We use multiple archive formats for various J2EE components—.jar, .war, .ear, and .rar are few amongst them. Now, JBI specification recognizes .zip as a valid archive format for JBI components. SUs and SAs are packaged as valid .zip files and are deployed into JBI compliant containers. In this chapter, we have seen how to write code from scratch, package it into standard JBI formats, and deploy it to the ESB run time. We will follow similar packaging for most of our samples in the subsequent chapters.

The next chapter will teach how to custom code JBI components on our own, so that they can take part in the message exchanges happening through the JBI bus.