PersonClass

import java.util.ArrayList;

public class Person {

    private int id;
    private String name;
    private String phone;
    private int age;
    private ArrayList<Person> friendList;

    public Person(int id, String name, String phone, int age) {
        this.id = id;
        this.name = name;
        this.phone = phone;
        this.age = age;
        this.friendList = new ArrayList<>();
    }

    public int getId(){
        return  this.id;
    }
    public String getName(){
        return  this.name;
    }

    public void addFriend(Person person){
        this.friendList.add(person);
    }

    public void introducePerson() {
        System.out.printf("Hey, I am %s and I am %d yers old :)\n", this.name, this.age);
    }

    public void sharePhone() {
        System.out.printf("You can contact me at %s\n", this.phone);
    }

    public void showFriends() {
        System.out.print("My friends are: ");

        for (int f = 0; f < friendList.size(); f++) {

            Person currentPerson = friendList.get(f);

            System.out.printf("%s ", currentPerson.getName());
        }
    }

}