19.4. Building, Deploying, and Running the Examples
Coding an EJB is only half the fun. Deploying it introduces several new concepts and complexities. We've already used JAR and WAR files; for EJBs, we introduce two new variations on the theme. An EJB-JAR file is a JAR file that contains one or more Enterprise JavaBeans. An EAR (Enterprise ARchive) file is a file that can contain multiple components, which are themselves archive files—so, an EAR might contain several EJB-JARs, plus a WAR file that contains the user interface (servlet and JSP) components of the application.
We'll begin by packaging our bean in an EJB-JAR file. Each EJB-JAR file requires a deployment descriptor. The deployment descriptor for an EJB-JAR file is named ejb-jar.xml ...
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