The JJack manual explains in detail how JJack clients are deployed. It covers the system environment and software components needed to run JJack clients, how the classpath must be set, and the configuration options of the JJack shell application.
The JJack example clients documentation deals with the client implementations that are included in the JJack installation archive. While mainly intended to be real-world examples about programming JJack clients, the example clients could also be used for productive audio processing.
Interconnecting JJack clients is achieved by a JavaBeans-compatible event mechanism. It is possible to configure and interconnect multiple JJack clients inside a JavaBeans-development-environment like Sun's BeanBuilder. All clients combined inside one Java virtual machine appear as a single native client to the JACK daemon.
A brief entry-point if you are going to develop your own JJack clients.
The auto-generated Javadoc API documentation is the detailed source of information for writing JJack clients.
The JJack API at a glance.
Paper about JJack published on the Linux Audio Conference 2007.
Slides from the Linux Audio Conference 2007.