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Question about the task

Make a family

Java Syntax, Level 8, Lesson 11

Under discussion

Seems to output is good but can't pass last condition :\ Anybody can help?

1. Create a Human class with String name, boolean sex, int age, and ArrayList<Human> children fields.
2. Create and populate objects so that we end up with: two grandfathers, two grandmothers, one father, one mother, and three children.
3. Display all the Human objects (Hint: use the Human class's toString() method).

Requirements:

The program should display text on the screen.
The Human class must have four fields.
The Human class must have one method.
The Solution class must have one method.
The program should create objects and fill them with data to get two grandfathers, two grandmothers, one father, one mother, and three children. Then it should display all the Human objects on the screen.

package com.codegym.task.task08.task0824; import java.util.ArrayList; import java.util.Collections; /* Make a family */ public class Solution { public static void main(String[] args) { ArrayList<Human>childrenOlder = new ArrayList<Human>(); ArrayList<Human>childrenYounger = new ArrayList<Human>(); Human grandfather1 = new Human("Janusz", 78, true,childrenOlder); Human grandfather2 = new Human("Paweł", 88, true); Human grandmother1 = new Human("Anka", 77, false, childrenOlder); Human grandmother2 = new Human("Genowefa", 72, false); Human father = new Human("Janusz", 40, true, childrenYounger); Human mother = new Human("Ola", 50, true, childrenYounger); Human child1= new Human("Janek", 20, true); Human child2 = new Human("Bronek", 20, true); Human child3 = new Human("Mietek", 20, true); Collections.addAll(childrenYounger,child1,child2,child3); Collections.addAll(childrenOlder,father,mother); System.out.println(grandfather1.toString()); System.out.println(grandfather2.toString()); System.out.println(grandmother1.toString()); System.out.println(grandmother2.toString()); System.out.println(father.toString()); System.out.println(mother.toString()); System.out.println(child1.toString()); System.out.println(child2.toString()); System.out.println(child3.toString()); } public static class Human { String name; int age; boolean sex; ArrayList<Human> children = new ArrayList<>(); Human(String name, int age, boolean sex,ArrayList<Human>children){ this.name=name; this.age=age; this.sex=sex; this.children=children; } Human(String name, int age, boolean sex){ this.name=name; this.age=age; this.sex=sex; } public String toString() { String text = ""; text += "Name: " + this.name; text += ", sex: " + (this.sex ? "male" : "female"); text += ", age: " + this.age; int childCount = this.children.size(); if (childCount > 0) { text += ", children: " + this.children.get(0).name; for (int i = 1; i < childCount; i++) { Human child = this.children.get(i); text += ", " + child.name; } } return text; } } }

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Yash

Level 15 , Sugar Hill, United States

16 September 2019, 21:27

father and gradfather1 have the same name. Also, I think they mean that grandfather1 and grandmother1, are suppost to be parents of father. And vice versa with mother. The compiler thinks that grandfather2 and grandmother1 are children because the field ArrayList<Human> children is empty for them. In other words, make grandfather1, and grandmother1 parents to father and father only. Then make grandfather2, and grandmother2 parents to mothers and mother only. So you have to make a new arraylist and put father in there own arraylist and mother in their own arraylist.