Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
// Licensed under the Apache License, Version 2.0 (the "License");

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

public class Main {
    /**
     * Get text data of first XML {@code org.w3c.dom.Element} of given name.
     *
     * @param elem the parent XML Element
     * @param name the name of the child text Element
     * @return text data of named child Element
     */
    public static String getFirstElementByTagName(Element elem, String name) {
        return getElementByTagName(elem, name, null);
    }

    /**
     * Get text data of first XML {@code org.w3c.dom.Element} of given name.
     *
     * @param elem the parent XML Element
     * @param name the name of the child text Element
     * @param emptyValue value to return if element exists, but is empty
     * @return text data of named child Element
     */
    private static String getElementByTagName(Element elem, String name, String emptyValue) {
        NodeList nodeList = elem.getElementsByTagName(name);
        if (nodeList.getLength() == 0) {
            return null;
        }

        NodeList children = nodeList.item(0).getChildNodes();
        if (children.getLength() == 0 || children.item(0).getNodeType() != Node.TEXT_NODE) {
            return emptyValue;
        }
        return children.item(0).getNodeValue();
    }
}