import java.io.*;
import java.util.*;
/*
1. Сооздай класс User(id, name, age)
2. Создай ArrayList из 5 разных пользователей(вынеси создание в отдельный метод)
3. Отсортируй лист по id и по name.
 */

public class Main {

    public static class User {

        private int id;
        private String name;
        private int age;

        public User(int id, String name, int age) {
            this.name = name;
            this.age = age;
            this.id = id;
        }

        public int compareTo(User u) {
            int result = this.name.compareTo(u.name);
            return result;
        }
        public String getName() {
            return this.name;
        }
        public int getAge() {
            return this.age;
        }
        public int getId() {
            return this.id;
        }

    }

    public static class byName implements Comparator<User> {
        public int compare(User u1, User u2) {
            return u1.getName().compareTo(u2.getName());
        }
    }

    public static class byId implements Comparator<User> {
        public int compare(User u1, User u2) {
            return u1.getId()  - u2.getId();
        }
    }

    public static class byAge implements Comparator<User> {
        public int compare(User u1, User u2) {
            return u1.getAge()  - u2.getAge();
        }
    }



    public static void main(String[] args) throws Exception {

        System.out.println("all rigth!");
        System.out.println("==========");

        List<User> users = new ArrayList<User>();
        getArray(users);

        System.out.println("by ID:");
        Collections.sort(users,new byId());
        for (User u : users) {
            System.out.println(u.getId() + " " + u.getName() + " " + u.getAge());
        }
        System.out.println("==========");

        System.out.println("by name:");
        Collections.sort(users,new byName());
        for (User u : users) {
            System.out.println(u.getId() + " " + u.getName() + " " + u.getAge());
        }
        System.out.println("==========");

    }





 public static List getArray(List arlist) {

       User ad1 = new User(1,"Masha",24);
       User ad2 = new User(2,"Dasha",25);
       User ad3 = new User(3,"Sasha",22);
       User ad4 = new User(4,"Natasha",21);
       User ad5 = new User(5,"Julia",27);

     arlist.add(ad1);
     arlist.add(ad2);
     arlist.add(ad3);
     arlist.add(ad4);
     arlist.add(ad5);

     return arlist;
    }

}




/*
all rigth!
==========
by ID:
1 Masha 24
2 Dasha 25
3 Sasha 22
4 Natasha 21
5 Julia 27
==========
by name:
2 Dasha 25
5 Julia 27
1 Masha 24
4 Natasha 21
3 Sasha 22
==========

Process finished with exit code 0
*/