Java中的ReentrantLock的lock()方法是否能让线程进入BLOCKING状态

Question

代码如下：

/**
 * 自定义线程类
 */
public class MyThread extends Thread{

    private static final ReentrantLock LOCK = new ReentrantLock();

    private static final Condition condition = LOCK.newCondition();

    public MyThread(String name) {
        super(name);
    }

    @Override
    public void run(){
        LOCK.lock();
        try {
            System.out.println(super.getName() + " exe");
            while (true) {
                try {
                    condition.await(1, TimeUnit.SECONDS);
                    System.out.println(super.getName() + " await finish");
                } catch (InterruptedException e) {
                    System.out.println(super.getName() + " interrupt");
                    System.out.println(this.getState());
                }
            }
        } finally {
            LOCK.unlock();
            System.out.println(super.getName() + " unlock");
        }
    }

    public static void main(String[] args) {
        Thread thread1 = new MyThread("thread1");
        thread1.start();

        Thread thread2 = new MyThread("thread2");
        thread2.start();

        Thread thread3 = new MyThread("thread3");
        thread3.start();
    }
}

结果如下：

thread1 exe
thread2 exe
thread3 exe
thread1 await finish
thread3 await finish
thread2 await finish
thread3 await finish
thread1 await finish
thread2 await finish

我最初设想的是，三个线程抢LOCK锁，只有1个线程抢到，其他两个线程处于阻塞状态。

但从结果来看，三个线程都抢到了，请问这是为什么呢？

Answer 1

condition.await()方法后，会使得当前线程释放lock然后加入到等待队列中也就是说你这个锁加的没啥意义