http://xml.apache.org/commons/components/external/: xml-commons provides an Apache-hosted set of DOM, SAX, and JAXP interfaces for use in other xml-based projects. Our hope is that we can standardize on both a common version and packaging scheme for these critical XML standards interfaces to make the lives of both our developers and users easier. The External Components portion of xml-commons contains interfaces that are defined by external standards organizations. For DOM, that's the W3C; for SAX it's David Megginson and sax.sourceforge.net; for JAXP it's Sun. 
/*
 * Copyright (c) 2004 World Wide Web Consortium,
 *
 * (Massachusetts Institute of Technology, European Research Consortium for
 * Informatics and Mathematics, Keio University). All Rights Reserved. This
 * work is distributed under the W3C(r) Software License [1] in the hope that
 * it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * [1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231
 */

package org.w3c.dom;


 The NameList interface provides the abstraction of an ordered 
collection of parallel pairs of name and namespace values (which could be 
null values), without defining or constraining how this collection is 
implemented. The items in the NameList are accessible via an 
integral index, starting from 0. 

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

Since:DOM Level 3
/**
 *  The <code>NameList</code> interface provides the abstraction of an ordered 
 * collection of parallel pairs of name and namespace values (which could be 
 * null values), without defining or constraining how this collection is 
 * implemented. The items in the <code>NameList</code> are accessible via an 
 * integral index, starting from 0. 
 * <p>See also the <a href='http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407'>Document Object Model (DOM) Level 3 Core Specification</a>.
 * @since DOM Level 3
 */
public interface NameList {
    
 Returns the indexth name item in the collection. 

Params:
  • index – Index into the collection.
Returns: The name at the indexth position in the 
  NameList, or null if there is no name for 
  the specified index or if the index is out of range.
/**
     *  Returns the <code>index</code>th name item in the collection. 
     * @param index Index into the collection.
     * @return  The name at the <code>index</code>th position in the 
     *   <code>NameList</code>, or <code>null</code> if there is no name for 
     *   the specified index or if the index is out of range. 
     */
    public String getName(int index);

    
 Returns the indexth namespaceURI item in the collection. 

Params:
  • index – Index into the collection.
Returns: The namespace URI at the indexth position in the 
  NameList, or null if there is no name for 
  the specified index or if the index is out of range.
/**
     *  Returns the <code>index</code>th namespaceURI item in the collection. 
     * @param index Index into the collection.
     * @return  The namespace URI at the <code>index</code>th position in the 
     *   <code>NameList</code>, or <code>null</code> if there is no name for 
     *   the specified index or if the index is out of range. 
     */
    public String getNamespaceURI(int index);

    
 The number of pairs (name and namespaceURI) in the list. The range of 
valid child node indices is 0 to length-1 inclusive. 

/**
     *  The number of pairs (name and namespaceURI) in the list. The range of 
     * valid child node indices is 0 to <code>length-1</code> inclusive. 
     */
    public int getLength();

    
 Test if a name is part of this NameList. 

Params:
  • str –  The name to look for.
Returns: true if the name has been found, 
  false otherwise.
/**
     *  Test if a name is part of this <code>NameList</code>. 
     * @param str  The name to look for. 
     * @return  <code>true</code> if the name has been found, 
     *   <code>false</code> otherwise. 
     */
    public boolean contains(String str);

    
 Test if the pair namespaceURI/name is part of this 
NameList. 

Params:
  • namespaceURI –  The namespace URI to look for.
  • name –  The name to look for.
Returns: true if the pair namespaceURI/name has been 
  found, false otherwise.
/**
     *  Test if the pair namespaceURI/name is part of this 
     * <code>NameList</code>. 
     * @param namespaceURI  The namespace URI to look for. 
     * @param name  The name to look for. 
     * @return  <code>true</code> if the pair namespaceURI/name has been 
     *   found, <code>false</code> otherwise. 
     */
    public boolean containsNS(String namespaceURI, 
                              String name);

}