public void openURL(URL url) {
        try {
            Metadata metadata = new Metadata();
            try (TikaInputStream stream = TikaInputStream.get(url, metadata)) {
                handleStream(stream, metadata);
            }
        } catch (Throwable t) {
            handleError(url.toString(), t);
        }
    }
Main method. Sets the Swing look and feel to the operating system
settings, and starts the Tika GUI with an {@link AutoDetectParser}
instance as the default parser.

@param args ignored
@throws Exception if an error occurs
tika-app/src/main/java/org/apache/tika/gui/TikaGUI.java