Here you can find the source of isNamespace(Node node)
public static boolean isNamespace(Node node)
//package com.java2s; /**// w w w. j a v a 2 s. co m * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ import org.w3c.dom.Node; import javax.xml.XMLConstants; public class Main { public static boolean isNamespace(Node node) { final short nodeType = node.getNodeType(); if (nodeType == Node.ATTRIBUTE_NODE) { final String namespaceURI = node.getNamespaceURI(); return XMLConstants.XMLNS_ATTRIBUTE_NS_URI.equals(namespaceURI); } return false; } }