Here you can find the source of getXPathFactory()
public static XPathFactory getXPathFactory()
//package com.java2s; /************************************************************************* * * * This file is part of the 20n/act project. * * 20n/act enables DNA prediction for synthetic biology/bioengineering. * * Copyright (C) 2017 20n Labs, Inc. * * * * Please direct all queries to act@20n.com. * * * * This program is free software: you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation, either version 3 of the License, or * * (at your option) any later version. * * * * This program is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * GNU General Public License for more details. * * * * You should have received a copy of the GNU General Public License * * along with this program. If not, see <http://www.gnu.org/licenses/>. * * * *************************************************************************/ import javax.xml.xpath.XPathFactory; public class Main { private static final ThreadLocal<XPathFactory> XPATH_FACTORY = new ThreadLocal<XPathFactory>() { @Override/*from w w w .j ava 2 s .c om*/ protected XPathFactory initialValue() { return XPathFactory.newInstance(); } }; public static XPathFactory getXPathFactory() { return XPATH_FACTORY.get(); } }