tencent cloud

Message msg = new Message("test-topic", ("message content").getBytes(StandardCharsets.UTF_8));
// Set the message to be sent at 00:00:00 on 2021-10-01
try {
    long timeStamp = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse("2021-10-01 00:00:00").getTime();
    // Set `__STARTDELIVERTIME` into the property of `msg`
    msg.putUserProperty("__STARTDELIVERTIME", String.valueOf(timeStamp));
    SendResult result = producer.send(msg);
    System.out.println("Send delay message: " + result);
} catch (ParseException e) {

Message msg = new Message("test-topic", ("message content").getBytes(StandardCharsets.UTF_8));

// Set the message to be sent after 10 seconds
long delayTime = System.currentTimeMillis() + 10000;
// Set `__STARTDELIVERTIME` into the property of `msg`
msg.putUserProperty("__STARTDELIVERTIME", String.valueOf(delayTime));

SendResult result = producer.send(msg);
System.out.println("Send delay message: " + result);