Помогите разобратся!
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 grandFather = reader.readLine();
Cat catGrandPa = new Cat(grandFather);
String grandMother = reader.readLine();
Cat catGrandMa = new Cat(grandMother);
String father = reader.readLine();
Cat catFather = new Cat(father);
String mother = reader.readLine();
Cat catMother = new Cat(mother);
String son = reader.readLine();
Cat catSon = new Cat(son);
String daughter = reader.readLine();
Cat catDaughter = new Cat(daughter);
System.out.println(catGrandPa);
System.out.println(catGrandMa);
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 parent1;
private Cat parent2;
Cat(String name) {
this.name = name;
}
Cat(String name, Cat parent1, Cat parent2) {
this.name = name;
this.parent1 = parent1;
this.parent2 = parent2;
}
@Override
public String toString() {
if (parent1 == null && parent2 == null) {
return "The cat's name is " + name + ", no mother, no father "; }
else 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
return "The cat's name is " + name + ", mother is " + parent1.name + ", father is " + parent2.name;
}
}
}