сравнивал с остальными решениями, не могу найти ошибку
package com.javarush.task.task06.task0621;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
/*
Родственные связи кошек
*/
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, null);
String grandMotherName = reader.readLine();
Cat catGrandMother = new Cat(grandMotherName, null, null);
String fatherName = reader.readLine();
Cat catFather = new Cat(fatherName, null, catGrandFather);
String motherName = reader.readLine();
Cat catMother = new Cat(motherName, catGrandMother, null);
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(catMother);
System.out.println(catFather);
System.out.println(catDaughter);
System.out.println(catSon);
}
public static class Cat {
private String name;
private Cat motherParent;
private Cat fatherParent;
Cat (String name){
this.name = name;}
Cat(String name, Cat motherParent, Cat fatherParent) {
this.name = name;
this.motherParent = motherParent;
this.fatherParent = fatherParent;
}
@Override
public String toString() {
if (motherParent == null)
motherParent.name =", no mother";
else motherParent.name = ", mother is " + motherParent.name;
if (fatherParent == null)
fatherParent.name =", no father";
else fatherParent.name = ", father is " + fatherParent.name;
return "The cat name is " + name + motherParent.name + fatherParent.name;
}
}
}