事件处理方法接收的参数可以是事件的超类，然后事件会被发布到事件的超类的处理者中，包括被事件实现的接口。
Event handler methods may be defined in super classes, and events are posted to handlers of the event's super classes including any implemented interfaces.
这些事件不是第1部分所描述的IC DIEvent接口的实现。
These events are not implementations of the ICDIEvent interface described in Part 1.
servlet规范定义了侦听器类为处理事件而实现的一些接口。
The servlet specification defines several interfaces that listener classes implement in order to handle events.
应用推荐