Java tutorial
import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import org.w3c.dom.Document; import org.w3c.dom.Element; public class Main { public static void main(String[] argv) throws Exception { DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); factory.setNamespaceAware(true); DocumentBuilder loader = factory.newDocumentBuilder(); Document document = loader.newDocument(); String docNS = "http://www.my-company.com"; Element order = document.createElementNS(docNS, "order"); document.appendChild(order); order.setAttribute("xmlns", docNS); } }