package com.mkyong;

​

import java.util.function.BiFunction;

import java.util.function.Function;

​

public class Java8BiFunction2b {

​

    public static void main(String[] args) {

​

        String result = powToString(2, 4,

                (a1, a2) -> Math.pow(a1, a2),

                (r) -> "Result : " + String.valueOf(r));

​

        System.out.println(result); // Result : 16.0

​

    }

​

    public static <R> R powToString(Integer a1, Integer a2,

                                    BiFunction<Integer, Integer, Double> func,

                                    Function<Double, R> func2) {

​

        return func.andThen(func2).apply(a1, a2);

​

    }

​

}