get Child XML Elements By Tag Name - Java XML

Java examples for XML:XML Element Child

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Description

get Child XML Elements By Tag Name

Demo Code

/*/*from ww w. ja v a2s  .  c o m*/
 * Copyright 2010 Attribyte, LLC 
 * 
 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, 
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
 * See the License for the specific language governing permissions and limitations under the License.  
 * 
 */
//package com.java2s;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;

public class Main {
    public static final List<Element> getChildElementsByTagName(
            final Element parentElem, final String childName) {
        NodeList childList = parentElem.getElementsByTagName(childName);
        if (childList.getLength() > 0) {
            List<Element> childElements = new LinkedList<Element>();
            for (int i = 0; i < childList.getLength(); i++) {
                Node curr = childList.item(i);
                if (curr instanceof Element
                        && curr.getParentNode() == parentElem) {
                    childElements.add((Element) curr);
                }
            }
            return childElements;
        } else {
            return Collections.emptyList();
        }
    }
}

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