Here you can find the source of isSameNamespace(QName q1, QName q2)
private static boolean isSameNamespace(QName q1, QName q2)
//package com.java2s; /*/*from w w w .j a va2 s . com*/ * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. 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. For additional information regarding * copyright in this work, please see the NOTICE file in the top level * directory of this distribution. */ import javax.xml.namespace.QName; public class Main { private static boolean isSameNamespace(QName q1, QName q2) { if (q1 == null && q2 != null) return false; if (q1 != null && q2 == null) return false; String p1 = q1 == null ? "" : q1.getPrefix() != null ? q1.getPrefix() : ""; String p2 = q2 == null ? "" : q2.getPrefix() != null ? q2.getPrefix() : ""; String n1 = q1 == null ? "" : q1.getNamespaceURI() != null ? q1.getNamespaceURI() : ""; String n2 = q2 == null ? "" : q2.getNamespaceURI() != null ? q2.getNamespaceURI() : ""; return n1.equals(n2) && p1.equals(p2); } }