Zipping

    private static void cacheZippingFromExistFile() throws IOException {
        final String zipCacheFileName = CACHE_FILE_NAME + ".zip";
        try (ZipOutputStream zout = new ZipOutputStream(new FileOutputStream(zipCacheFileName));
             FileInputStream fis = new FileInputStream(CACHE_FILE_NAME)) {
            final ZipEntry entry = new ZipEntry("H8Cache");
            zout.putNextEntry(entry);
            final byte[] buffer = new byte[fis.available()];
            fis.read(buffer);
            zout.write(buffer);
            zout.closeEntry();
        }
    }