public static void RemoveOldestTask() { JSONToQuery parsedJson = new Gson().fromJson(BuforZadan.nextTask, JSONToQuery.class); buforZad.remove(0); nextTask = ""; // i informacja do bazy ze wykonano String execQuery = "DELETE FROM sms.tasks WHERE tasks.id_task='" + parsedJson.getId() + "';"; // System.out.println(execQuery); try { dba.removeDataBase(execQuery); } catch (Exception ex) { ex.printStackTrace(); } }