why is it not working???

Question about the task

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public class Solution { public static void main(String[] args) throws IOException { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); String grandfatherName = reader.readLine(); Cat catGrandfather = new Cat(grandfatherName); String grandmotherName = reader.readLine(); Cat catGrandmother = new Cat(grandmotherName); String fatherName = reader.readLine(); Cat catFather = new Cat(fatherName, catGrandfather, null); String motherName = reader.readLine(); Cat catMother = new Cat(motherName, null, catGrandmother); String sonName = reader.readLine(); Cat catSon = new Cat(sonName, catFather, catMother); String daughterName = reader.readLine(); Cat catDaughter = new Cat(daughterName, catFather, catMother); System.out.println(catGrandfather); System.out.println(catGrandmother); System.out.println(catFather); System.out.println(catMother); System.out.println(catSon); System.out.println(catDaughter); } public static class Cat { private String name; private Cat father; private Cat mother; Cat(String name) { this.name = name; } Cat(String name, Cat father, Cat mother) { this.name = name; this.father = father; this.mother = mother; } @Override public String toString() { if (father == null && mother == null) return "The cat's name is " + name + ", no father " + ", no mother "; else if (father == null ) return "The cat's name is " + mother.name + ", no father "; else if (mother == null) return "The cat's name is " + father.name + ", no mother "; else return "The cat's name is " + name + ", " + father.name + " is the father" + mother.name + " is the mother"; } } }

Task: Each cat has a name and a mother.
Create a class that describes this situation.
Create two objects: a daughter cat and a mother.
Display them on the screen.

New task: Each cat has a name, a father, and a mother.
Edit Cat so that it reflects these relationships.
Create 6 objects: grandfather (the father's father), grandmother (the mother's mother), father, mother, son, daughter.
Display them all in the following order: grandfather, grandmother, father, mother, son, daughter.

Example input:
Grandfather Tiger Grandmother Puss Father Oscar Mother Missy Son Simba Daughter Coco

Example output:
The cat's name is Grandfather Tiger, no mother, no father The cat's name is Grandmother Puss, no mother, no father The cat's name is Father Oscar, no mother, Grandfather Tiger is the father The cat's name is Mother Missy, Grandmother Puss is the mother, no father The cat's name is Son Simba, Mother Missy is the mother, Father Oscar is the father The cat's name is Daughter Coco, Mother Missy is the mother, Father Oscar is the father

Requirements:

The program should read in the names of 6 cats in the specified order.
The main method should create 6 Cat objects.
The program should display 6 lines with information about the cats.
The line about the grandfather (first line) must match the conditions.
The line about the grandmother (second line) must match the conditions.
The line about the father (third line) must match the conditions.
The line about the mother (fourth line) must match the conditions.
The line about the son (fifth line) must match the conditions.
The line about the daughter (sixth line) must match the conditions.

package com.codegym.task.task06.task0621; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; /* 1. The program should read in the names of 6 cats in the specified order. 2. The main method should create 6 Cat objects. 3. The program should display 6 lines with information about the cats. 4. The line about the grandfather (first line) must match the conditions. 5. The line about the grandmother (second line) must match the conditions. 6. The line about the father (third line) must match the conditions. 7. The line about the mother (fourth line) must match the conditions. 8. The line about the son (fifth line) must match the conditions. 9. The line about the daughter (sixth line) must match the conditions. */ public class Solution { public static void main(String[] args) throws IOException { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); String grandfatherName = reader.readLine(); Cat catGrandfather = new Cat(grandfatherName); String grandmotherName = reader.readLine(); Cat catGrandmother = new Cat(grandmotherName); String fatherName = reader.readLine(); Cat catFather = new Cat(fatherName, catGrandfather, null); String motherName = reader.readLine(); Cat catMother = new Cat(motherName, null, catGrandmother); String sonName = reader.readLine(); Cat catSon = new Cat(sonName, catFather, catMother ); String daughterName = reader.readLine(); Cat catDaughter = new Cat(daughterName, catFather, catMother ); System.out.println(catGrandfather); System.out.println(catGrandmother); System.out.println(catFather); System.out.println(catMother); System.out.println(catSon); System.out.println(catDaughter); } public static class Cat { private String name; private Cat father; private Cat mother; Cat(String name) { this.name = name; } Cat(String name, Cat father, Cat mother) { this.name = name; this.father = father; this.mother = mother; } @Override public String toString() { if (father==null && mother==null) return "The cat's name is " + name + ", no father " + ", no mother "; else if (father==null) return "The cat's name is " + mother.name + ", no father "; else if (mother==null) return "The cat's name is " + father.name + ", no mother "; else return "The cat's name is " + name + ", " + father.name + " is the father" + mother.name + " is the mother"; } } }

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Hashirama

Level 26 , Port-Harcourt, Nigeria

15 January 2019, 08:49

Revisit your toString() method. It starts with no mother, no father; the mother comes before the father in the toString() method. Also, you need atleast 3 constructors: one for name only, another for name and parent (mother or father) and the last for name, mother and father. create a static parentSex variable In the constructor that accepts name and parent arguement, test if parentSex is either male or female and set the parent reference to the appropriate parent.

Djole

Level 41 , Belgrade, Serbia

3 January 2019, 21:00

that wasn't an issue, fixed it though. the problem was that it displays null for all names.

Guadalupe Gagnon

Level 37 , Tampa, United States

3 January 2019, 18:26

You will need to revist the overide .toString(). The output of your program do not meet the output requirements that are set. Read the example output and make sure your output matches.