Java用对象的2个属性排序

Collections.sort

private static void order(List<Person> persons) {

    Collections.sort(persons, new Comparator() {

        public int compare(Object o1, Object o2) {

            String x1 = ((Person) o1).getName();
            String x2 = ((Person) o2).getName();
            int sComp = x1.compareTo(x2);

            if (sComp != 0) {
               return sComp;
            } 

            Integer x1 = ((Person) o1).getAge();
            Integer x2 = ((Person) o2).getAge();
            return x1.compareTo(x2);
    }});
}

jdk8

var sortedList = persons.stream()
    .sorted(Comparator.comparing(Person::getName)
                      .thenComparing(Person::getAge));
    .collect(Collectors.toList());

persons.sort(Comparator.comparing(Person::getName).thenComparing(Person::getAge));