grand pa/ma

Question about the task

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23, 26 How to correctly put grandfather and grandmother 👊🧠 ? and WHYYYYYY tried 214674752 different ways: with or without 'cat" big, small letters.. still same error thank you

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 grandFather = reader.readLine(); Cat catGrandFather = new Cat(grandFather, null, null); String grandMother = reader.readLine(); Cat catGrandMother = new Cat(grandMother, null, null); String fatherName = reader.readLine(); Cat catFather = new Cat(fatherName, grandFather, null); String motherName = reader.readLine(); Cat catMother = new Cat(motherName, null, catgrandMother); String sonName = reader.readLine(); Cat catSon = new Cat(sonName, catMother,catFather); String daughterName = reader.readLine(); Cat catDaughter = new Cat(daughterName, catMother,catFather); 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, Cat mother, Cat father) { this.name = name; this.mother = mother; this.father = father; } @Override public String toString() { if (mother == null && father == 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.name + " is the father"; } else if (father == null) { return "The cat's name is " + name + ", " + mother.name + " is the mother, no father "; } else{ return "The cat's name is " + name + ", " + mother.name +" is the mother, " + father.name + " is the father"; } } } }

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Gellert Varga

Level 23 , Szekesfehervar, Hungary

17 August 2021, 19:44

solution

You should take the error messages seriously, you can figure out what's wrong. I ran your program. I received two error messages: - First: "/Solution.java:23: error: incompatible types: String cannot be converted to Cat Cat catFather = new Cat (fatherName, grandFather, null); " I repeat the essence: "String cannot be converted to Cat" You are getting this message because you only have one constructor with these parameters: String, Cat, Cat. It is strictly requiring these arguments, strictly in that order. In line 23, however, you pass such arguments to that constructor: String (declared in line22), String (declared in line 16), null (this could be Cat too, so it's okay.) (So the second argument should be Cat-type, but you're sending a String. ) - And there's a second error message from line 26: "java: 26: error: cannot find symbol Cat catMother = new Cat (motherName, null, catgrandMother); symbol: variable catgrandMother " This simply means that you have not declared a variable called 'catgrandMother' anywhere. Maybe something very similar, you just made a typo-error... By the time I fixed these two bugs, the program was already working well. But there was still a small error in the output because I got this: "The cat's name is Father Oscar, Grandfather Tiger is the mother, no father" - because the constructor expects a MOTHER cat as the second argument, but you sent a FATHER object as the second (line23).

jerry

Level 16 , Earth C-137, Thailand

18 August 2021, 03:03

Thank you, it worked got an understanding about object and string lol

jerry

Level 16 , Earth C-137, Thailand

15 August 2021, 03:34

still not getting it

Lisa

Level 41

14 August 2021, 19:38

Not sure but maybe cause you mixed up grandfather and grandmother positions when passing them to mothers and fathers constructors. Cats 😾 make me nervous... when they stare at you and sometimes purr, purr.. crazy, crazy 🤪😜