createCDATASection(java.lang.String data)
                                          throws DOMException

      Creates a `CDATASection` node whose value is the specified string.
      Parameters:
        `data` - The data for the `CDATASection` contents.
      Returns:
        The new `CDATASection` object.
      Throws:
        `DOMException` - NOT_SUPPORTED_ERR: Raised if this document is an HTML document.

    - #### createProcessingInstruction

          ProcessingInstruction createProcessingInstruction(java.lang.String target,
                                                          java.lang.String data)
                                                            throws DOMException

      Creates a `ProcessingInstruction` node given the specified name and data strings.
      Parameters:
        `target` - The target part of the processing instruction.Unlike `Document.createElementNS` or `Document.createAttributeNS`, no namespace well-formed checking is done on the target name. Applications should invoke `Document.normalizeDocument()` with the parameter " namespaces" set to `true` in order to ensure that the target name is namespace well-formed.
        `data` - The data for the node.
      Returns:
        The new `ProcessingInstruction` object.
      Throws:
        `DOMException` - INVALID_CHARACTER_ERR: Raised if the specified target is not an XML name according to the XML version in use specified in the `Document.xmlVersion` attribute.
        NOT_SUPPORTED_ERR: Raised if this document is an HTML document.

    - #### createAttribute

          Attr createAttribute(java.lang.String name)
                               throws DOMException

      Creates an `Attr` of the given name. Note that the `Attr` instance can then be set on an `Element` using the `setAttributeNode` method.
      To create an attribute with a qualified name and namespace URI, use the `createAttributeNS` method.
      Parameters:
        `name` - The name of the attribute.
      Returns:
        A new `Attr` object with the `nodeName` attribute set to `name`, and `localName`, `prefix`, and `namespaceURI` set to `null`. The value of the attribute is the empty string.
      Throws:
        `DOMException` - INVALID_CHARACTER_ERR: Raised if the specified name is not an XML name according to the XML version in use specified in the `Document.xmlVersion` attribute.

    - #### createEntityReference

          EntityReference createEntityReference(java.lang.String name)
                                                throws DOMException

      Creates an `EntityReference` object. In addition, if the referenced entity is known, the child list of the `EntityReference` node is made the same as that of the corresponding `Entity` node.

      Note: If any descendant of the `Entity` node has an unbound namespace prefix, the corresponding descendant of the created `EntityReference` node is also unbound; (its `namespaceURI` is `null`). The DOM Level 2 and 3 do not support any mechanism to resolve namespace prefixes in this case.

      Parameters:
        `name` - The name of the entity to reference.Unlike `Document.createElementNS` or `Document.createAttributeNS`, no namespace well-formed checking is done on the entity name. Applications should invoke `Document.normalizeDocument()` with the parameter " namespaces" set to `true` in order to ensure that the entity name is namespace well-formed.
      Returns:
        The new `EntityReference` object.
      Throws:
        `DOMException` - INVALID_CHARACTER_ERR: Raised if the specified name is not an XML name according to the XML version in use specified in the `Document.xmlVersion` attribute.
        NOT_SUPPORTED_ERR: Raised if this document is an HTML document.

    - #### getElementsByTagName

          NodeList getElementsByTagName(java.lang.String tagname)

      Returns a `NodeList` of all the `Elements` in document order with a given tag name and are contained in the document.
      Parameters:
        `tagname` - The name of the tag to match on. The special value "*" matches all tags. For XML, the `tagname` parameter is case-sensitive, otherwise it depends on the case-sensitivity of the markup language in use.
      Returns:
        A new `NodeList` object containing all the matched `Elements`.

