// set up validator
ValidatorHandler validator = configSchema.newValidator();
validator.setErrorHandler(errorHandler);
// the validator will receive events first, then the parser.
reader.setContentHandler(new ForkContentHandler(validator,runtime));
reader.setErrorHandler(errorHandler);
Config config = new Config(runtime);
runtime.setRootHandler(config);
reader.parse(new InputSource(xmlFile.toURL().toExternalForm()));