Java8-Stream-No.04

import java.util.OptionalInt;import java.util.stream.IntStream;public class Streams4 {    public static void main(String[] args) {        for (int i = 0; i < 10; i++) {            if (i % 2 == 1) {                System.out.println(i);            }        }        IntStream.range(0, 10)            .forEach(i -> {                if (i % 2 == 1) System.out.println(i);            });        IntStream.range(0, 10)            .filter(i -> i % 2 == 1)            .forEach(System.out::println);        OptionalInt reduced1 =            IntStream.range(0, 10)                .reduce((a, b) -> a + b);        System.out.println(reduced1.getAsInt());        int reduced2 =            IntStream.range(0, 10)                .reduce(7, (a, b) -> a + b);        System.out.println(reduced2);    }}