There are two different ways to send messages to any Camel Endpoint from a POJO
e.g. lets send a message to the foo.bar queue in ActiveMQ at some point
The downside of this is that your code is now dependent on a Camel API, the ProducerTemplate. The next section describes how to remove this
Hiding the Camel APIs from your code using @Produce
We recommend Hiding Middleware APIs from your application code so the next option might be more suitable.
Here Camel will automatically inject a smart client side proxy at the @Produce annotation - an instance of the MyListener instance. When we invoke methods on this interface the method call is turned into an object and using the Camel Spring Remoting mechanism it is sent to the endpoint - in this case the ActiveMQ endpoint to queue foo; then the caller blocks for a response.
If you want to make asynchronous message sends then use an @InOnly annotation on the injection point.