In this section, we will look at creating a new GBean and deploying the GBean to the server. Remember that a GBean is the basic unit in Geronimo that may provide a service or is used to wrap services deployed in the kernel. We will now develop a GBean, and in the process, we will look at various aspects of the GBean, such as the attributes, references, operations, constructor, interfaces, lifecycle management, dependencies, and so on.
A GBean Java class typically implements a service interface and exposes the operations from the service interface or provides lifecycle operations such as start or stop to initialize and shutdown the service. A GBean can use lifecycle management by implementing the GBeanLifecycle interface. The GBean is configured by attributes and references to other GBeans. Irrespective of what the Java class defines, the GBean is only identified by the structure defined by the GBean's metadata GBeanInfo. The Java class defining a GBean should make...