--- sidebar: heading title: Parallel-Streams category: Java tag: - Java8 head: - - meta - name: keywords content: Parallel-Streams,并行流 - - meta - name: description content: 高质量的Java基础常见知识点和面试题总结，让天下没有难背的八股文！ --- # Parallel-Streams 并行流。`stream` 流是支持**顺序**和**并行**的。顺序流操作是单线程操作，串行化的流无法带来性能上的提升，通常我们会使用多线程来并行执行任务，处理速度更快。 ```java /** * @description: * @author: 程序员大彬 * @time: 2021-09-06 00:05 */ public class StreamTest7 { public static void main(String[] args) { int max = 100; List strs = new ArrayList<>(max); for (int i = 0; i < max; i++) { UUID uuid = UUID.randomUUID(); strs.add(uuid.toString()); } List sortedStrs = strs.stream().sorted().collect(Collectors.toList()); System.out.println(sortedStrs); } /** * output * [029be6d0-e77e-4188-b511-f1571cdbf299, 02d97425-b696-483a-80c6-e2ef51c05d83, 0632f1e9-e749-4bce-8bac-1cf6c9e93afa, ...] */ } ```