TTML XPath example

Main.java

public final class Main {

    public static void main(String[] args) throws Exception {
        XPath xpath = XPathFactory.newInstance().newXPath();

        DocumentBuilder parser = DocumentBuilderFactory.newInstance().newDocumentBuilder();
        Document document = parser.parse(new InputSource(new FileInputStream("ReplaceWithYourTtmlFile.ttml")));

        Node metadata = (Node) xpath.compile("/tt/head/metadata").evaluate(document, XPathConstants.NODE);
        System.out.println(nodeToString(metadata));
    }

    private static String nodeToString(Node node) throws Exception {
        StringWriter sw = new StringWriter();

        Transformer transformer = TransformerFactory.newInstance().newTransformer();
        transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
        transformer.setOutputProperty(OutputKeys.INDENT, "yes");
        transformer.transform(new DOMSource(node), new StreamResult(sw));

        return sw.toString();
    }

    private Main() {}
}