что не так?
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 dadName = reader.readLine();
Cat catDad = new Cat (dadName);
String motherName = reader.readLine();
Cat catMother = new Cat (motherName);
String grandfather = reader.readLine();
Cat catGrandfather = new Cat(grandfather);
String grandmother = reader.readLine();
Cat catGrandmother = new Cat (grandmother);
String dadName = reader.readLine();
Cat catDad = new Cat (dadName);
String motherName = reader.readLine();
Cat catMother = new Cat (motherName);
String sonName = reader.readLine();
Cat catSon = new Cat (sonName);
String daughterName = reader.readLine();
Cat catDaughter = new Cat (daughterName);
System.out.println(catGrandfather);
System.out.println(catGrandmother);
System.out.println(catDad);
System.out.println(catMother);
System.out.println(catSon);
System.out.println(catDaughter);
}
public static class Cat {
private String name;
private Cat parent;
}
Cat(String name, Cat parent) {
this.name = name;
this.parent = parent;
}
Cat(String name) {
this.name = name;
}
@Override
public String toString() {
if (parent == null)
return "The cat's name is " + name + ", no mother ";
else
return "The cat's name is " + name + ", mother is " + parent.name;
}
}
}