Create Namespace : Namespace « XML « Java

Create Namespace

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import javax.xml.XMLConstants;

import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
 * Few simple utils to read DOM. This is originally from the Jakarta Commons Modeler.
 * @author Costin Manolache
public class Utils {
  private static final String XMLNAMESPACE = "xmlns";
  public static String createNamespace(Element el, String ns) {
    String p = "ns1";
    int i = 1;
    while (getPrefix(el, ns) != null) {
        p = "ns" + i;
    el.setAttribute(XMLNAMESPACE + ":" + p, ns);
    return p;
  public static String getPrefix(Element el, String ns) {
    NamedNodeMap atts = el.getAttributes();
    for (int i = 0; i < atts.getLength(); i++) {
        Node node = atts.item(i);
        String name = node.getNodeName();
        if (ns.equals(node.getNodeValue())
            && (name != null && (XMLNAMESPACE.equals(name) || name.startsWith(XMLNAMESPACE + ":")))) {
            return node.getPrefix();
    return null;


Related examples in the same category

1.Namespace Attribute Event Output
2.Namespace Attribute Event Output 1
3.Attribute with Namespace
4.Start element with namespace
5.Handling namespaces during parsing
6.Access elements from document with namespaces
7.Checks whether the supplied String is an NCName (Namespace Classified Name)
8.Set a namespace/prefix on an element if it is not set already.
9.Add a namespace prefix definition to an element.
10.Get all prefixes defined on this element for the specified namespace.
11.Get all prefixes defined, up to the root, for a namespace URI.
12.Creates a QName instance from the given namespace context for the given qualifiedName
13.Starting from a node, find the namespace declaration for a prefix.
14.Build a QName from the element name