ConnectionPool connectionPool = new ConnectionPool(); Connection connection = connectionPool.getConnection(); connection.sendData(data); connectionPool.releaseConnection(connection); String jsonData = JsonConverter.convertToJson(data); network.sendData(jsonData); String receivedData = network.receiveData(); Data parsedData = JsonConverter.convertFromJson(receivedData); ExecutorService executorService = Executors.newFixedThreadPool(5); executorService.submit(() -> { performDataTransfer(connection, data); }); executorService.shutdown();