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Event listener

2022-04-23 06:09:00 【commonBean】

Recently, I heard my colleagues talk about the function of event monitoring in the project , Always feel fuzzy , So I want to study .

There are three roles in event monitoring ：

  • event
  • Monitor
  • Event source

In the code , The event source should contain the event object , Also register the event listener object list . After triggering the event , Loop through the event listener onEvent Method .

The event object should also have an event source object .

such , After the event source triggers an event , Just execute the method of event listener one by one

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