Java XML Tutorial - Java Document .getElementsByTagName (String tagname)


Document.getElementsByTagName(String tagname) has the following syntax.

NodeList getElementsByTagName(String tagname)


In the following code shows how to use Document.getElementsByTagName(String tagname) method.

//from w  ww.  j  a v  a  2  s . co m
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

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

public class Main {
  public static void main(String[] args) throws IOException, ParserConfigurationException,
      org.xml.sax.SAXException {

    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    factory.setCoalescing(true); // Convert CDATA to Text nodes
    factory.setNamespaceAware(false); // No namespaces: this is default
    factory.setValidating(false); // Don't validate DTD: also default

    DocumentBuilder parser = factory.newDocumentBuilder();

    Document document = parser.parse(new File(args[0]));

    NodeList sections = document.getElementsByTagName("sect1");
    int numSections = sections.getLength();
    for (int i = 0; i < numSections; i++) {
      Element section = (Element) sections.item(i); // A <sect1>

      Node title = section.getFirstChild();
      while (title != null && title.getNodeType() != Node.ELEMENT_NODE)
        title = title.getNextSibling();

      if (title != null)