Java Utililty Methods XML Node Find

List of utility methods to do XML Node Find

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Description

The list of methods to do XML Node Find are organized into topic(s).

Method

NodefindElementByTag(Set nodes, String tag)
find Element By Tag 
Node result = null;
for (Node child : nodes) {
    if (tag.equals(child.getNodeName())) {
        result = child;
        break;
return result;
...
ElementfindElementNodeByName(Node node, String name)
find Element Node By Name 
if (node == null) {
    return null;
NodeList nodeList = node.getChildNodes();
if (nodeList == null || nodeList.getLength() == 0) {
    return null;
for (int i = 0; i < nodeList.getLength(); i++) {
...
ListfindElements(Node fromnode, String name)
Simple DOM elements finder. 
NodeList nodelist = fromnode.getChildNodes();
List<Element> list = new ArrayList<Element>();
for (int i = 0; i < nodelist.getLength(); i++) {
    Node node = nodelist.item(i);
    if (node.getNodeType() == Node.ELEMENT_NODE) {
        if (name.equals(node.getNodeName())) {
            list.add((Element) node);
        list.addAll(findElements(node, name));
return list;
voidfindElementsByName(Node node, List elements, String name)
find elements by name. 
NodeList children = node.getChildNodes();
for (int i = 0; i < children.getLength(); i++) {
    Node child = children.item(i);
    if (name.equalsIgnoreCase((child.getNodeName()))) {
        elements.add(child);
    } else {
        findElementsByName(child, elements, name);
NodefindNode(Document source, Element n)
Find a node in a DOM. 
String name = n.getTagName();
NodeList list = source.getElementsByTagName(name);
int len = list.getLength();
if (len == 0)
    return null;
Element sn;
for (int i = 0; i < len; i++) {
    sn = (Element) list.item(i);
...
NodefindNode(Node aNode, String aName)
------------------------------------------------------------ Finds the first node of a given type 
String name = aNode.getNodeName() != null ? aNode.getNodeName().trim() : "";
if (aName.equalsIgnoreCase(name)) {
    return aNode;
NodeList list = aNode.getChildNodes();
for (int i = 0; i < list.getLength(); i++) {
    Node child = list.item(i);
    if (child != null) {
...
NodefindNode(Node node, String nodeName)
Find node by name recursively. 
if (nodeName.equals(node.getNodeName()))
    return node;
org.w3c.dom.NodeList children = node.getChildNodes();
for (int i = 0; i < children.getLength(); i++) {
    Node ret = findNode(children.item(i), nodeName);
    if (ret != null)
        return ret;
return null;
NodefindNode(Node rootNode, String nodeName)
find Node 
if (rootNode.getLocalName().equalsIgnoreCase(nodeName))
    return rootNode;
NodeList childrenList = rootNode.getChildNodes();
if (childrenList.getLength() > 0) {
    for (int i = 0; i < childrenList.getLength(); i++) {
        Node node = childrenList.item(i);
        if (node.getNodeType() == Node.ELEMENT_NODE) {
            Node findElement = findNode(node, nodeName);
...
NodefindNodeByAttribute(Document document, String tagName, String attributeName, String attributeValue)
find Node By Attribute 
Node foundNode = null;
NodeList nodes = document.getElementsByTagName(tagName);
for (int i = 0; i < nodes.getLength(); i++) {
    Node node = nodes.item(i);
    for (int j = 0; j < node.getAttributes().getLength(); j++) {
        Node attribute = node.getAttributes().item(j);
        if (attribute.getNodeName().equals(attributeName)
                && attribute.getNodeValue().equals(attributeValue)) {
...
NodefindNodeByName(Document doc, String pathExpression)
Searches for a node within a DOM document with a given node path expression. 
final StringTokenizer tok = new StringTokenizer(pathExpression, ".");
final int numToks = tok.countTokens();
NodeList elements;
if (numToks == 1) {
    elements = doc.getElementsByTagNameNS("*", pathExpression);
    return elements.item(0);
String element = pathExpression.substring(pathExpression.lastIndexOf('.') + 1);
...