JUC学习笔记（10）—线程池

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原创最新推荐文章于 2026-04-01 00:15:22 发布 160 阅读 AI 写同款· GEO 优化 ›

JUC线程框架深度解析 — 01、JUC基础使用一、JUC开发包简介【 java.util.concurrent开发包】➣ 传统线程编程模型之中为防止死锁等现象的出现(wait()、notify()、 synchronized)时往往会考虑性能、公平性、资源管理等问题，这样加重了程序开发人员的负担；➣ Java5.0添加了一个新的java.util.concurrent开发包(简称JUC)。利用此包进行的多线程编程将有效的减少竞争条... 阅读详情

public class ExecutorsDemo
{
	public static void main(String[] args)
	{
		ScheduledExecutorService service = Executors.newScheduledThreadPool(5);
		ScheduledFuture<Integer> result = null;
		try 
		{
			for (int i = 1; i <=15; i++) 
			{
				result = service.schedule(() -> {
					System.out.print(Thread.currentThread().getName());
					return new Random().nextInt(10);
				}, 2, TimeUnit.SECONDS);
				System.out.println("  ********result: "+result.get());
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			service.shutdown();
		}		
	}

	public static void testThreadPool()
	{
		//ExecutorService service = Executors.newFixedThreadPool(5);//一池5线程
		//ExecutorService service = Executors.newSingleThreadExecutor();//一池1线程
		ExecutorService service = Executors.newCachedThreadPool();//一池N线程
		Future<Integer> result = null;
		
		try 
		{
			for (int i = 1; i <=15; i++) 
			{
				result = service.submit( () -> {
					Thread.sleep(400);
					System.out.print(Thread.currentThread().getName());
					return new Random().nextInt(10);
				} );
				System.out.println("  ********result: "+result.get());
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			service.shutdown();
		}
	}
}

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