Which tech is for validate xml to specific xml schema at runtime

Question

I got a request.
we have input xml, we have the xml schema.
we need to validate xml and see if it follows the schema at run time.
which tech is good and pupolar for this request in the market
Thanks.
Jack Tie

Answer 1

JDK 1.5:
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    factory.setNamespaceAware(true);
    factory.setValidating(true);
    factory.setAttribute(
            "http://java.sun.com/xml/jaxp/properties/schemaLanguage",
            XMLConstants.W3C_XML_SCHEMA_NS_URI);
    factory.setAttribute(
            "http://java.sun.com/xml/jaxp/properties/schemaSource",
            urlAsString);
    DocumentBuilder builder = newDocumentBuilder(factory);
    builder.setErrorHandler(errorHandler);
    builder.parse();