The complexity in SAX comes from the Observer design pattern it implements.
SAX中的复杂度来自它实现的Observer设计模式。
The Observer design pattern allows interested parties to be notified of changes.
Observer设计模式可以把更改通知给对此感兴趣的对象。
The Observer design pattern allows interested parties to be notified of changes.
Observer设计模式可以把更改通知给对此感兴趣的对象。
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