Последний пункт валидатора.

package com.javarush.task.task08.task0824; import sun.security.krb5.internal.crypto.HmacMd5ArcFourCksumType; import java.util.ArrayList; import java.util.List; /* Собираем семейство */ public class Solution { public static void main(String[] args) { //напишите тут ваш код Human child1 = new Human("Ko", true, 3); Human child2 = new Human("Zo", false, 6); Human child3 = new Human("Mo", true, 9); ArrayList<Human> child = new ArrayList<>(); child.add(child1); child.add(child2); child.add(child3); Human father = new Human("Bob", true, 36, child); Human mother = new Human("Mom", false, 34, child); ArrayList<Human> fatherA = new ArrayList<>(); fatherA.add(father); ArrayList<Human> motherA = new ArrayList<>(); motherA.add(mother); Human grandPa = new Human("Nobo", true, 51, fatherA); Human grandPa2 = new Human("Fobo", true, 54); Human grandMa = new Human("Lolo", false, 50, motherA); Human grandMa2 = new Human("Fifa", false, 49); System.out.println(grandPa); System.out.println(grandPa2); System.out.println(grandMa); System.out.println(grandMa2); System.out.println(father); System.out.println(mother); for (Human human : child) { System.out.println(human); } } public static class Human { //напишите тут ваш код String name; Boolean sex; int age; ArrayList<Human> children = new ArrayList<>(); public Human(String name, Boolean sex, int age) { this.name = name; this.sex = sex; this.age = age; } public Human(String name, Boolean sex, int age, ArrayList<Human> child) { this.name = name; this.sex = sex; this.age = age; this.children = child; } public String toString() { String text = ""; text += "Имя: " + this.name; text += ", пол: " + (this.sex ? "мужской" : "женский"); text += ", возраст: " + this.age; int childCount = this.children.size(); if (childCount > 0) { text += ", дети: " + this.children.get(0).name; for (int i = 1; i < childCount; i++) { Human child = this.children.get(i); text += ", " + child.name; } } return text; } } }