java将runnable转换为callable

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

public class RunnableToCallableExample {

    public static void main(String[] args) {
        // 创建一个线程池
        ExecutorService executor = Executors.newFixedThreadPool(1);

        // 定义一个Runnable对象
        Runnable runnable = new Runnable() {
            @Override
            public void run() {
                // 执行一些任务
                System.out.println("Hello from Runnable");
            }
        };

        // 将Runnable转换为Callable
        Callable<Void> callable = new Callable<Void>() {
            @Override
            public Void call() throws Exception {
                runnable.run();
                return null;
            }
        };

        // 提交任务并获取Future对象
        Future<Void> future = executor.submit(callable);

        // 等待任务执行完毕
        try {
            future.get();
        } catch (Exception e) {
            e.printStackTrace();
        }

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