简单ThreadPoolExecutor示例的RxJava等价物

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

public class ThreadPoolExample {
    public static void main(String[] args) {
        // 创建一个固定大小的线程池
        ExecutorService executor = Executors.newFixedThreadPool(5);

        // 提交任务给线程池执行
        executor.submit(new RunnableTask("Task 1"));
        executor.submit(new RunnableTask("Task 2"));
        executor.submit(new RunnableTask("Task 3"));

        // 关闭线程池
        executor.shutdown();
    }

    static class RunnableTask implements Runnable {
        private String taskName;

        public RunnableTask(String taskName) {
            this.taskName = taskName;
        }

        @Override
        public void run() {
            System.out.println("Executing task: " + taskName);
            // 任务具体的执行逻辑
        }
    }
}