如何在Java中使用ExecutorService实现缓存线程池

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class CachedThreadPoolExample {
    public static void main(String[] args) {
        // 创建缓存线程池
        ExecutorService executor = Executors.newCachedThreadPool();

        // 提交多个任务
        for (int i = 0; i < 5; i++) {
            int taskId = i;
            executor.submit(() -> {
                System.out.println("任务 " + taskId + " 正在由线程 " + 
                                   Thread.currentThread().getName() + " 执行");
                try {
                    Thread.sleep(2000);
                } catch (InterruptedException e) {
                    Thread.currentThread().interrupt();
                }
                System.out.println("任务 " + taskId + " 完成");
            });
        }

        // 关闭线程池
        executor.shutdown();
        try {
            if (!executor.awaitTermination(60, java.util.concurrent.TimeUnit.SECONDS)) {
                executor.shutdownNow();
            }
        } catch (InterruptedException e) {
            executor.shutdownNow();
            Thread.currentThread().interrupt();
        }
    }
}

import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicInteger;

ThreadFactory namedFactory = new ThreadFactory() {
    private final AtomicInteger threadNumber = new AtomicInteger(1);
    
    @Override
    public Thread newThread(Runnable r) {
        Thread t = new Thread(r, "cached-pool-thread-" + threadNumber.getAndIncrement());
        t.setDaemon(false); // 非守护线程
        return t;
    }
};

ExecutorService executor = Executors.newCachedThreadPool(namedFactory);