Java XML Child Node Get getChildElements(final Node parentNode, final String... childNodeNames)

Description

Get all child elements with the specified name(s) from the given parent node.

License

Open Source License

Parameter

Parameter	Description
parentNode	node to retrieve the child elements from
childNodeNames	names of the targeted child elements

Return

all child elements with the given name

Declaration

public static List<Element> getChildElements(final Node parentNode, final String... childNodeNames) 

Method Source Code

//package com.java2s;
/*/*from w  ww  .  j  a va 2  s.  c om*/
   Copyright (C) 2016 HermeneutiX.org
    
   This file is part of SciToS.
    
   SciToS is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
    
   SciToS is distributed 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.  See the
   GNU General Public License for more details.
    
   You should have received a copy of the GNU General Public License
   along with SciToS. If not, see <http://www.gnu.org/licenses/>.
 */

import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;

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

public class Main {
    /**
     * Get all child elements with the specified name(s) from the given parent node. Returns an empty list if no child element with the specified
     * name(s) exist.
     *
     * @param parentNode
     *            node to retrieve the child elements from
     * @param childNodeNames
     *            names of the targeted child elements
     * @return all child elements with the given name
     */
    public static List<Element> getChildElements(final Node parentNode, final String... childNodeNames) {
        final List<Element> children = new LinkedList<Element>();
        final NodeList candidates = parentNode.getChildNodes();
        final int childCount = candidates.getLength();
        final List<String> targetNodeNames = Arrays.asList(childNodeNames);
        for (int childIndex = 0; childIndex < childCount; childIndex++) {
            final Node singleChild = candidates.item(childIndex);
            if (singleChild instanceof Element && (targetNodeNames.isEmpty()
                    || targetNodeNames.contains(((Element) singleChild).getTagName()))) {
                children.add((Element) singleChild);
            }
        }
        return children;
    }
}

Related

1. getChildElements(final Node node)
2. getChildElements(Node element)
3. getChildElements(Node node)
4. getChildElements(Node node)
5. getChildElements(Node node)