package algus;

import java.util.Arrays;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Predicate;

public class ArvuProov1 {

	public static double arvuta(double arv, ArvuTootleja tootleja) {
		return tootleja.tehe(arv);
	}

	public static void main(String[] args) {
		double a = 3;
		System.out.println(arvuta(a, new Kahekordistaja()));
		System.out.println(arvuta(a, x -> x * x));
		Function<Double, Double> tehe1 = (b) -> b * b * b;
		System.out.println(tehe1.apply(a));
		Consumer<Double> pyydja1 = (b) -> {
			System.out.println("saabus " + b);
		};
		Arrays.stream(new Double[] { 3.0, 7.0, 6.0 }).forEach(pyydja1);
		Predicate<Double> kontrollija1 = b -> b < 5;
		Arrays.stream(new Double[] { 3.0, 7.0, 6.0 }).filter(x -> x>6)
				.forEach(System.out::println);
		Arrays.stream(new Double[] { 3.0, 7.0, 6.0 }).filter(kontrollija1)
				.forEach(pyydja1);

	}

}