Java8 @FunctionalInterface

Functional Interface即函数式接口，在这个接口里面只能有一个抽象方法，即Single Abstract Method Interface。

@FunctionalInterface

public interface FunctionAdd

{

    void add(int i);

}

 

You can declare a method that use FunctionAdd as the type such as

public void transform(FunctionAdd functionAdd) {

    functionAdd.add();

}

 

transform(Add1::add);

transform(Add2::addRequired);

只要函数签名一致就可以传递，函数名本身不一定非得一样。

原文:http://blog.youkuaiyun.com/hongchangfirst/article/details/80450014

作者:hongchangfirst

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