【Java並發】線程的順序執行

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 1 /** 2  * 問題：有線程a、b、c，如何讓它們順序執行？ 3  * 方式一：可用Join()方法實現 4  * 方式二：可用newSingleThreadExecutor() 5  * Created by Smile on 2018/8/12. 6  */ 7 public class ThreadByOrder { 8  9     public static void main(String[] args) throws InterruptedException {10 11         Thread a = new Thread(new ThreadTest("a"));12         Thread b = new Thread(new ThreadTest("b"));13         Thread c = new Thread(new ThreadTest("c"));14 15         //方式一實現16         a.start();17         a.join();18         b.start();19         b.join();20         c.start();21 22         Thread d = new Thread(new ThreadTest("c"));23         Thread e = new Thread(new ThreadTest("d"));24         Thread f = new Thread(new ThreadTest("e"));25         //方式二實現26         ExecutorService singlePool = Executors.newSingleThreadExecutor();27         singlePool.submit(d);28         singlePool.submit(e);29         singlePool.submit(f);30         singlePool.shutdown();31     }32 33     static class ThreadTest implements Runnable{34 35         private String threadName;36 37         public ThreadTest(String name){38             this.threadName = name;39         }40 41         public ThreadTest() {42         }43 44         public void run() {45             if("a".equals(threadName)||"f".equals(threadName))46                 try {47                     Thread.sleep(5000);48                 } catch (InterruptedException e) {49                     e.printStackTrace();50                 }51             System.out.println("thread "+threadName+" is running...");52         }53     }54 }

 

【Java並發】線程的順序執行