Find all elements with the name 'entry' and append a comment : Comment « XML « Java Tutorial


import javax.xml.parsers.DocumentBuilderFactory;

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

public class Main {
  public static void main(String[] argv) throws Exception {

    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();


    Document doc = factory.newDocumentBuilder().parse(new File("filename"));

    NodeList list = doc.getElementsByTagName("entry");
    for (int i = 0; i < list.getLength(); i++) {
      Element element = (Element) list.item(i);
      Comment comment = doc.createComment("index=" + i);

      element.getParentNode().insertBefore(comment, element.getNextSibling());

33.24.1.Add a comment at the beginning of the document
33.24.2.Find all elements with the name 'entry' and append a comment
33.24.3.'--' must never appear in the text used to create the comment
33.24.4.Insert a comment in front of the element node
33.24.5.Ignoring Comments While Parsing an XML File