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 gFather = reader.readLine();
Cat catgFather = new Cat(gFather);
String gMother = reader.readLine();
Cat catgMother = new Cat(gMother);
String Father = reader.readLine();
Cat catFather = new Cat(Father, null, catgFather);
String Mother = reader.readLine();
Cat catMother = new Cat(Mother, catgMother, null);
String Son = reader.readLine();
Cat catSon = new Cat(Son, catMother, catFather);
String Daughter = reader.readLine();
Cat catDaughter = new Cat(Daughter, catMother, catFather);
System.out.println(catgFather);
System.out.println(catgMother);
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 parentMa;
private Cat parentPa;
Cat(String name) {
this.name = name;
}
Cat(String name, Cat parentMa, Cat parentPa) {
this.name = name;
this.parentMa = parentMa;
this.parentPa = parentPa;
}
@Override
public String toString() {
if (parentMa == null)
return "The cat's name is " + name + ", no mother, father is " + parentPa.name;
else if(parentPa == null)
return "The cat's name is " + name + ", mother is " + parentMa.name + ", no father";
else if(parentMa == null && parentPa == null)
return "The cat's name is " + name + ", no mother, no father";
else
return "The cat's name is " + name + ", mother is " + parentMa.name + ", father is " + parentPa.name;
}
}
}