не понимаю почему не работает. заранее спасибо за помощь)
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);
String grandMotherName = reader.readLine();
Cat catGrandMother = new Cat( grandMotherName);
String fatherName = reader.readLine();
Cat catFather = new Cat( fatherName, catGrandFather);
String motherName = reader.readLine();
Cat catMother = new Cat( motherName, catGrandFather );
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(catDaughter);
System.out.println(catSon);
}
public static class Cat
{
private String name;
private Cat parentFather;
private Cat parentMother;
Cat(String name)
{
this.name = name;
}
Cat(String name, Cat parentFather)
{
this.name = name;
this.parentFather = parentFather;
}
Cat(String name, Cat parentFather, Cat parentMother)
{
this.name = name;
this.parentFather = parentFather;
this.parentMother = parentMother;
}
@Override
public String toString()
{
if (parentFather == null && parentMother == null)
return "The cat's name is " + name + ", no mother " + ", no father ";
else if (parentFather == null)
return "The cat's name is " + name + ", mother is " + parentMother.name + ", no father ";
else if (parentMother == null)
return "The cat's name is " + name + ", no mother " + ", father is " + parentFather.name;
else
return "The cat's name is " + name + ", mother is " + parentMother.name + ", father is " + parentFather.name;
}
}
}