code: public static void validate(final String xsdFilename, final InputSource is, final ParserOptions options)
          throws Exception
      {
          final DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
          final SchemaFactory schemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
  
          factory.setSchema(schemaFactory.newSchema(new File(xsdFilename)));
          factory.setNamespaceAware(true);
  
          if (options.xIncludeAware())
          {
              factory.setXIncludeAware(true);
              factory.setFeature("http://apache.org/xml/features/xinclude/fixup-base-uris", false);
          }
  
          factory.newDocumentBuilder().parse(is);
      }
docs: Validate the document against a given schema. Error will be written to {@link java.lang.System#err}
  
  @param xsdFilename schema to validate against.
  @param is          source from which schema is read. Ideally it will have the systemId property set to resolve
  relative references.
  @param options     to be applied during parsing.
  @throws Exception if an error occurs when parsing the document or schema.