Doesn't resolve father object

Question about the task

Under discussion

Everything works except the third call to write out the father's name and grandfather's name. I'm really confused on this one because all the other conditions work. Your help is appreciated.

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; /* Cat relations */ 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,null); String grandmotherName = reader.readLine(); Cat catgrandMother = new Cat(grandmotherName,null,null); String fatherName = reader.readLine(); Cat catFather = new Cat(fatherName, grandfatherName); String motherName = reader.readLine(); Cat catMother = new Cat(motherName, grandmotherName, null); String sonName = reader.readLine(); Cat catSon = new Cat(sonName, motherName, fatherName); String daughterName = reader.readLine(); Cat catDaughter = new Cat(daughterName, motherName, fatherName); System.out.println(catgrandFather); System.out.println(catgrandMother); System.out.println(fatherName); System.out.println(catMother); System.out.println(catSon); System.out.println(catDaughter); } public static class Cat { private String name; private String mother; private String father; private Cat parent; Cat(String name, String father) { this.name = name; this.father = father; } Cat(String name, String mother, String father) { 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 mother, no father"; }else if(mother == null){ return "The cat's name is "+name+", no mother, "+father+" is the father"; }else if(father == null){ return "The cat's name is "+name+", "+mother+" is the mother, no father"; }else{ return "The cat's name is "+name+", "+mother+" is the mother, "+father+" is the father"; } } } }

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zimme

Level 14

25 June 2020, 17:31

you forgot null argument for catgrandFather and catFather

Maxine Hammett

Level 19 , San Diego, United States

25 June 2020, 18:13

I'm sorry I still don't understand. I don't reference grandfather in my code accept when I create an object for it.

zimme

Level 14

25 June 2020, 18:28

you wrote well for mother and grandmother, now just do the same thing for father and grandfather. catgrandFather=new cat(grandfatherName, null, null) same thing for father=new cat(fatherName, null, grandfatherName)

Maxine Hammett

Level 19 , San Diego, United States

25 June 2020, 20:13

OH I found my error System.out.println(catFather); was set to fatherName and not the object