long lastAckTime = subscriber.getTimeOfLastMessageAck(); long timeDelta = System.currentTimeMillis() - lastAckTime;
long lastAckTime = subscriber.getTimeOfLastMessageAck(); long timeDelta = System.currentTimeMillis() - lastAckTime;
long lastAckTime = subscriber.getTimeOfLastMessageAck(); long timeDelta = System.currentTimeMillis() - lastAckTime;
long lastAckTime = subscriber.getTimeOfLastMessageAck(); long timeDelta = System.currentTimeMillis() - lastAckTime;