Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

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

public class Main {
    /**
     * Get Element by according tag
     * Only one such element should exist
     *
     * @param document document to search
     * @param tag tag to look for in document
     * @return corresponding element
     */
    public static Element getSingleAppearingElementByTag(Document document, String tag) {
        NodeList elementList = document.getElementsByTagName(tag);
        if (elementList.getLength() != 1)
            return null;

        Node nNode = elementList.item(0);
        if (nNode.getNodeType() == Node.ELEMENT_NODE) {
            return (Element) nNode;
        }
        return null;
    }
}