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③. consumer 只有输入,没有返回值①.void accept(T t):对给定的参数执行此操作②.default Consumer<T> andThen(Consumer after):返回一个组合的 Consumer,依次执行此操作,然后执行 after操作③.Consume...

JAVA802_函数式接口的概述、Supplier供给型接口、consumer消费型接口、Predicate断定型接口、Function函数型接口（上）

①. 函数式接口的概述①. 如何检测一个接口是不是函数式接口呢?(函数式接口:有且仅有一个抽象方法的接口)@FunctionalInterface放在接口定义的上方:如果接口是函数式接口,编译通过；如果不是,编译失败②. 注意我们自己定义函数式接口的时候,@FunctionalInterface 是...

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更新时间 2022-07-27 12:27:15

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