What is the shortest way to pretty print a org.w3c.dom.Document to stdout?

Question

What is the easiest way to pretty print (a.k.a. formatted) a org.w3c.dom.Document to stdout?

Answer 1

private void printNode(Node rootNode, String spacer) {
    System.out.println(spacer + rootNode.getNodeName() + " -> " + rootNode.getNodeValue());
    NodeList nl = rootNode.getChildNodes();
    for (int i = 0; i < nl.getLength(); i++)
        printNode(nl.item(i), spacer + "   ");
}