    - #### importNode

          Node importNode(Node importedNode,
                        boolean deep)
                          throws DOMException

      Imports a node from another document to this document, without altering or removing the source node from the original document; this method creates a new copy of the source node. The returned node has no parent; (`parentNode` is `null`).
      For all nodes, importing a node creates a node object owned by the importing document, with attribute values identical to the source node's `nodeName` and `nodeType`, plus the attributes related to namespaces (`prefix`, `localName`, and `namespaceURI`). As in the `cloneNode` operation, the source node is not altered. User data associated to the imported node is not carried over. However, if any `UserDataHandlers` has been specified along with the associated data these handlers will be called with the appropriate parameters before this method returns.
      Additional information is copied as appropriate to the `nodeType`, attempting to mirror the behavior expected if a fragment of XML or HTML source was copied from one document to another, recognizing that the two documents may have different DTDs in the XML case. The following list describes the specifics for each type of node.
      ATTRIBUTE_NODE
        The `ownerElement` attribute is set to `null` and the `specified` flag is set to `true` on the generated `Attr`. The descendants of the source `Attr` are recursively imported and the resulting nodes reassembled to form the corresponding subtree. Note that the `deep` parameter has no effect on `Attr` nodes; they always carry their children with them when imported.
      DOCUMENT_FRAGMENT_NODE
        If the `deep` option was set to `true`, the descendants of the source `DocumentFragment` are recursively imported and the resulting nodes reassembled under the imported `DocumentFragment` to form the corresponding subtree. Otherwise, this simply generates an empty `DocumentFragment`.
      DOCUMENT_NODE
        `Document` nodes cannot be imported.
      DOCUMENT_TYPE_NODE
        `DocumentType` nodes cannot be imported.
      ELEMENT_NODE
        Specified attribute nodes of the source element are imported, and the generated `Attr` nodes are attached to the generated `Element`. Default attributes are not copied, though if the document being imported into defines default attributes for this element name, those are assigned. If the `importNode` `deep` parameter was set to `true`, the descendants of the source element are recursively imported and the resulting nodes reassembled to form the corresponding subtree.
      ENTITY_NODE
        `Entity` nodes can be imported, however in the current release of the DOM the `DocumentType` is readonly. Ability to add these imported nodes to a `DocumentType` will be considered for addition to a future release of the DOM.On import, the `publicId`, `systemId`, and `notationName` attributes are copied. If a `deep` import is requested, the descendants of the the source `Entity` are recursively imported and the resulting nodes reassembled to form the corresponding subtree.
      ENTITY_REFERENCE_NODE
        Only the `EntityReference` itself is copied, even if a `deep` import is requested, since the source and destination documents might have defined the entity differently. If the document being imported into provides a definition for this entity name, its value is assigned.
      NOTATION_NODE
        `Notation` nodes can be imported, however in the current release of the DOM the `DocumentType` is readonly. Ability to add these imported nodes to a `DocumentType` will be considered for addition to a future release of the DOM.On import, the `publicId` and `systemId` attributes are copied. Note that the `deep` parameter has no effect on this type of nodes since they cannot have any children.
      PROCESSING_INSTRUCTION_NODE
        The imported node copies its `target` and `data` values from those of the source node.Note that the `deep` parameter has no effect on this type of nodes since they cannot have any children.
      TEXT_NODE, CDATA_SECTION_NODE, COMMENT_NODE
        These three types of nodes inheriting from `CharacterData` copy their `data` and `length` attributes from those of the source node.Note that the `deep` parameter has no effect on these types of nodes since they cannot have any children.
      Parameters:
        `importedNode` - The node to import.
        `deep` - If `true`, recursively import the subtree under the specified node; if `false`, import only the node itself, as explained above. This has no effect on nodes that cannot have any children, and on `Attr`, and `EntityReference` nodes.
      Returns:
        The imported node that belongs to this `Document`.
      Throws:
        `DOMException` - NOT_SUPPORTED_ERR: Raised if the type of node being imported is not supported.
        INVALID_CHARACTER_ERR: Raised if one of the imported names is not an XML name according to the XML version in use specified in the `Document.xmlVersion` attribute. This may happen when importing an XML 1.1 [XML 1.1] element into an XML 1.0 document, for instance.
      Since:
        DOM Level 2

    - #### createElementNS

          Element createElementNS(java.lang.String namespaceURI,
                                java.lang.String qualifiedName)
                                  throws DOMException

      Creates an element of the given qualified name and namespace URI.
      Per [XML Namespaces] , applications must use the value `null` as the namespaceURI parameter for methods if they wish to have no namespace.
      Parameters:
        `namespaceURI` - The namespace URI of the element to create.
        `qualifiedName` - The qualified name of the element type to instantiate.
      Returns:
        A new `Element` object with the following attributes:

