Jini™ Specifications, The, Second Edition

EM.1. Introduction

The The Jini Technology Core Platform Specification, “Distributed Events” states the ability to interpose third-party objects, or “agents,” into an event notification chain as one of its design goals. This specification also describes a notification mailbox object, which stores and forwards event notifications on behalf of other objects, as an example of a useful third-party agent. These mailbox objects can be particularly helpful for objects that need more control over how and when they receive event notifications.

For example, it would be impossible to send event notifications to a transient entity that has detached itself from a system of Jini technology-enabled services and/or devices (Jini system). In such a situation ...