接口的使用
com.alibaba.nacos.common.utils.Observer
使用Observer的程序包
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com.alibaba.nacos.common.utils中Observer的使用
参数类型为Observer的com.alibaba.nacos.common.utils中的方法修饰符和类型方法说明voidObservable.addObserver(Observer o)Adds an observer to the set of observers for this object, provided that it is not the same as some observer already in the set.voidObservable.deleteObserver(Observer o)Deletes an observer from the set of observers of this object.