Java Utililty Methods XML Element Root

NodeList children = root.getOwnerDocument().getChildNodes();
int pos = 0;
for (int i = 0; i < children.getLength(); i++) {
    Node n = children.item(i);
    if (n != root) {
        String s = n.getNodeValue();
        if (s != null) {
            pos += s.length();
...

Element root = document.getDocumentElement();
Element component = findComponentElement(root);
return component != null ? component : root;

DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setNamespaceAware(true);
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.parse(pomFile);
Element root = document.getDocumentElement();
return root;

return getAsDocument(str).getDocumentElement();

NodeList nodes = doc.getElementsByTagName(nodeName);
if (nodes == null || nodes.getLength() == 0)
    return (null);
return (nodes.item(0));

NodeList nodeList = document.getChildNodes();
return nodeList.item(0);

final Document document = parse(xmlContent);
return document.getDocumentElement();

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
DocumentBuilder builder = dbf.newDocumentBuilder();
Document document = builder.parse(new InputSource(new StringReader(xml)));
return document.getDocumentElement().getTagName();