T
U
R
BinaryOperator<T>
@FunctionalInterface public interface BiFunction<T,U,R>
Function
这是一个functional interface,其功能方法是apply(Object, Object) 。
apply(Object, Object)
default <V> BiFunction<T,U,V>
andThen(Function<? super R,? extends V> after)
after
apply(T t, U u)
R apply(T t, U u)
t
u
default <V> BiFunction<T,U,V> andThen(Function<? super R,? extends V> after)
V
NullPointerException