final Object result = Executer.getInstance().doTask(rpc, socket.getInetAddress().getHostAddress(), socket.getInetAddress().getAddress());
answer = gson.toJson(result);
task return customer with call time. but after gson convert data to json call time is null. what is the problem?
finally I found the solution. I got null because of QSystem does not store customer call time to database. To handle this problem just add a new column for call time.
