list.sort(Comparator.comparing(p -> p.age));
list.sort(Comparator.comparing(RestPermissionResp::getAmount));
list.sort(Comparator.comparing(p -> p.age).reversed());
people.sort(Comparator.comparing(Person::getName));
Collections.sort(people, new Comparator<Person>() {
@Override
public int compare(Person p1, Person p2) {
return Integer.compare(p1.age, p2.age); // 根据年龄升序排序
}
});