final URL classURL = ResourceUtil.getResource(classFilePath);
        final URL jarURL = new File(JarFileUtil.toJarFilePath(classURL)).toURI().toURL();
        ResourceTraversalUtil.forEach(new ZipInputStream(jarURL.openStream()), (ResourceHandler) (path, is) -> {
            try {
                if (count < 10) {
                    System.out.println(path);
                }
                assertThat(path, is(notNullValue()));

        final URL classURL = ResourceUtil.getResource(classFilePath);
        final URL jarURL = new File(JarFileUtil.toJarFilePath(classURL)).toURI().toURL();
        ClassTraversalUtil.forEach(new ZipInputStream(jarURL.openStream()), (ClassHandler) (packageName, shortClassName) -> {
            if (count < 10) {
                System.out.println(ClassUtil.concatName(packageName, shortClassName));
            }

                    if (file.exists()) {
                        reloadableFile = file;
                    }
                    reader = new BufferedReader(new InputStreamReader(path.toUri().toURL().openStream(), StandardCharsets.UTF_8));
                } catch (final Exception e) {
                    throw new IllegalArgumentException("Failed to read " + filePath, e);
                }

    public static InputStream getResourceAsStream(final String path, final String extension) {
        assertArgumentNotEmpty("path", path);

        final URL url = getResource(path, extension);
        return URLUtil.openStream(url);
    }

    /**
     * コンテキストクラスローダからリソースを検索してストリームとして返します。 リソースが見つからなかった場合は<code>null</code>
     * を返します。
     *
     * @param path
     *            リソースのパス。{@literal null}や空文字列であってはいけません

     */
    public static int copy(final URL in, final OutputStream out) {
        assertArgumentNotNull("in", in);
        assertArgumentNotNull("out", out);

        final InputStream is = URLUtil.openStream(in);
        try {
            if (out instanceof FileOutputStream) {
                return copyInternal(wrap(is), (FileOutputStream) out);
            }
            return copyInternal(wrap(is), wrap(out));

            this.zipUrl = zipUrl;
            this.prefix = prefix;
        }

        private void loadFromZip(final URL zipUrl) {
            final ZipInputStream zis = new ZipInputStream(URLUtil.openStream(zipUrl));
            try {
                ZipEntry entry = null;
                while ((entry = ZipInputStreamUtil.getNextEntry(zis)) != null) {
                    entryNames.add(entry.getName());

        final URL url = ResourceUtil.getResource(path);
        if (url.getProtocol().equals("file")) {
            return readText(URLUtil.toFile(url), encoding);
        }
        final InputStream is = URLUtil.openStream(url);
        try {
            final Reader reader = ReaderUtil.create(new BufferedInputStream(is, DEFAULT_BUF_SIZE), encoding);
            return read(reader, DEFAULT_BUF_SIZE);
        } finally {

     */
    public static void load(final Properties props, final URL url) {
        assertArgumentNotNull("props", props);
        assertArgumentNotNull("url", url);

        final InputStream in = URLUtil.openStream(url);

        try {
            props.load(in);
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        } finally {
            CloseableUtil.close(in);
        }

    /**
     * URLをオープンして{@link InputStream}を返します。
     *
     * @param url
     *            URL。{@literal null}であってはいけません
     * @return URLが表すリソースを読み込むための{@link InputStream}
     */
    public static InputStream openStream(final URL url) {
        assertArgumentNotNull("url", url);

        try {
            final URLConnection connection = url.openConnection();
            connection.setUseCaches(false);