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？
