Instant Apache ActiveMQ Messaging Application Development How-to

Event processing with topics (Simple)

In this recipe we will explore how to use JMS topics as event channels by looking at a sample stock price update service and a simple consumer of those events.

Getting ready

For this recipe we will use the examples named event-publisher and event-subscriber that implement a simple stock price ticker application.

How to do it...

To run the sample for this recipe you will need to perform the following steps:

1. Open a terminal and start a broker.
2. Open two more terminals, change to the directory where the event-subscriber file is located in each, and run the consumer by typing mvn compile exec:java. (You can use Ctrl + C to terminate this application or it will stop on its own after five minutes.)
3. Open a fourth terminal, ...