Validation of Document
import org.xml.sax.Parser;
import org.xml.sax.ErrorHandler;
import org.xml.sax.helpers.ParserFactory;
static final String parserClass = "com.ibm.xml.parsers.ValidatingSAXParser";
public static void main (String args[]) throws Exception {
Parser parser = ParserFactory.makeParser(parserClass);
ErrorHandler handler = new ErrorReport();
parser.setErrorHandler(handler);