Java线程池用法实战案例分析

2019-11-26 08:26:15

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本文实例讲述了Java线程池用法。分享给大家供大家参考，具体如下：

一使用newSingleThreadExecutor创建一个只包含一个线程的线程池

1 代码

import java.util.concurrent.*;public class executorDemo{  public static void main( String[] args )  {        ExecutorService executor = Executors.newSingleThreadExecutor();    executor.submit(() -> {      String threadName = Thread.currentThread().getName();      System.out.println("Hello " + threadName);    });   }}

2 运行

Hello pool-1-thread-1

二含有终止方法的线程池

1 代码

import java.util.concurrent.*;public class executorShutdownDemo {  public static void main( String[] args ) {    ExecutorService executor = Executors.newSingleThreadExecutor();    executor.submit(() -> {      String threadName = Thread.currentThread().getName();      System.out.println("Hello " + threadName);    });    try {      TimeUnit.SECONDS.sleep(3);      System.out.println("尝试关闭线程执行器...");      executor.shutdown();      executor.awaitTermination(5, TimeUnit.SECONDS);    } catch (InterruptedException e) {      System.err.println("关闭任务被中断！");    } finally {      if (!executor.isTerminated()) {        System.err.println("取消未完成的任务");        executor.shutdownNow();      }      System.out.println("任务关闭完成");    }  }}

2 运行