Подскажите, пожалуйста
package com.javarush.task.pro.task10.task1010;
import java.util.Objects;
/*
Два айфона
*/
public class Iphone {
private String model;
private String color;
private int price;
public Iphone(String model, String color, int price) {
this.model = model;
this.color = color;
this.price = price;
}
public boolean equals(Object obj){
if (this == obj)
return true;
if (obj == null)
return false;
if (!(obj instanceof Iphone))
return false;
Iphone iphone = (Iphone) obj;
if (this.price != iphone.price)
return false;
if (this.model == null && iphone.model == null && this.color == null && iphone.color == null)
return true;
if (this.model == null && iphone.model == null)
return this.color.equals(iphone.color);
if (this.model == null)
return iphone.model == null;
if (this.color == null && iphone.color == null)
return this.model.equals(iphone.model);
if (this.color == null)
return iphone.color == null;
return this.model.equals(iphone.model) && this.color.equals(iphone.color);
}
public static void main(String[] args) {
Iphone iphone1 = new Iphone(null, null, 999);
Iphone iphone2 = new Iphone(null, null, 999);
System.out.println(iphone1.equals(iphone2));
}
}