Access elements from document with namespaces : Namespace « XML « Java Tutorial

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Attr;
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();

    DocumentBuilder loader = factory.newDocumentBuilder();
    Document document = loader.parse("sample.xml");

    String docNS = "";

    Element order = document.getDocumentElement();
    Attr date = order.getAttributeNodeNS(docNS, "date");
    NodeList children = order.getElementsByTagNameNS(docNS, "item");


33.26.1.Access elements from document with namespaces
33.26.2.Handling namespaces during parsing
33.26.3.Create Namespace
33.26.4.Get Attribute by QName
33.26.5.Set a namespace/prefix on an element if it is not set already.
33.26.6.Get all prefixes defined on this element for the specified namespace.
33.26.7.Get all prefixes defined, up to the root, for a namespace URI.
33.26.8.Creates a QName instance from the given namespace context for the given qualifiedName
33.26.9.Starting from a node, find the namespace declaration for a prefix.
33.26.10.Returns the first element that has the specified local name.
33.26.11.Checks whether the supplied String is an NCName (Namespace Classified Name)
33.26.12.Finds and returns the first child node with the given qualified name.
33.26.13.Finds and returns the last child node with the given qualified name.
33.26.14.Finds and returns the next sibling node with the given qualified name.