Много раз проверял свой код, ни как не могу найти ошибку, валидатор "ругается на бабушку"
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(grandMotherName);
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 parent1;
private Cat parent2;
Cat(String name)
{
this.name = name;
}
Cat(String name, Cat parent1, Cat parent2)
{
this.name = name;
this.parent1 = parent1;
this.parent2 = parent2;
}
@Override
public String toString()
{
if (parent1 == null & parent2 == null)
{
return "The cat's name is " + name + ", no mother, no father";
}
else
{
if(parent1 == null)
{
return "The cat's name is " + name + ", no mother, father is " + parent2.name;
}
if(parent2 == null)
{
return "The cat's name is " + name + ", mother is " + parent1.name + ", no father";
}
return "The cat's name is " + name + ", mother is " + parent1.name + ", father is " + parent2.name;
}
}
}
}