线程竞争

 1/**
 2 *Author: wangy325
 3 *Date: 2024-08-07 20:00:13
 4 *Description: 线程争用
 5**/
 6public class Threading {
 7
 8    public static void main(String[] args) {
 9        for (int i = 0; i < 100; i++) {
10            MyThread t = new MyThread();
11            t.start();
12        }
13        // uncertain output~
14        System.out.printf("shardInt: %d\n", MyThread.shardInt);
15    }
16}
17
18class MyThread extends Thread {
19    public static int shardInt = 0;
20    @Override
21    public void run() {
22        shardInt++;
23        try {
24            TimeUnit.SECONDS.sleep(1);
25        } catch (InterruptedException e) {
26            e.printStackTrace();
27        }
28    }
29}