This invaluable resource details the architecture of the Enterprise JavaBeans component model and the Java Message Service (JMS) so you understand the ideas behind asynchronous and parallel processing provided through message-driven beans.
This is the JavaBeans API specification. It describes the core specification for the JavaBeans component architecture. This version (1.01) of the specification describes the JavaBeans APIs that are present in JDK 1.1. These included some very minor