public long getJMSDeliveryTime() throws JMSException
Returns the message's delivery time.
When a message is sent, the JMSDeliveryTime header field is left unassigned.
After completion of the send or publish method, it holds the minimum delivery time time
of the message. This is the sum of the delivery delay value specified by the client and
the GMT at the time of the send or publish.
When the delivery delay is specified as zero, JMSDeliveryTime is set to zero to indicate
that there is no delivery delay.
A provider must not deliver a message before the defined delivery time has been reached.