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 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, catGrandmother);
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(catFather);
System.out.println(catMother);
System.out.println(catSon);
System.out.println(catDaughter);
}
public static class Cat {
private static String name;
private static Cat parent1;
private static Cat parent2;
Cat(String name) {
Cat.name = name;
}
Cat(String name, Cat parent1, Cat parent2) {
Cat.name = name;
Cat.parent1 = parent1;
Cat.parent2 = parent2;
}
Cat(String name, Cat parent1) {
Cat.name = name;
Cat.parent1 = parent1;
}
@Override
public String toString() {
if ((parent1 == null)&&(parent2 != null))
return "The cat's name is " + name + ", no mother "+", father is"+ parent2.name;
else if((parent2 == null)&&(parent1 != null))
return "The cat's name is " + name +", mother is"+parent1.name+ ", no father";
else if((parent2 != null)&&(parent1 != null))
return "The cat's name is " + name + ", mother is " + parent1.name + ", father is"+parent2.name;
else
return "The cat's name is " + name + ", no mother"+", no father";
}
}
}