Here you can find the source of getNamespaceCtx()
private static NamespaceContext getNamespaceCtx()
//package com.java2s; /**//from ww w . ja v a 2 s .c om * The MIT License * Copyright (c) 2015 Estonian Information System Authority (RIA), Population Register Centre (VRK) * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ import java.util.Iterator; import javax.xml.namespace.NamespaceContext; public class Main { static final String NS_ASIC = "http://uri.etsi.org/02918/v1.1.1#"; static final String NS_DS = "http://www.w3.org/2000/09/xmldsig#"; static final String NS_XADES = "http://uri.etsi.org/01903/v1.3.2#"; private static NamespaceContext getNamespaceCtx() { return new NamespaceContext() { @Override public String getNamespaceURI(String prefix) { switch (prefix) { case "asic": return NS_ASIC; case "ds": return NS_DS; case "xades": return NS_XADES; default: return null; } } @Override public Iterator<?> getPrefixes(String val) { return null; } @Override public String getPrefix(String uri) { return null; } }; } }