时间：2021-10-17 09:12:22 | 栏目：JAVA代码 | 点击：次
直接粗暴sorted会NPE，这种写法可以避免
list.stream().sorted(Comparator.comparing(l -> l.getCreateTime(), Comparator.nullsFirst(Date::compareTo))).collect(toList()); toOrderList.stream().sorted(Comparator.comparing(l -> l.getContractCode(), Comparator.nullsFirst(String::compareTo))).collect(toList());
顺序
resultList.stream().sorted(Comparator.comparing(Role::getCreateTime)).collect(Collectors.toList());
倒序
resultList.stream().sorted(Comparator.comparing(Role::getCreateTime).reversed()).collect(Collectors.toList());