Resolving which version of an XML Schema to use for XML documents with a version attribute

Question

I have to write some code to handle reading and validating XML documents that use a version attribute in their root element to declare a version number, like this:

Answer 1

My Suggestion

1. Parse the Document using SAX or DOM
2. Get the version attribute
3. Use the Validator.validate(Source) method and and use the already parsed Document (from step 1) as shown below

Building DOMSource from parsed document

DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.parse(new File(args[0]));

domSource = new DOMSource(document);