private static void walk(File path) throws IOException
    {
        if(path.isDirectory())
        {
            for(File child : path.listFiles())
            {
                walk(child);
            }
        }
        else if(path.getName().endsWith(".jar"))
        {
            byte[] xz = compress(path);
            // System.exit(0);
            decompress(path, xz, CHECKSUMS);
        }
    }