ошибка в строчке 23, возможно есть ещё, но не факт. Подскажите, 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 GrandDa = reader.readLine();
Cat grandDa = new Cat(GrandDa);
String GrandMa = reader.readLine();
Cat grandMa = new Cat(GrandMa);
String daddyName = reader.readLine();
Cat catDaddy = new Cat(daddyName, grandDa);
String motherName = reader.readLine();
Cat catMother = new Cat(motherName, grandMa);
String sun = reader.readLine();
Cat sun = new Cat(sun, catMother, catDaddy);
String daughterName = reader.readLine();
Cat catDaughter = new Cat(daughterName, catMother, catDaddy);
System.out.println(catMother);
System.out.println(catDaughter);
}
public static class Cat {
private String name;
private Cat parent;
private Cat parent1;
Cat(String name) {
this.name = name;
}
Cat(String name, String parent){
this.name = name;
this.paren = parent;
}
Cat(String name, Cat parent, Cat parent1) {
this.name = name;
this.parent = parent;
this.parent1 = parent1;
}
@Override
public String toString() {
if (parent == null || parent1 == null)
return "The cat's name is " + name + ", no mother, no father ";
else if (parent1 == null)
return "The cat's name is " + name + ", mother is " + parent.name;
else if(parent = null)
return "The cat's name is " + name + ", father is " + parent1.name;
else
return "The cat's name is " + name + ", mother is " + parent.name + ", father is " + parent1.name;
}
}
}