package common;

import java.util.function.Function;

public class LambdaDemo {
 public static void main(String[] args) {
 Function<Integer, Double> f1 = (a) -> { return 1.0*a*a; };
 Function<Integer, Double> f2 = (a) -> { return Math.sqrt(a); };

 ff(10, f1);
 ff(5, f1);
 ff(10, f2);
 ff(7, f2);
 }

 static void ff(int v, Function<Integer, Double> f) {
 double r = f.apply(v);
 System.out.println("r = " + r);
 }
}