Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * SIP Communicator, the OpenSource Java VoIP and Instant Messaging client.
 *
 * Distributable under LGPL license.
 * See terms of license at gnu.org.
 */

import org.w3c.dom.*;

public class Main {
    /**
     * Returns the child element with the specified tagName for the specified
     * parent element.
     * @param parent The parent whose child we're looking for.
     * @param tagName the name of the child to find
     * @return The child with the specified name or null if no such child was
     *         found.
     * @throws NullPointerException if parent or tagName are null
     */
    public static Element findChild(Element parent, String tagName) {
        if (parent == null || tagName == null)
            throw new NullPointerException(
                    "Parent or tagname were null! " + "parent = " + parent + "; tagName = " + tagName);

        NodeList nodes = parent.getChildNodes();
        Node node;
        int len = nodes.getLength();
        for (int i = 0; i < len; i++) {
            node = nodes.item(i);
            if (node.getNodeType() == Node.ELEMENT_NODE && ((Element) node).getNodeName().equals(tagName))
                return (Element) node;
        }

        return null;
    }
}