// use the XSD schema at: http://www.w3.org/2001/XMLSchema written as a DTD
SchemaFactory schemaFactory = SchemaFactory.newInstance( XMLConstants.W3C_XML_SCHEMA_NS_URI );

// or use RELAX NG scheme at http://relaxng.org/ns/structure/1.0
SchemaFactory schemaFactory = SchemaFactory.newInstance( XMLConstants.RELAXNG_NS_URI );