Java tutorial
//package com.java2s; import javax.xml.xpath.*; public class Main { private static XPathFactory xpathFactory = null; /** * This method yields the XPath Factory (creating it if necessary). * @return The XPathFactory object. * * @author <a href='mailto:intere@gmail.com'>Eric Internicola</a> */ protected static synchronized XPathFactory getXPathFactory() { if (xpathFactory == null) { xpathFactory = XPathFactory.newInstance(); } return xpathFactory; } }