Java -使用具有线程间通信的两个线程打印数字序列

class PrintThread implements Runnable {
    private int num;
    private Object lock;

    public PrintThread(int num, Object lock) {
        this.num = num;
        this.lock = lock;
    }

    @Override
    public void run() {
        synchronized (lock) {
            for (int i = 0; i < 10; i++) {
                System.out.println(Thread.currentThread().getName() + ": " + num);
                num += 2;
                lock.notify(); // 唤醒等待的线程
                try {
                    lock.wait(); // 当前线程等待
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            lock.notify(); // 唤醒最后一个等待的线程
        }
    }
}

public class Main {
    public static void main(String[] args) {
        Object lock = new Object();
        Thread thread1 = new Thread(new PrintThread(1, lock));
        Thread thread2 = new Thread(new PrintThread(2, lock));
        thread1.start();
        thread2.start();
    }
}