package com.example.demo.qqqq;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.stream.Collectors;

public class TestArraySort {
    public static void main(String[] args) {
        List<person> list = new ArrayList<>();
        list.add(new person(1,"2021-09-06"));
        list.add(new person(2,"2021-09-08"));
        list.add(new person(2,"2021-09-03"));
        list.add(new person(3,"2021-09-07"));
        list.add(new person(4,"2021-09-05"));
        List newList = list.stream().sorted((o1, o2) -> {
            int num = Integer.compare(o2.getAge(),o1.getAge());
            if (num == 0) {
                SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
                try {
                    Date d1 = format.parse(o1.getBirth());
                    Date d2 = format.parse(o2.getBirth());
                    return Long.compare(d2.getTime(), d1.getTime());
                } catch (ParseException e) {
                    e.printStackTrace();
                }
                return 0;
            }
            return num;
        }).collect(Collectors.toList());
        newList.forEach(e->{
            System.out.println(e.toString());
        });

    }
    private static class person{
        private int age;
        private String birth;

        @Override
        public String toString() {
            return "person{" +
                    "age=" + age +
                    ", birth='" + birth + '\'' +
                    '}';
        }

        public person(int age, String birth) {
            this.age = age;
            this.birth = birth;
        }

        public int getAge() {
            return age;
        }

        public void setAge(int age) {
            this.age = age;
        }

        public String getBirth() {
            return birth;
        }

        public void setBirth(String birth) {
            this.birth = birth;
        }
    }
}