1 /*
2  * Copyright (c) 2004 World Wide Web Consortium,
3  *
4  * (Massachusetts Institute of Technology, European Research Consortium for
5  * Informatics and Mathematics, Keio University). All Rights Reserved. This
6  * work is distributed under the W3C(r) Software License [1] in the hope that
7  * it will be useful, but WITHOUT ANY WARRANTY; without even the implied
8  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
9  *
10  * [1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231
11  */
12 
13 package org.w3c.dom;
14 
15 /**
16  * The <code>NodeList</code> interface provides the abstraction of an ordered
17  * collection of nodes, without defining or constraining how this collection
18  * is implemented. <code>NodeList</code> objects in the DOM are live.
19  * <p>The items in the <code>NodeList</code> are accessible via an integral
20  * index, starting from 0.
21  * <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>.
22  */
23 public interface NodeList {
24     /**
25      * Returns the <code>index</code>th item in the collection. If
26      * <code>index</code> is greater than or equal to the number of nodes in
27      * the list, this returns <code>null</code>.
28      * @param index Index into the collection.
29      * @return The node at the <code>index</code>th position in the
30      *   <code>NodeList</code>, or <code>null</code> if that is not a valid
31      *   index.
32      */
item(int index)33     public Node item(int index);
34 
35     /**
36      * The number of nodes in the list. The range of valid child node indices
37      * is 0 to <code>length-1</code> inclusive.
38      */
getLength()39     public int getLength();
40 
41 }
42