Java tutorial
//package com.java2s; /* * This file is part of MashupMedia. * * MashupMedia 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. * * MashupMedia 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 MashupMedia. If not, see <http://www.gnu.org/licenses/>. */ import javax.xml.xpath.XPathFactory; public class Main { private static XPathFactory xPathFactory; public static XPathFactory getxPathFactory() { if (xPathFactory != null) { return xPathFactory; } xPathFactory = XPathFactory.newInstance(); return xPathFactory; } }