java简单的多线程执行超时,强制关闭线程杀死进程

package com.zz.demo;

import java.io.IOException;
import java.util.concurrent.*;

public class aa {
    public static void main(String[] args) throws InterruptedException, ExecutionException, IOException {
        for (int i = 0; i < 5; i++) {
            new Thread(new bb(i)).start();//多线程执行
        }
    }

    private static void extracted(int i) throws InterruptedException, ExecutionException {
        ExecutorService pool = Executors.newWorkStealingPool();
        Future future = pool.submit(() -> {
            if (i==1){
                Thread.sleep(1000*20);
            }
            if (i==2){
                Thread.sleep(1000);
            }
            System.err.println(i+"执行完了");
            return "aaa";
        });
        try {
            future.get(10, TimeUnit.SECONDS);
        } catch (TimeoutException e) {
            e.printStackTrace();
            System.out.println("超时了小伙子");
            System.out.println("执行线程的状态：" + future.isDone());
            System.out.println("我要杀死你----"+i);
            future.cancel(true);
            System.out.println("再看执行线程的状态：" + future.isDone());
        }
        future.get();
        System.out.println("到主线程了");
    }
    static class  bb implements Runnable{
        private int i;

        public bb(int i) {
            this.i = i;
        }

        @Override
        public void run() {
            try {
//                System.err.println("执行:"+this.i);
                //20秒
                extracted(i);
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            } catch (ExecutionException e) {
                throw new RuntimeException(e);
            }
        }
    }
}