Counts the number of immediate child XML elements of the specified element whose names match the provided name parameter. - Java XML

Java examples for XML:XML Element Child

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Description

Counts the number of immediate child XML elements of the specified element whose names match the provided name parameter.

Demo Code

/* // w w w .  j av  a 2s.  c  o m
 * This file is part of the Echo Web Application Framework (hereinafter "Echo").
 * Copyright (C) 2002-2009 NextApp, Inc.
 *
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
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 */
//package com.java2s;

import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class Main {
    /**
     * Counts the number of immediate child elements of the specified element
     * whose names match the provided <code>name</code> parameter.
     * 
     * @param parentElement The element to analyze.
     * @param name The name of the child element.
     * @return The number of matching child elements.
     */
    public static int getChildElementCountByTagName(Element parentElement,
            String name) {
        NodeList nodes = parentElement.getChildNodes();
        int length = nodes.getLength();
        int count = 0;
        for (int index = 0; index < length; ++index) {
            if (nodes.item(index).getNodeType() == Node.ELEMENT_NODE
                    && name.equals(nodes.item(index).getNodeName())) {
                ++count;
            }
        }
        return count;
    }
}

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