question: public static Document readDocument ( String fileName ) throws SAXException , IOException { DocumentBuilder docBuilder ; Document result = null ; DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory . newInstance ( ) ; docBuilderFactory . setIgnoringElementContentWhitespace ( true ) ; try { docBuilder = docBuilderFactory . newDocumentBuilder ( ) ; } catch ( ParserConfigurationException e ) { throw new Error ( e ) ; } File sourceFile = new File ( fileName ) ; result = docBuilder . parse ( sourceFile ) ; return result ; }
target:  Reads document from file