Java Utililty Methods XML First Child Element

List of utility methods to do XML First Child Element

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Description

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

Method

ElementgetFirstChildByRegex(Element ele, String pattern)
get First Child By Regex 
NodeList nl = ele.getChildNodes();
for (int i = 0; i < nl.getLength(); i++) {
    Node node = nl.item(i);
    if (node instanceof Element && getLocalName(node).matches(pattern)) {
        return (Element) node;
return null;
...
ElementgetFirstChildByTagName(Element parent, String tagName)
get First Child By Tag Name 
NodeList nodes = parent.getChildNodes();
for (int i = 0; i < nodes.getLength(); i++) {
    Node node = nodes.item(i);
    if (node.getNodeType() == Node.ELEMENT_NODE && node.getNodeName().equals(tagName)) {
        return (Element) node;
return null;
...
ElementgetFirstChildByTagName(Node parent, String tagName)
get First Child By Tag Name 
List<Element> children = getChildrenByTagName(parent, tagName);
return (children.size() == 0) ? null : children.get(0);
NodegetFirstChildByTagNameNS(Node contextNode, String nsuri, String tag)
returns the first child of the contextnode which has the specified tagname and namespace uri regardless of the depth in the tree. 
Node n = null;
if (contextNode.getNodeType() == Node.DOCUMENT_NODE) {
    n = ((Document) contextNode).getDocumentElement();
    if (!(n.getNamespaceURI().equals(nsuri) && n.getNodeName().equals(tag))) {
        n = null;
} else {
    NodeList nodes = ((Element) contextNode).getElementsByTagNameNS(nsuri, tag);
...
NodegetFirstChildByType(Element element, int nodeType)
get First Child By Type 
NodeList children = element.getChildNodes();
int childCount = children.getLength();
for (int i = 0; i < childCount; i++) {
    Node child = children.item(i);
    if (child.getNodeType() == nodeType) {
        return child;
return null;
NodegetFirstChildByType(Element element, short nodeType)
get First Child By Type 
NodeList childNodes = element.getChildNodes();
for (int i = 0; i < childNodes.getLength(); i++) {
    if (childNodes.item(i).getNodeType() == nodeType) {
        return childNodes.item(i);
return null;
ElementgetFirstChildElement(@Nonnull final Node aStartNode)
Get the first direct child element of the passed element. 
final NodeList aNodeList = aStartNode.getChildNodes();
final int nLen = aNodeList.getLength();
for (int i = 0; i < nLen; ++i) {
    final Node aNode = aNodeList.item(i);
    if (aNode.getNodeType() == Node.ELEMENT_NODE)
        return (Element) aNode;
return null;
...
ElementgetFirstChildElement(Element e)
Get the first child of e which is an element, or null if there is no such element. 
Node n = e.getFirstChild();
while (n != null && n.getNodeType() != Node.ELEMENT_NODE) {
    n = n.getNextSibling();
return (Element) n;
ElementgetFirstChildElement(Element e)
Gets the first child element. 
if (e != null) {
    NodeList children = e.getChildNodes();
    for (int i = 0; i < children.getLength(); i++) {
        Node node = children.item(i);
        if (node.getNodeType() == Node.ELEMENT_NODE) {
            return (Element) node;
return null;
ElementgetFirstChildElement(Element e)
Get the first child of e which is an element, or null if there is no such element. 
Node n = e.getFirstChild();
while (n != null && n.getNodeType() != Node.ELEMENT_NODE) {
    n = n.getNextSibling();
return (Element) n;