The JMS API defines ten levels of priority value, with 0 as the lowest priority and 9 as the highest. In addition, clients should consider priorities 0-4 as gradations of normal priority and priorities 5-9 as gradations of expedited priority.
The JMS API does not require that a provider strictly implement priority ordering of messages; however, it should do its best to deliver expedited messages ahead of normal messages.
| Exception Type | Condition |
|---|---|
| MessageException | if the JMS provider fails to get the message priority due to some internal error. |
IMessage Interface | WebLogic.Messaging Namespace