/* Copyright 2002, 2003, 2018 Elliotte Rusty Harold
This library is free software; you can redistribute it and/or modify
it under the terms of version 2.1 of the GNU Lesser General Public
License as published by the Free Software Foundation.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library. If not, see
* Demonstrates walking the element hierarchy of * an XML document. *
* * @author Elliotte Rusty Harold * @version 1.3.0 * */ public class ElementLister { public static void main(String[] args) { if (args.length == 0) { System.out.println("Usage: java nu.xom.samples.ElementLister URL"); return; } Builder builder = new Builder(); try { Document doc = builder.build(args[0]); Element root = doc.getRootElement(); listChildren(root, 0); } // indicates a well-formedness error catch (ParsingException ex) { System.out.println(args[0] + " is not well-formed."); System.out.println(ex.getMessage()); } catch (IOException ex) { System.out.println(ex); } } public static void listChildren(Element current, int depth) { printSpaces(depth); System.out.println(current.getQualifiedName()); for (Element child : current.getChildElements()) { listChildren(child, depth+1); } } private static void printSpaces(int n) { for (int i = 0; i < n; i++) { System.out.print(' '); } } }