演示AtomicInteger的使用

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicInteger;

/**
 * 演示AtomicInteger的使用
 */
public class AtomicIntegerTest {

    private static AtomicInteger count = new AtomicInteger(0);

    private static void inc(){
        try {
            Thread.sleep(1);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        count.getAndIncrement();
    }

    public static void main(String [] args) throws InterruptedException {
        final CountDownLatch latch = new CountDownLatch(100);
        for (int i = 0; i< 100; i++) {
            new Thread(new Runnable() {
                @Override
                public void run() {
                    AtomicIntegerTest.inc();
                    latch.countDown();
                }
            }).start();
        }
        latch.await();
        System.out.println("運行結果：" + count);
    }
}