java等于号的优先级顺序

这个顺序是从右边往左边

Map<Date, List<Map<String, Object>>> dataMap = dayBeforeCostList == null && dayBeforeCostList.size() == 0 ? null : dayBeforeCostList.stream().collect
      (Collectors.groupingBy(e -> (Date) e.get("PDATE")));

 

 

Java：符号优先级的排列顺序

https://blog.csdn.net/weixin_64145253/article/details/121986025