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); } }

转载于:https://www.cnblogs.com/bilaisheng/p/10210934.html