Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;

public class Main {
    /**
     * @param n
     *            the node
     * @return the first element in the ancestor tree of {@code n}. If
     *         {@code n} is an {@link Element}, {@code n} is returned. If
     *         {@code n} is <code>null</code>, this method returns
     *         <code>null</code>.
     */
    public static Element getAncestorElement(Node n) {
        if (n == null) {
            return null;
        }
        if (n.getNodeType() == Node.ELEMENT_NODE) {
            return (Element) n;
        }
        Node parent = n.getParentNode();
        if (parent == null) {
            Document doc = (Document) (n instanceof Document ? n : n.getOwnerDocument());
            return doc == null ? null : doc.getDocumentElement();
        }
        return getAncestorElement(parent);
    }
}