JDK中的函数接口 接受两个入参返回一个参数
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FunctionalInterface public interface BiFunction<T, U, R> { /** * Applies this function to the given arguments. * * @param t the first function argument * @param u the second function argument * @return the function result */ R apply(T t, U u); /** * Returns a composed function that first applies this function to * its input, and then applies the {@code after} function to the result. * If evaluation of either function throws an exception, it is relayed to * the caller of the composed function. * * @param <V> the type of output of the {@code after} function, and of the * composed function * @param after the function to apply after this function is applied * @return a composed function that first applies this function and then * applies the {@code after} function * @throws NullPointerException if after is null */ default <V> BiFunction<T, U, V> andThen(Function<? super R, ? extends V> after) { Objects.requireNonNull(after); return (T t, U u) -> after.apply(apply(t, u)); } }
原文地址:https://blog.csdn.net/weixin_47267435/article/details/142954576
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