Java™ Message Service API Tutorial and Reference: Messaging for the J2EE™ Platform

3.4. Message Producers

A message producer is an object created by a session and is used for sending messages to a destination. The PTP form of a message producer implements the QueueSender interface. The pub/sub form implements the TopicPublisher interface.

For example, you use a QueueSession to create a sender for the queue myQueue, and you use a TopicSession to create a publisher for the topic myTopic:

QueueSender queueSender = queueSession.createSender(myQueue);

TopicPublisher topicPublisher =
  topicSession.createPublisher(myTopic);

You can create an unidentified producer by specifying null as the argument to createSender or createPublisher. With an unidentified producer, you can wait to specify which destination to send the message to until ...