Java多线程排序--睡眠排序

import java.util.concurrent.Callable;
import java.util.concurrent.FutureTask;
public class sort {
    public static class Sort implements Callable{
      public int i;
      public Sort(int i){
          this.i=i;
      }
        @Override
        public Object call() throws Exception {
            Thread.sleep(i);
            System.out.print(i+" ");
            return null;
        }
    }
    public static void main(String[] args) {
        int[] a = {1, 8, 9, 4, 5, 3,14,16,18,22,17,32,46,2};
        for (int i : a) {
            Sort s = new Sort(i);
            FutureTask futureTask = new FutureTask(s);
            new Thread(futureTask).start();
        }
    }
}