The container fires an event of this type for each enabled session bean, before registering the Bean object.

If any observer method of a ProcessSessionBean event throws an exception, the exception is treated as a definition error by the container.

Note that the type parameter of the super-interface of ProcessSessionBean is Object as ProcessBean allows you access to the Bean, which in turn allows you to instantiate an instance, which, for interface-view EJBs will not be an instance of X.