这个问题在这里已经有了答案：

如何处理lambda中的检查异常[重复]（1个答案）
上个月关门了。

public CompletableFuture<Set<BusStop>> getBusStops() {
    CompletableFuture<Set<BusStop>> stops = new CompletableFuture<Set<BusStop>>();
    try {
      CompletableFuture<Scanner> sc = CompletableFuture.supplyAsync(() ->
              new Scanner(BusAPI.getBusStopsServedBy(serviceId).get()));
      stops = sc.thenApply(x -> x.useDelimiter("\n")
              .tokens()
              .map(line -> line.split(","))
              .map(fields -> new BusStop(fields[0], fields[1]))
              .collect(Collectors.toSet()));
      //sc.close();
    } catch (InterruptedException e) {
      e.printStackTrace();
    } catch (ExecutionException e) {
      e.printStackTrace();
    }
    return stops;
  }

我有以下错误：

BusService.java:36: error: unreported exception InterruptedException; must be caught or dec
lared to be thrown
              new Scanner(BusAPI.getBusStopsServedBy(serviceId).get()));
                                                                   ^
BusService.java:44: error: exception InterruptedException is never thrown in body of corres
ponding try statement
    } catch (InterruptedException e) {
      ^
BusService.java:46: error: exception ExecutionException is never thrown in body of correspo
nding try statement
    } catch (ExecutionException e) {
      ^
3 errors

我有点困惑，因为编译器说必须捕获异常，但在下一行中它说从未抛出异常？我该如何改变 sc.close() 因为它现在是一个完整的未来。