Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

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

public class Main {
    /**
     * Static helper function to get the element data of the specified node.
     * 
     * @param node
     *            the node where the text data resides; may be <code>null</code>
     *            in which case this funtion will return ""
     * 
     * @return the complete text of the specified node, or an empty string if
     *         the node has no text or is <code>null</code>
     */
    public static String getElementData(final Node node) {
        StringBuffer ret = new StringBuffer();

        if (node != null) {
            Node text;
            for (text = node.getFirstChild(); text != null; text = text.getNextSibling()) {
                /**
                 * the item's value is in one or more text nodes which are its
                 * immediate children
                 */
                if (text.getNodeType() == Node.TEXT_NODE || text.getNodeType() == Node.CDATA_SECTION_NODE) {
                    ret.append(text.getNodeValue());
                } else {
                    if (text.getNodeType() == Node.ENTITY_REFERENCE_NODE) {
                        ret.append(getElementData(text));
                    }
                }
            }
        }
        return ret.toString();
    }

    /**
     * Gets the text value of the specified element.
     * 
     * @param root
     *            the root of the element whose text is to be retrieved; assumed
     *            not to be <code>null</code>.
     * @param elementName
     *            the name of the element whose text is to be retrieved.
     * 
     * @return the retrieved text value of the specified element or null if root
     *         has no given element.
     */
    public static String getElementData(final Element root, final String elementName) {
        NodeList nodes = root.getElementsByTagName(elementName);
        if (nodes.getLength() < 1) {
            return null;
        }

        return getElementData(nodes.item(0));
    }
}