Using Events to Communicate with Other Components
The whole idea behind the JavaBeans component model is to provide a way to create reusable components. To do this, Beans must be able to communicate with the other Beans in their environment and with their container. This is accomplished by means of Listener interfaces. You've already seen some of this with the PropertyChangeEvent from the last section. This section goes into more detail about how Listeners work.
Beans use the same event-handling scheme as AWT and Swing. This means that if your Bean needs to hear about events coming from another Bean, it must register itself with that Bean. To do this, it must implement the Listener interface for the event of interest. At the same time, if your ...
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