按照Store里面的num倒序排列:
List<Store> collect = storeList.stream().sorted(Comparator.comparing(Store::getNum).reversed()).collect(Collectors.toList());
需要正序排列去掉.reversed()
正序排列:由小到大
按照Store里面的num倒序排列并且取出前两条数据
List<Store> collect = storeList.stream().sorted(Comparator.comparing(Store::getNum).reversed()).limit(2).collect(Collectors.toList());