        Attribute | Value
        --- | ---
        `Node.nodeName` | `qualifiedName`
        `Node.namespaceURI` | `namespaceURI`
        `Node.prefix` | prefix, extracted from `qualifiedName`, or `null` if there is no prefix
        `Node.localName` | local name, extracted from `qualifiedName`
        `Element.tagName` | `qualifiedName`

      Throws:
        `DOMException` - INVALID_CHARACTER_ERR: Raised if the specified `qualifiedName` is not an XML name according to the XML version in use specified in the `Document.xmlVersion` attribute.
        NAMESPACE_ERR: Raised if the `qualifiedName` is a malformed qualified name, if the `qualifiedName` has a prefix and the `namespaceURI` is `null`, or if the `qualifiedName` has a prefix that is "xml" and the `namespaceURI` is different from " http://www.w3.org/XML/1998/namespace" [XML Namespaces] , or if the `qualifiedName` or its prefix is "xmlns" and the `namespaceURI` is different from "http://www.w3.org/2000/xmlns/", or if the `namespaceURI` is "http://www.w3.org/2000/xmlns/" and neither the `qualifiedName` nor its prefix is "xmlns".
        NOT_SUPPORTED_ERR: Always thrown if the current document does not support the `"XML"` feature, since namespaces were defined by XML.
      Since:
        DOM Level 2

    - #### createAttributeNS

          Attr createAttributeNS(java.lang.String namespaceURI,
                               java.lang.String qualifiedName)
                                 throws DOMException

      Creates an attribute of the given qualified name and namespace URI.
      Per [XML Namespaces] , applications must use the value `null` as the `namespaceURI` parameter for methods if they wish to have no namespace.
      Parameters:
        `namespaceURI` - The namespace URI of the attribute to create.
        `qualifiedName` - The qualified name of the attribute to instantiate.
      Returns:
        A new `Attr` object with the following attributes:

        Attribute | Value
        --- | ---
        `Node.nodeName` | qualifiedName
        `Node.namespaceURI` | `namespaceURI`
        `Node.prefix` | prefix, extracted from `qualifiedName`, or `null` if there is no prefix
        `Node.localName` | local name, extracted from `qualifiedName`
        `Attr.name` | `qualifiedName`
        `Node.nodeValue` | the empty string

      Throws:
        `DOMException` - INVALID_CHARACTER_ERR: Raised if the specified `qualifiedName` is not an XML name according to the XML version in use specified in the `Document.xmlVersion` attribute.
        NAMESPACE_ERR: Raised if the `qualifiedName` is a malformed qualified name, if the `qualifiedName` has a prefix and the `namespaceURI` is `null`, if the `qualifiedName` has a prefix that is "xml" and the `namespaceURI` is different from " http://www.w3.org/XML/1998/namespace", if the `qualifiedName` or its prefix is "xmlns" and the `namespaceURI` is different from "http://www.w3.org/2000/xmlns/", or if the `namespaceURI` is "http://www.w3.org/2000/xmlns/" and neither the `qualifiedName` nor its prefix is "xmlns".
        NOT_SUPPORTED_ERR: Always thrown if the current document does not support the `"XML"` feature, since namespaces were defined by XML.
      Since:
        DOM Level 2

    - #### getElementsByTagNameNS

          NodeList getElementsByTagNameNS(java.lang.String namespaceURI,
                                        java.lang.String localName)

      Returns a `NodeList` of all the `Elements` with a given local name and namespace URI in document order.
      Parameters:
        `namespaceURI` - The namespace URI of the elements to match on. The special value `"*"` matches all namespaces.
        `localName` - The local name of the elements to match on. The special value "*" matches all local names.
      Returns:
        A new `NodeList` object containing all the matched `Elements`.
      Since:
        DOM Level 2

    - #### getElementById

          Element getElementById(java.lang.String elementId)

      Returns the `Element` that has an ID attribute with the given value. If no such element exists, this returns `null` . If more than one element has an ID attribute with that value, what is returned is undefined.
      The DOM implementation is expected to use the attribute `Attr.isId` to determine if an attribute is of type ID.

      Note: Attributes with the name "ID" or "id" are not of type ID unless so defined.

