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Create the Human class with String name, boolean sex, int age, Human father, and Human mother fields. Create and populate objects so that we end up with: Two grandfathers, two grandmothers, one father, one mother, and three children. Display the objects on the screen.

Note:
If you write your own String toString() method in the Human class, then it will be used to display the object on the screen.

Example output:
Name: Anna, sex: female, age: 21, father: Paul, mother: Kate Name: Kate, sex: female, age: 55 Name: Ben, sex: male, age: 2, father: Michael, mother: Anna …

Requirements:

The program must not read data from the keyboard.
Add the following fields to the Human class: String name, boolean sex, int age, Human father, and Human mother.
Add a constructor: public Human(String name, boolean sex, int age).
Add a constructor: public Human(String name, boolean sex, int age, Human father, Human mother).
Create 9 different Human objects (4 objects without a father and mother and 5 objects with them).
Display all the created objects on the screen.

package com.codegym.task.task07.task0724; /* Family census */ public class Solution { public static void main(String[] args) { Human grandfather1 = new Human("GrandFather1", true, 70); Human grandmother1 = new Human("GrandFather1", true, 70); Human human0 = new Human("hamza",true,20); Human human1 = new Human("hamza",true,20); Human human2 = new Human("hamza",true,20); Human human3 = new Human("hamza",true,20); Human human4 = new Human("hamza",true,20,grandfather1,grandmother1); Human human5 = new Human("hamza",true,20,grandfather1,grandmother1); Human human6 = new Human("hamza",true,20,grandfather1,grandmother1); Human human7 = new Human("hamza",true,20,grandfather1,grandmother1); Human human8 = new Human("hamza",true,20,grandfather1,grandmother1); System.out.println(human0.toString()); System.out.println(human1.toString()); System.out.println(human2.toString()); System.out.println(human3.toString()); System.out.println(human4.toString()); System.out.println(human5.toString()); System.out.println(human6.toString()); System.out.println(human7.toString()); System.out.println(human8.toString()); } public static class Human { String name; boolean sex; int age; static Human father; static Human mother; public Human(String name, boolean sex, int age){ this.name=name; this.sex=sex; this.age=age; } Human(String name, boolean sex, int age, Human father, Human mother){ this.name=name; this.sex=sex; this.age=age; this.father=father; this.mother=mother; } public String toString() { String text = ""; text += "Name: " + this.name; text += ", sex: " + (this.sex ? "male" : "female"); text += ", age: " + this.age; if (this.father != null) text += ", father: " + this.father.name; if (this.mother != null) text += ", mother: " + this.mother.name; return text; } } }

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ArJadhav

Level 11 , Bengaluru, India

29 January 2019, 09:59

Human h1 = new Human("GrandFather1",true,23 ); Human h2 = new Human("GrandMother1",false,20); Human h3 = new Human("GrandFather2",false,12); Human h4 = new Human("GrandMother2",true, 42); Human h5 = new Human("Father", true , 12, h1,h2); Human h6 = new Human("Mother", false , 12, h3, h4); Human h7 = new Human("children1", false , 12, h5,h6); Human h8 = new Human("children2", true , 12, h5, h6); Human h9 = new Human("children3", false , 12,h5,h6); System.out.println(h1.toString()); System.out.println(h2.toString()); System.out.println(h3.toString()); System.out.println(h4.toString()); System.out.println(h5.toString()); System.out.println(h6.toString()); System.out.println(h7.toString()); System.out.println(h8.toString()); System.out.println(h9.toString()); } public static class Human { // write your code here String name; boolean sex; int age; static Human father, mother; 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, Human father, Human mother) { this.name = name; this.sex = sex; this.age = age; Human.father/*.name*/ = father; Human.mother/*.name*/ = mother; }

polbatona

Level 17 , Omsk, Russian Federation

21 June 2019, 15:12

public static class Human {
    // write your code here
    private String name;
    private boolean sex;
    private int age;
    private Human father;
    private Human mother;

    Human(String name, boolean sex, int age) {
        this.name = name;
        this.sex = sex;
        this.age = age;
    }

    Human(String name, boolean sex, int age, Human father, Human mother) {
        this.name = name;
        this.sex = sex;
        this.age = age;
        this.father = father;
        this.mother = mother;
    }

Girish Patel

Level 8 , Hyderabad, India

15 October 2019, 17:17

Here u can direct print object. without use like that obj.toString(); if we are overload the toString() method in our class then System.out.println(obj); and System.out.println(obj.toString()); output will be the same.

Khurram

Level 16 , Lahore, Pakistan

17 November 2018, 17:08

the data type of the sex field is boolean, so if it is true for males, it should be false for females also, there should be a total of 9 objects of the Human class but you have declared 11 objects try to use descriptive string names for the objects so that when you display the objects you don't get confused, here all the objects have the same name "hamza" constructors do not have a return type (line 41)