Here you can find the source of parseXml(InputStream src)
public static Node parseXml(InputStream src)
//package com.java2s; /*/* w w w .j a v a 2 s . c o m*/ * #%L * Xacml4J Core Engine Implementation * %% * Copyright (C) 2009 - 2014 Xacml4J.org * %% * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser 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 Lesser Public License for more details. * * You should have received a copy of the GNU General Lesser Public * License along with this program. If not, see * <http://www.gnu.org/licenses/lgpl-3.0.html>. * #L% */ import java.io.InputStream; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.ParserConfigurationException; import org.w3c.dom.Node; import org.xml.sax.InputSource; import com.google.common.base.Preconditions; public class Main { private static DocumentBuilderFactory documentBuilderFactory; public static Node parseXml(InputStream src) { if (src == null) { return null; } return parseXml(new InputSource(src)); } public static Node parseXml(InputSource src) { Preconditions.checkNotNull(src); DocumentBuilder documentBuilder = null; try { documentBuilder = documentBuilderFactory.newDocumentBuilder(); } catch (ParserConfigurationException e) { throw new IllegalStateException(String.format( "Failed to build %s", DocumentBuilder.class.getName()), e); } try { return documentBuilder.parse(src); } catch (Exception e) { throw new IllegalArgumentException(String.format( "Failed to parse DOM from string: \"%s\"", src), e); } } }