如何优雅地停止笔记本电脑流作业？

# 发送SIGTERM信号给进程ID为1234的进程
kill -15 1234

import signal
import time

def graceful_shutdown(signum, frame):
    print("Received shutdown signal. Cleaning up...")
    # 执行清理操作
    time.sleep(2)
    print("Shutdown complete.")
    exit(0)

signal.signal(signal.SIGTERM, graceful_shutdown)

while True:
    print("Running...")
    time.sleep(1)

import java.util.concurrent.TimeUnit;

public class GracefulShutdown {
    public static void main(String[] args) {
        Runtime.getRuntime().addShutdownHook(new Thread(() -> {
            System.out.println("Received shutdown signal. Cleaning up...");
            try {
                TimeUnit.SECONDS.sleep(2);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println("Shutdown complete.");
        }));

        while (true) {
            System.out.println("Running...");
            try {
                TimeUnit.SECONDS.sleep(1);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}