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package com.mycompany.app6;

import java.util.Arrays;
import java.util.stream.DoubleStream;
import java.util.stream.IntStream;

public class Main {
    //
    public static void doSomething(int value){
        System.out.println("doSomething=" + value);
    }
    //
    public static void main(String[] args) {

        System.out.println("EX1:");
        int[] arr = new int[]{1, 2, 3};
        IntStream si = Arrays.stream(arr);
        si.forEach(x -> {System.out.println(x);}); // лябда-выражение в качестве параметра метода
        //
        System.out.println("EX2:");
        Arrays.stream(new int[]{1, 2, 3}).forEach(x -> {System.out.println(x);});
        // использование ссылки на метод - оператор ::
        System.out.println("EX3:");
        Arrays.stream(new int[]{1, 2, 3}).forEach(System.out::println); // System.out::println - ссылка на метод println
        //
        System.out.println("EX4:");
        DoubleStream si2 = Arrays.stream(new double[]{1.0, 2, 3});
        // filter
        si2.filter(x -> x>2).filter(x -> x>3).forEach(System.out::println);
        System.out.println("EX5:");
        Arrays.stream(new int[]{1, 2, 3}).forEach(Main::doSomething);


    }
}