get Child Elements By Name from XML Element - Java XML

Java examples for XML:XML Element Child

  1. HOME
  2. Java
  3. XML
  4. XML Element Child

Description

get Child Elements By Name from XML Element

Demo Code


import java.util.ArrayList;
import java.util.List;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class Main{
    public static Element[] getChildElementsByName(Element parent,
            String name) throws XMLHelperException {
        Node[] nodes = getChildNodesByName(parent, name);
        Element[] elements = new Element[nodes.length];
        for (int i = 0; i < nodes.length; i++)
            elements[i] = toElement(nodes[i]);
        return elements;
    }/*w w  w  .java  2s .  co  m*/
    public static Node[] getChildNodesByName(Element parent, String name) {
        List<Node> nodeList = new ArrayList<Node>();

        NodeList childNodes = parent.getChildNodes();
        int length = childNodes.getLength();
        for (int i = 0; i < length; i++) {
            Node current = childNodes.item(i);
            if (current.getNodeName().equals(name))
                nodeList.add(current);
        }

        Node[] nodes = new Node[nodeList.size()];
        nodeList.toArray(nodes);
        return nodes;
    }
    public static Element toElement(Node node) throws XMLHelperException {
        if (node.getNodeType() != Node.ELEMENT_NODE)
            throw new XMLHelperException("\"" + node.getNodeName()
                    + "\" must be an element node");
        return (Element) node;
    }
}

Related Tutorials