Validare xml cu xsd in Java

private static void initialize() throws SAXException { 

    final SchemaFactory factory = 

        SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI); 

    final InputStream xsdStream = XmlDocumentValidator.class.getClassLoader()
        .getResourceAsStream(SCHEMA_PATH);            

    final Schema schema = factory.newSchema(new StreamSource(xsdStream)); 

    validator = schema.newValidator();      

    validator.setProperty(XMLConstants.ACCESS_EXTERNAL_DTD, ""); 

    validator.setProperty(XMLConstants.ACCESS_EXTERNAL_SCHEMA, ""); 

} 

public static boolean validateSchema(Resource resource) { 

    try (InputStream inputStream = resource.getInputStream()) { 

        if (validator == null) { 

            initialize(); 

        } 

        validator.validate(new StreamSource(inputStream)); 

        return true; 

    } catch (final SAXException | IOException e) { 

        LOGGER.error("Schema validation failed", e); 

        return false; 

    } 

}