FTPClient client = new FTPClient();

        try {
            client.connect("ftp.javacodegeeks.com");
            client.login("anonymous", "");
            FTPFile[] files = client.listFiles();
            for (FTPFile ftpFile : files) {
                if (ftpFile.getType() == FTPFile.FILE_TYPE) {
                    System.out.println("File: " + ftpFile.getName()
                            + "size-> " + FileUtils.byteCountToDisplaySize(
                                    ftpFile.getSize()));
                }
            }

            client.logout();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                client.disconnect();
            } catch (IOException e) {
                e.printStackTrace();
            }

        }