code: public static <V> Future<V> execute(Callable<V> callable)
    {
      FutureTask<V> futureTask = new FutureTask<V>(callable);
  
      new Thread(futureTask).start();
  
      return futureTask;
    }
docs: Executes the callable in a separate thread and return the future to get the result. Note
  that this implementation is not efficient and should be used very carefully.
  
  @param callable
  @return the future to get the result.