如何从ScheduledExecutorService获取队列和池大小

ScheduledExecutorService executor = Executors.newScheduledThreadPool(10);

int queueSize = ((ScheduledThreadPoolExecutor) executor).getQueue().size();

int poolSize = ((ScheduledThreadPoolExecutor) executor).getPoolSize();

import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledThreadPoolExecutor;

public class Main {
    public static void main(String[] args) {
        ScheduledExecutorService executor = Executors.newScheduledThreadPool(10);
        int queueSize = ((ScheduledThreadPoolExecutor) executor).getQueue().size();
        int poolSize = ((ScheduledThreadPoolExecutor) executor).getPoolSize();
        System.out.println("队列大小：" + queueSize);
        System.out.println("池大小：" + poolSize);
    }
}