如何找出另一个线程是否在wait()ing？

public class ThreadSynchronization {
    public static void main(String[] args) {
        Thread thread1 = new Thread(() -> {
            synchronized (ThreadSynchronization.class) {
                System.out.println("Thread 1 is waiting");
                try {
                    Thread.sleep(2000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                System.out.println("Thread 1 is notified and resumed");
            }
        });

        Thread thread2 = new Thread(() -> {
            synchronized (ThreadSynchronization.class) {
                System.out.println("Thread 2 is waiting");
                try {
                    Thread.sleep(3000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                System.out.println("Thread 2 is notified and resumed");
            }
        });

        thread1.start();
        thread2.start();
    }
}

Thread 1 is waiting
Thread 2 is waiting
Thread 1 is notified and resumed
Thread 2 is notified and resumed