【Java】List集合对象排序方式 - Java8stream流排序
1. stream流根据年龄正序排序
resultList.stream().sorted(Comparator.comparing(User::getAge)) .collect(Collectors.toList());
2. stream流根据年龄倒序排序
在正序的基础上增加reversed
resultList = resultList.stream().sorted(Comparator.comparing(User::getAge) .reversed()) .collect(Collectors.toList());
3. stream流先按学生年龄降序排序，年龄相等的话，则按年级升级排序
resultList = resultList.stream().sorted(Comparator.comparing(User::getAge)
.reversed()
.thenComparing(Comparator.comparing(User::getGrade))
).collect(Collectors.toList());
4. stream流先按年龄降序排序，再按年级降序排序
resultList = resultList.stream().sorted(Comparator.comparing(User::getAge)
.reversed()
.thenComparing(Comparator.comparing(User::getGrade).reversed())
).collect(Collectors.toList());