      Parameters:
        `elementId` - The unique `id` value for an element.
      Returns:
        The matching element or `null` if there is none.
      Since:
        DOM Level 2

    - #### getInputEncoding

          java.lang.String getInputEncoding()

      An attribute specifying the encoding used for this document at the time of the parsing. This is `null` when it is not known, such as when the `Document` was created in memory.
      Since:
        DOM Level 3

    - #### getXmlEncoding

          java.lang.String getXmlEncoding()

      An attribute specifying, as part of the XML declaration, the encoding of this document. This is `null` when unspecified or when it is not known, such as when the `Document` was created in memory.
      Since:
        DOM Level 3

    - #### getXmlStandalone

          boolean getXmlStandalone()

      An attribute specifying, as part of the XML declaration, whether this document is standalone. This is `false` when unspecified.

      Note: No verification is done on the value when setting this attribute. Applications should use `Document.normalizeDocument()` with the "validate" parameter to verify if the value matches the validity constraint for standalone document declaration as defined in [XML 1.0].

      Since:
        DOM Level 3

    - #### setXmlStandalone

          void setXmlStandalone(boolean xmlStandalone)
                                throws DOMException

      An attribute specifying, as part of the XML declaration, whether this document is standalone. This is `false` when unspecified.

      Note: No verification is done on the value when setting this attribute. Applications should use `Document.normalizeDocument()` with the "validate" parameter to verify if the value matches the validity constraint for standalone document declaration as defined in [XML 1.0].

      Throws:
        `DOMException` - NOT_SUPPORTED_ERR: Raised if this document does not support the "XML" feature.
      Since:
        DOM Level 3

    - #### getXmlVersion

          java.lang.String getXmlVersion()

      An attribute specifying, as part of the XML declaration, the version number of this document. If there is no declaration and if this document supports the "XML" feature, the value is `"1.0"`. If this document does not support the "XML" feature, the value is always `null`. Changing this attribute will affect methods that check for invalid characters in XML names. Application should invoke `Document.normalizeDocument()` in order to check for invalid characters in the `Node`s that are already part of this `Document`.
      DOM applications may use the `DOMImplementation.hasFeature(feature, version)` method with parameter values "XMLVersion" and "1.0" (respectively) to determine if an implementation supports [XML 1.0]. DOM applications may use the same method with parameter values "XMLVersion" and "1.1" (respectively) to determine if an implementation supports [XML 1.1]. In both cases, in order to support XML, an implementation must also support the "XML" feature defined in this specification. `Document` objects supporting a version of the "XMLVersion" feature must not raise a `NOT_SUPPORTED_ERR` exception for the same version number when using `Document.xmlVersion`.
      Since:
        DOM Level 3

    - #### setXmlVersion

          void setXmlVersion(java.lang.String xmlVersion)
                             throws DOMException

      An attribute specifying, as part of the XML declaration, the version number of this document. If there is no declaration and if this document supports the "XML" feature, the value is `"1.0"`. If this document does not support the "XML" feature, the value is always `null`. Changing this attribute will affect methods that check for invalid characters in XML names. Application should invoke `Document.normalizeDocument()` in order to check for invalid characters in the `Node`s that are already part of this `Document`.
      DOM applications may use the `DOMImplementation.hasFeature(feature, version)` method with parameter values "XMLVersion" and "1.0" (respectively) to determine if an implementation supports [XML 1.0]. DOM applications may use the same method with parameter values "XMLVersion" and "1.1" (respectively) to determine if an implementation supports [XML 1.1]. In both cases, in order to support XML, an implementation must also support the "XML" feature defined in this specification. `Document` objects supporting a version of the "XMLVersion" feature must not raise a `NOT_SUPPORTED_ERR` exception for the same version number when using `Document.xmlVersion`.
      Throws:
        `DOMException` - NOT_SUPPORTED_ERR: Raised if the version is set to a value that is not supported by this `Document` or if this document does not support the "XML" feature.
      Since:
        DOM Level 3

    - #### getStrictErrorChecking

          boolean getStrictErrorChecking()

      An attribute specifying whether error checking is enforced or not. When set to `false`, the implementation is free to not test every possible error case normally defined on DOM operations, and not raise any `DOMException` on DOM operations or report errors while using `Document.normalizeDocument()`. In case of error, the behavior is undefined. This attribute is `true` by default.
      Since:
        DOM Level 3

