Here you can find the source of read(String filename)
public static Document read(String filename)
//package com.java2s; import java.io.File; import java.io.IOException; import java.io.StringReader; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import org.w3c.dom.Document; import org.xml.sax.EntityResolver; import org.xml.sax.InputSource; import org.xml.sax.SAXException; public class Main { public static Document read(String filename) { DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); factory.setValidating(false);//from w w w . ja va 2 s .c o m DocumentBuilder builder = null; Document document = null; try { builder = factory.newDocumentBuilder(); builder.setEntityResolver(new EntityResolver() { public InputSource resolveEntity(String publicId, String systemId) throws SAXException, IOException { return new InputSource(new StringReader("")); } }); document = builder.parse(new File(filename)); document.getDocumentElement().normalize(); } catch (Exception e) { } return document; } }