Validating a HUGE XML file
Instead of using a DOMParser, use a SAXParser. This reads from an input stream or reader so you can keep the XML on disk instead of loading it all into memory.
SAXParserFactory factory = SAXParserFactory.newInstance();factory.setValidating(true);factory.setNamespaceAware(true);SAXParser parser = factory.newSAXParser();XMLReader reader = parser.getXMLReader();reader.setErrorHandler(new SimpleErrorHandler());reader.parse(new InputSource(new FileReader ("document.xml")));
Personally I like to use XMLStarlet which has a command line interface, and works on streams. It is a set of tools built on Libxml2.