Java HTML / XML How to - Update the input XML file with namespce in JAVA using DOM parser

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Question

We would like to know how to update the input XML file with namespce in JAVA using DOM parser.

Answer

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
/*from   w ww .j  a v  a 2 s.  c  om*/
import org.w3c.dom.Document;
import org.w3c.dom.Element;

public class Main {

  public static void main(String[] args) throws Exception {
    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    dbf.setNamespaceAware(true);
    DocumentBuilder db = dbf.newDocumentBuilder();

    // Create original document
    Document document = db.newDocument();
    Element root = document.createElementNS("urn:FOO", "ns0:Root");
    document.appendChild(root);
    Element request = document.createElementNS("urn:FOO", "ns0:Request");
    root.appendChild(request);

    // Create new Request element.
    Element newRequest = document.createElementNS("urn:BAR", "ns1:Request");

    // Replace Request element
    root.replaceChild(newRequest, request);

    // Output the new document
    TransformerFactory tf = TransformerFactory.newInstance();
    Transformer t = tf.newTransformer();
    DOMSource source = new DOMSource(document);
    StreamResult result = new StreamResult(System.out);
    t.transform(source, result);
  }

}

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