实现Runnable接口死锁，扩展Thread类运行正常

public class DeadlockExample implements Runnable {
    private Object lock1 = new Object();
    private Object lock2 = new Object();

    public void run() {
        synchronized (lock1) {
            System.out.println("Thread acquired lock1");
            try {
                Thread.sleep(100);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            synchronized (lock2) {
                System.out.println("Thread acquired lock2");
            }
        }
    }

    public static void main(String[] args) {
        DeadlockExample example = new DeadlockExample();
        Thread thread1 = new Thread(example);
        Thread thread2 = new Thread(example);
        thread1.start();
        thread2.start();
    }
}