public class DeadLockTest {
public static final Lock lock1 = new ReentrantLock();
public static final Lock lock2 = new ReentrantLock();
public static void main(String[] args) {
DeadLockTest test = new DeadLockTest();
Worker worker1 = test.new Worker(lock1, lock2);
Worker worker2 = test.new Worker(lock2, lock1);
worker1.start();
worker2.start();
}
class Worker extends Thread {
public Lock lock1;
public Lock lock2;
public Worker(Lock lock1, Lock lock2) {
this.lock1 = lock1;
this.lock2 = lock2;
}
@SneakyThrows
@Override
public void run() {
if (lock1.tryLock(2, TimeUnit.SECONDS)) {
try {
System.out.println(Thread.currentThread().getName() + "获取了锁:" + lock1);
try {
Thread.sleep(200);
} catch (InterruptedException e) {
e.printStackTrace();
}
if (lock2.tryLock(4, TimeUnit.SECONDS)) {
try {
System.out.println(Thread.currentThread().getName() + "获取了锁:" + lock2);
} finally {
lock2.unlock();
System.out.println(Thread.currentThread().getName() + "解锁:" + lock2);
}
} else {
System.out.println("获取锁失败:" + lock2);
}
} finally {
lock1.unlock();
System.out.println(Thread.currentThread().getName() + "解锁:" + lock1);
}
} else {
System.out.println("获取锁失败:" + lock1);
}
}
}
}
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