    - #### setStrictErrorChecking

          void setStrictErrorChecking(boolean strictErrorChecking)

      An attribute specifying whether error checking is enforced or not. When set to `false`, the implementation is free to not test every possible error case normally defined on DOM operations, and not raise any `DOMException` on DOM operations or report errors while using `Document.normalizeDocument()`. In case of error, the behavior is undefined. This attribute is `true` by default.
      Since:
        DOM Level 3

    - #### getDocumentURI

          java.lang.String getDocumentURI()

      The location of the document or `null` if undefined or if the `Document` was created using `DOMImplementation.createDocument`. No lexical checking is performed when setting this attribute; this could result in a `null` value returned when using `Node.baseURI` .
      Beware that when the `Document` supports the feature "HTML" [DOM Level 2 HTML] , the href attribute of the HTML BASE element takes precedence over this attribute when computing `Node.baseURI`.
      Since:
        DOM Level 3

    - #### setDocumentURI

          void setDocumentURI(java.lang.String documentURI)

      The location of the document or `null` if undefined or if the `Document` was created using `DOMImplementation.createDocument`. No lexical checking is performed when setting this attribute; this could result in a `null` value returned when using `Node.baseURI` .
      Beware that when the `Document` supports the feature "HTML" [DOM Level 2 HTML] , the href attribute of the HTML BASE element takes precedence over this attribute when computing `Node.baseURI`.
      Since:
        DOM Level 3

    - #### adoptNode

          Node adoptNode(Node source)
                         throws DOMException

      Attempts to adopt a node from another document to this document. If supported, it changes the `ownerDocument` of the source node, its children, as well as the attached attribute nodes if there are any. If the source node has a parent it is first removed from the child list of its parent. This effectively allows moving a subtree from one document to another (unlike `importNode()` which create a copy of the source node instead of moving it). When it fails, applications should use `Document.importNode()` instead. Note that if the adopted node is already part of this document (i.e. the source and target document are the same), this method still has the effect of removing the source node from the child list of its parent, if any. The following list describes the specifics for each type of node.
      ATTRIBUTE_NODE
        The `ownerElement` attribute is set to `null` and the `specified` flag is set to `true` on the adopted `Attr`. The descendants of the source `Attr` are recursively adopted.
      DOCUMENT_FRAGMENT_NODE
        The descendants of the source node are recursively adopted.
      DOCUMENT_NODE
        `Document` nodes cannot be adopted.
      DOCUMENT_TYPE_NODE
        `DocumentType` nodes cannot be adopted.
      ELEMENT_NODE
        Specified attribute nodes of the source element are adopted. Default attributes are discarded, though if the document being adopted into defines default attributes for this element name, those are assigned. The descendants of the source element are recursively adopted.
      ENTITY_NODE
        `Entity` nodes cannot be adopted.
      ENTITY_REFERENCE_NODE
        Only the `EntityReference` node itself is adopted, the descendants are discarded, since the source and destination documents might have defined the entity differently. If the document being imported into provides a definition for this entity name, its value is assigned.
      NOTATION_NODE
        `Notation` nodes cannot be adopted.
      PROCESSING_INSTRUCTION_NODE, TEXT_NODE, CDATA_SECTION_NODE, COMMENT_NODE
        These nodes can all be adopted. No specifics.

      Note: Since it does not create new nodes unlike the `Document.importNode()` method, this method does not raise an `INVALID_CHARACTER_ERR` exception, and applications should use the `Document.normalizeDocument()` method to check if an imported name is not an XML name according to the XML version in use.

      Parameters:
        `source` - The node to move into this document.
      Returns:
        The adopted node, or `null` if this operation fails, such as when the source node comes from a different implementation.
      Throws:
        `DOMException` - NOT_SUPPORTED_ERR: Raised if the source node is of type `DOCUMENT`, `DOCUMENT_TYPE`.
        NO_MODIFICATION_ALLOWED_ERR: Raised when the source node is readonly.
      Since:
        DOM Level 3

    - #### getDomConfig

          DOMConfiguration getDomConfig()

      The configuration used when `Document.normalizeDocument()` is invoked.
      Since:
        DOM Level 3

    - #### normalizeDocument

          void normalizeDocument()

      This method acts as if the document was going through a save and load cycle, putting the document in a "normal" form. As a consequence, this method updates the replacement tree of `EntityReference` nodes and normalizes `Text` nodes, as defined in the method `Node.normalize()`.
      Otherwise, the actual result depends on the features being set on the `Document.domConfig` object and governing what operations actually take place. Noticeably this method could also make the document namespace well-formed according to the algorithm described in , check the character normalization, remove the `CDATASection` nodes, etc. See `DOMConfiguration` for details.

