Start the connection to which this consumer’s session belongs.
The connection’s start method
begins the flow of messages from the message broker to your message consumer:
Once the connection is started, the Message Queue client runtime will
call your message listener’s onMessage method
each time it has a message to deliver to this consumer.
that no messages are lost before your consumer is ready to receive them, it
is important not to start the connection until after you have created the
message listener and associated it with the consumer. If the connection is
already started, you should stop it before creating an asynchronous consumer,
then start it again when the consumer is ready to begin processing.
a consumer’s message listener to null removes any
message listener previously associated with it:
The consumer’s getMessageListener method
returns its current message listener (or null if there
MyMessageListener myListener = myConsumer.getMessageListener();