public static  void count(String parserWrapperName,
    String uri) 
{
    //
    // Public static methods
    //
        try {
            DOMParserWrapper parser =
            (DOMParserWrapper)Class.forName(parserWrapperName).newInstance();
            DOMCount counter = new DOMCount();
            long before = System.currentTimeMillis();
            parser.setFeature( "http://apache.org/xml/features/dom/defer-node-expansion",
                               setDeferredDOM );
            parser.setFeature( "http://xml.org/sax/features/validation", 
                               setValidation );
            parser.setFeature( "http://xml.org/sax/features/namespaces",
                               setNameSpaces );
            parser.setFeature( "http://apache.org/xml/features/validation/schema",
                               setSchemaSupport );
            Document document = parser.parse(uri);
            counter.traverse(document);
            long after = System.currentTimeMillis();
            counter.printResults(uri, after - before);
        } catch (org.xml.sax.SAXParseException spe) {
        } catch (org.xml.sax.SAXNotRecognizedException ex ){
        } catch (org.xml.sax.SAXNotSupportedException ex ){
        } catch (org.xml.sax.SAXException se) {
            if (se.getException() != null)
                se.getException().printStackTrace(System.err);
            else
                se.printStackTrace(System.err);
        } catch (Exception e) {
            e.printStackTrace(System.err);
        }
}

Counts the resulting document tree.

 public static  void main(String[] argv) 
{
        Arguments argopt = new Arguments();
        argopt.setUsage( new String[] {
                             "usage: java dom.DOMCount (options) uri ...",
                             "",
                             "options:",
                             "  -p name  Specify DOM parser wrapper by name.",
                             "  -n | -N  Turn on/off namespace [default=on]",
                             "  -v | -V  Turn on/off validation [default=on]",
                             "  -s | -S  Turn on/off Schema support [default=on]",
                             "  -d | -D  Turn on/off deferred DOM [default=on]",
                             "  -h       This help screen."} );
        // is there anything to do?
        if (argv.length == 0) {
            argopt.printUsage();
            System.exit(1);
        }
        // vars
        String  parserName = DEFAULT_PARSER_NAME;
        argopt.parseArgumentTokens(argv , new char[] { 'p"} );
        int   c;
        String arg = null; 
        while ( ( arg =  argopt.getlistFiles() ) != null ) {
outer:
            while ( (c =  argopt.getArguments()) != -1 ){
                switch (c) {
                case 'v":
                    setValidation = true;
                    //System.out.println( "v" );
                    break;
                case 'V":
                    setValidation = false;
                    //System.out.println( "V" );
                    break;
                case 'N":
                    setNameSpaces = false;
                    break;
                case 'n":
                    setNameSpaces = true;
                    break;
                case 'p":
                    //System.out.println('p');
                    parserName = argopt.getStringParameter();
                    //System.out.println( "parserName = " + parserName );
                    break;
                case 'd":
                    setDeferredDOM = true;
                    break;
                case 'D":
                    setDeferredDOM = false;
                    break;
                case 's":
                    //System.out.println("s" );
                    setSchemaSupport = true;
                    break;
                case 'S":
                    //System.out.println("S" );
                    setSchemaSupport = false;
                    break;
                case '?":
                case 'h":
                case '-":
                    argopt.printUsage();
                    System.exit(1);
                    break;
                case  -1:
                    //System.out.println( "-1" );
                    break outer;
                default:
                    break;
                }
            }
            count(parserName, arg ); //count uri
        }
}

Main program entry point.

 public  void printResults(String uri,
    long time) 
{
        // filename.xml: 631 ms (4 elems, 0 attrs, 78 spaces, 0 chars)
        System.out.print(uri);
        System.out.print(": ");
        System.out.print(time);
        System.out.print(" ms (");
        System.out.print(elements);
        System.out.print(" elems, ");
        System.out.print(attributes);
        System.out.print(" attrs, ");
        System.out.print(ignorableWhitespace);
        System.out.print(" spaces, ");
        System.out.print(characters);
        System.out.print(" chars)");
        System.out.println();
}

Prints the results.

 public  void traverse(Node node) 
{
        // is there anything to do?
        if (node == null) {
            return;
        }
        int type = node.getNodeType();
        switch (type) {
        // print document
        case Node.DOCUMENT_NODE: {
                elements            = 0;
                attributes          = 0;
                characters          = 0;
                ignorableWhitespace = 0;
                traverse(((Document)node).getDocumentElement());
                break;
            }
            // print element with attributes
        case Node.ELEMENT_NODE: {
                elements++;
                NamedNodeMap attrs = node.getAttributes();
                if (attrs != null) {
                    attributes += attrs.getLength();
                }
                NodeList children = node.getChildNodes();
                if (children != null) {
                    int len = children.getLength();
                    for (int i = 0; i <  len; i++) {
                        traverse(children.item(i));
                    }
                }
                break;
            }
            // handle entity reference nodes
        case Node.ENTITY_REFERENCE_NODE: {
                NodeList children = node.getChildNodes();
                if (children != null) {
                    int len = children.getLength();
                    for (int i = 0; i <  len; i++) {
                        traverse(children.item(i));
                    }
                }
                break;
            }
            // print text
        case Node.CDATA_SECTION_NODE: {
                characters += node.getNodeValue().length();
                break;
            }
        case Node.TEXT_NODE: {
                if (node instanceof TextImpl) {
                    if (((TextImpl)node).isIgnorableWhitespace())
                        ignorableWhitespace += node.getNodeValue().length();
                    else
                        characters += node.getNodeValue().length();
                } else
                    characters += node.getNodeValue().length();
                break;
            }
        }
}

Traverses the specified node, recursively.