public static  void main(String[] argv) 
{
        Arguments argopt = new Arguments();
        argopt.setUsage( new String[] 
                         { "usage: java dom.DOMFilter (options) uri ...","",
                             "options:",
                             "  -p name  Specify DOM parser wrapper by name.",
                             "  -e name  Specify element name to search for. Default is \"*\".",
                             "  -a name  Specify attribute name of specified elements.",
                             "  -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;
        String elementName   = "*"; // all elements
        String attributeName = null;
        /////
        argopt.parseArgumentTokens(argv , new char[] { 'p", 'e", 'a"} );
        int   c;
        String arg = null; 
        while ( ( arg =  argopt.getlistFiles() ) != null ) {
outer:
            while ( (c =  argopt.getArguments()) != -1 ){
                switch (c) {
                case 'v":
                    setValidation = true;
                    break;
                case 'V":
                    setValidation = false;
                    break;
                case 'N":
                    setNameSpaces = false;
                    break;
                case 'n":
                    setNameSpaces = true;
                    break;
                case 'p":
                    parserName = argopt.getStringParameter();
                    break;
                case 'd":
                    setDeferredDOM = true;
                    break;
                case 'D":
                    setDeferredDOM = false;
                    break;
                case 's":
                    setSchemaSupport = true;
                    break;
                case 'S":
                    setSchemaSupport = false;
                    break;
                case 'e":
                    elementName = argopt.getStringParameter();
                    break;
                case 'a":
                    attributeName  = argopt.getStringParameter();
                    break;
                case '?":
                case 'h":
                case '-":
                    argopt.printUsage();
                    System.exit(1);
                    break;
                case -1:
                    break outer;
                default:
                    break;
                }
            }
            // print uri
            System.err.println(arg+':");
            print(parserName, arg, elementName, attributeName);
        }
}

Main program entry point.

 public static  void print(String parserWrapperName,
    String uri,
    String elementName,
    String attributeName) 
{
    //
    // Public static methods
    //
        try {
            // parse document
            DOMParserWrapper parser = 
            (DOMParserWrapper)Class.forName(parserWrapperName).newInstance();
            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);
            // get elements that match
            NodeList elements = document.getElementsByTagName(elementName);
            // print nodes
            print(elements, attributeName);
        } catch (Exception e) {
            e.printStackTrace(System.err);
        }
}

Prints the specified elements in the given document.