          // Keep in the document
           the information defined // in the XML Information Set (Java example)
           DOMConfiguration docConfig = myDocument.getDomConfig();
           docConfig.setParameter("infoset", Boolean.TRUE);
           myDocument.normalizeDocument();

      Mutation events, when supported, are generated to reflect the changes occurring on the document.
      If errors occur during the invocation of this method, such as an attempt to update a read-only node or a `Node.nodeName` contains an invalid character according to the XML version in use, errors or warnings (`DOMError.SEVERITY_ERROR` or `DOMError.SEVERITY_WARNING`) will be reported using the `DOMErrorHandler` object associated with the "error-handler " parameter. Note this method might also report fatal errors ( `DOMError.SEVERITY_FATAL_ERROR`) if an implementation cannot recover from an error.
      Since:
        DOM Level 3

    - #### renameNode

          Node renameNode(Node n,
                        java.lang.String namespaceURI,
                        java.lang.String qualifiedName)
                          throws DOMException

      Rename an existing node of type `ELEMENT_NODE` or `ATTRIBUTE_NODE`.
      When possible this simply changes the name of the given node, otherwise this creates a new node with the specified name and replaces the existing node with the new node as described below.
      If simply changing the name of the given node is not possible, the following operations are performed: a new node is created, any registered event listener is registered on the new node, any user data attached to the old node is removed from that node, the old node is removed from its parent if it has one, the children are moved to the new node, if the renamed node is an `Element` its attributes are moved to the new node, the new node is inserted at the position the old node used to have in its parent's child nodes list if it has one, the user data that was attached to the old node is attached to the new node.
      When the node being renamed is an `Element` only the specified attributes are moved, default attributes originated from the DTD are updated according to the new element name. In addition, the implementation may update default attributes from other schemas. Applications should use `Document.normalizeDocument()` to guarantee these attributes are up-to-date.
      When the node being renamed is an `Attr` that is attached to an `Element`, the node is first removed from the `Element` attributes map. Then, once renamed, either by modifying the existing node or creating a new one as described above, it is put back.
      In addition,
      - a user data event `NODE_RENAMED` is fired,
      - when the implementation supports the feature "MutationNameEvents", each mutation operation involved in this method fires the appropriate event, and in the end the event { `http://www.w3.org/2001/xml-events`, `DOMElementNameChanged`} or { `http://www.w3.org/2001/xml-events`, `DOMAttributeNameChanged`} is fired.
      Parameters:
        `n` - The node to rename.
        `namespaceURI` - The new namespace URI.
        `qualifiedName` - The new qualified name.
      Returns:
        The renamed node. This is either the specified node or the new node that was created to replace the specified node.
      Throws:
        `DOMException` - NOT_SUPPORTED_ERR: Raised when the type of the specified node is neither `ELEMENT_NODE` nor `ATTRIBUTE_NODE`, or if the implementation does not support the renaming of the document element.
        INVALID_CHARACTER_ERR: Raised if the new qualified name is not an XML name according to the XML version in use specified in the `Document.xmlVersion` attribute.
        WRONG_DOCUMENT_ERR: Raised when the specified node was created from a different document than this document.
        NAMESPACE_ERR: Raised if the `qualifiedName` is a malformed qualified name, if the `qualifiedName` has a prefix and the `namespaceURI` is `null`, or if the `qualifiedName` has a prefix that is "xml" and the `namespaceURI` is different from " http://www.w3.org/XML/1998/namespace" [XML Namespaces] . Also raised, when the node being renamed is an attribute, if the `qualifiedName`, or its prefix, is "xmlns" and the `namespaceURI` is different from "http://www.w3.org/2000/xmlns/".
      Since:
        DOM Level 3

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