Java Utililty Methods XML Element First

List of utility methods to do XML Element First

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Description

The list of methods to do XML Element First are organized into topic(s).

Method

ElementgetFirstElement(Document document)
get first "real" element (ie not the document-rootelement, but the next one 
Element workelement = null;
if (document.getDocumentElement() != null) {
    org.w3c.dom.Node tmp = document.getDocumentElement().getFirstChild();
    while (tmp != null) {
        tmp = tmp.getNextSibling();
        if (tmp.getNodeType() == org.w3c.dom.Node.ELEMENT_NODE) {
            workelement = (Element) tmp;
            break;
...
ElementgetFirstElement(Document document, String tagName)
This method returns the first element from the document. 
NodeList nodes = document.getElementsByTagName(tagName);
if (nodes != null && nodes.getLength() != 0) {
    return (Element) nodes.item(0);
} else {
    return null;
ElementgetFirstElement(Element documentElement)
get First Element 
Object node = null;
NodeList childs = documentElement.getChildNodes();
for (int i = 0; i < childs.getLength(); i++) {
    node = childs.item(i);
    if (node instanceof Element)
        return (Element) node;
throw new RuntimeException("Can't find any Element");
...
ElementgetFirstElement(String name, Element root)
get First Element 
NodeList list = root.getElementsByTagName(name);
if (list != null) {
    return (Element) list.item(0);
} else
    return null;
OptionalgetFirstElementByTagName(Document doc, String tagName)
Returns the first element matching the given tag name. 
NodeList nodes = doc.getElementsByTagName(tagName);
return nodes.getLength() > 0 ? Optional.ofNullable((Element) nodes.item(0)) : Optional.empty();
ElementgetFirstElementByTagName(Document document, String name)
get First Element By Tag Name 
return getFirstElement(document.getElementsByTagName(name));
ElementgetFirstElementByTagName(Document document, String tag)
get First Element By Tag Name 
NodeList nodeList = document.getElementsByTagName(tag);
if (nodeList == null) {
    p("no list of elements with tag=" + tag);
    return null;
Element element = (Element) nodeList.item(0);
if (element == null) {
    p("no element for tag=" + tag);
...
StringgetFirstElementText(Document document, String tagName)
This method returns the first element text from the document. 
Element element = getFirstElement(document, tagName);
if (element != null) {
    return getText(element);
} else {
    return null;
ElementgetFirstImageTransformElement(final Document doc)
Finds the first Transform Element with an Image child node. 
final NodeList transforms = doc.getElementsByTagName("Transform");
for (int i = 0; i < transforms.getLength(); ++i) {
    final Element transform = (Element) transforms.item(i);
    final NodeList children = transform.getChildNodes();
    for (int j = 0; j < children.getLength(); ++j) {
        if (children.item(j).getNodeName().equals("Image")) {
            return transform;
return null;
NodegetFirstNode(Document doc, String xPathExpression)
Get first node on a Document doc, give a xpath Expression 
try {
    XPathFactory xPathfactory = XPathFactory.newInstance();
    XPath xpath = xPathfactory.newXPath();
    XPathExpression expr;
    expr = xpath.compile(xPathExpression);
    NodeList nl = (NodeList) expr.evaluate(doc, XPathConstants.NODESET);
    return nl.item(0);
} catch (XPathExpressionException e) {
...