Whether a message should be persisted when it is sent/published on the jms server. The options are:

• Persistent - The message is persisted

• NonPersistent - The message is not persisted

NOTE: Persistent messages sent to a TemporaryQueue, TemporaryTopic or

Non Durable Subscription are not persisted

It is a common mistake to try to set it on the message. This has no effect.

QueueSender sender = session.createSender(myQueue);
Message message = session.createTextMessage("hello");
int priority = 4;

WRONG WAY:

message.setDeliveryMode(DeliveryMode.NON_PERSISTENT); // THIS DOES NOT WORK!
sender.send(message);

CORRECT WAY:

sender.send(message, DeliveryMode.NON_PERSISTENT, priority, 0);