import lombok.SneakyThrows;
import java.util.Date;
import java.util.concurrent.*;
/*
main上锁3
线程1获得锁
线程2获得锁
线程3获得锁
线程1释放锁2
线程2释放锁1
线程3释放锁0
main解锁0
* */
public class T {
@SneakyThrows
public static void main(String[] args) {
CountDownLatch latch = new CountDownLatch(3);
System.out.println(Thread.currentThread().getName() + "上锁" + latch.getCount());
new Thread(() -> {
try {
System.out.println(Thread.currentThread().getName() + "获得锁");
Thread.sleep(200);
latch.countDown();
System.out.println(Thread.currentThread().getName() + "释放锁" + latch.getCount());
} catch (Exception e) {
}
}, "线程1").start();
new Thread(() -> {
try {
System.out.println(Thread.currentThread().getName() + "获得锁");
Thread.sleep(500);
latch.countDown();
System.out.println(Thread.currentThread().getName() + "释放锁" + latch.getCount());
} catch (Exception e) {
}
}, "线程2").start();
new Thread(() -> {
try {
System.out.println(Thread.currentThread().getName() + "获得锁");
Thread.sleep(1000);
latch.countDown();
System.out.println(Thread.currentThread().getName() + "释放锁" + latch.getCount());
} catch (Exception e) {
}
}, "线程3").start();
latch.await();
System.out.println(Thread.currentThread().getName() + "解锁" + latch.getCount());
}
}
