DOM XML Load validation

The example below adds DOM schema validation when you are parsing the XML input file to the DOM load/save example.
The example also features a DOM Level 3 DOMErrorHandler.
Also compare with the editing validation example.

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62

// SimpleDOML3XSD.java   import org.w3c.dom.*; import org.w3c.dom.bootstrap.DOMImplementationRegistry; import org.w3c.dom.ls.*;   import javax.xml.XMLConstants; import java.io.OutputStreamWriter;   public class SimpleDOML3LSXSD {     public static void main(String args[]) {     Document doc;     try {         // Create DOM Document using DOM Level 3 Load       DOMImplementationLS ls = (DOMImplementationLS) DOMImplementationRegistry.         newInstance().getDOMImplementation("LS");       LSParser builder = ls.createLSParser(         DOMImplementationLS.MODE_SYNCHRONOUS,         // for DTD use XMLConstants.XML_DTD_NS_URI         XMLConstants.W3C_XML_SCHEMA_NS_URI);       DOMConfiguration config = builder.getDomConfig();       config.setParameter("validate", true);       config.setParameter("error-handler", new StdErrorHandler());       doc = builder.parseURI(args[0]);         // Obtain root elements       Element root = doc.getDocumentElement();         // Add comment texts       Comment comment = doc.createComment("Training text");       root.appendChild(comment);         // Output to standard output; using DOM Level 3 save       LSOutput target = ls.createLSOutput();       target.setCharacterStream(new OutputStreamWriter(System.out));       ls.createLSSerializer().write(doc, target);       } catch (Exception e) {       System.out.println(e.getMessage());       e.printStackTrace();       System.exit(0);     }   }     private static class StdErrorHandler implements DOMErrorHandler {       public boolean handleError(DOMError e) {       String prefix = "Severity ";       if (e.getLocation().getLineNumber() != -1) {          prefix = "Line " + e.getLocation().getLineNumber()           + " column  " + e.getLocation().getColumnNumber()           + ", severity ";       }       System.err.println(         prefix + e.getSeverity()           + " issue: " + e.getMessage());       return true;     }   } }