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  1. /* package whatever; // don't place package name! */
  2. public class Main {
  3.     public static void main(String[] args) {
  4.         Icecream[] icecreams = new Icecream[4];
  5.  
  6.         icecreams[0] = new Icecream("Шоколадное", true, 5);
  7.         icecreams[1] = new Icecream("Сливочное", false);
  8.         icecreams[2] = new Icecream();
  9.         icecreams[3] = new Icecream(icecreams[0]);
  10.  
  11.         for (Icecream icecream : icecreams) {
  12.             icecream.print();
  13.         }
  14.  
  15.         System.out.println("Средний процент жирности: " + Icecream.averageFatContent(icecreams));
  16.         System.out.println("Количество мороженых с шоколадом: " + Icecream.countChocolateIcecream(icecreams));
  17.     }
  18. }
  19.  
  20. class Icecream {
  21.     private String name;
  22.     private boolean hasChocolate;
  23.     private int fatContent; // процент жирности
  24.  
  25.     public Icecream() {
  26.         this("", false, 0);
  27.     }
  28.  
  29.     public Icecream(String name, boolean hasChocolate) {
  30.         this(name, hasChocolate, 0);
  31.     }
  32.  
  33.     public Icecream(String name, boolean hasChocolate, int fatContent) {
  34.         this.name = name;
  35.         this.hasChocolate = hasChocolate;
  36.         this.fatContent = fatContent;
  37.     }
  38.  
  39.     public Icecream(Icecream icecream) {
  40.         this.name = icecream.name;
  41.         this.hasChocolate = icecream.hasChocolate;
  42.         this.fatContent = icecream.fatContent;
  43.     }
  44.  
  45.     public String getName() {
  46.         return name;
  47.     }
  48.  
  49.     public boolean hasChocolate() {
  50.         return hasChocolate;
  51.     }
  52.  
  53.     public int getFatContent() {
  54.         return fatContent;
  55.     }
  56.  
  57.     public static double averageFatContent(Icecream[] icecreams) {
  58.         int totalFatContent = 0;
  59.         int count = 0;
  60.         for (Icecream icecream : icecreams) {
  61.             if (icecream.getFatContent() != 0) {
  62.                 totalFatContent += icecream.getFatContent();
  63.                 count++;
  64.             }
  65.         }
  66.         return (double) totalFatContent / count;
  67.     }
  68.  
  69.     public static int countChocolateIcecream(Icecream[] icecreams) {
  70.         int count = 0;
  71.         for (Icecream icecream : icecreams) {
  72.             if (icecream.hasChocolate()) {
  73.                 count++;
  74.             }
  75.         }
  76.         return count;
  77.     }
  78.  
  79.     public void print() {
  80.         System.out.println("Название: " + name);
  81.         if (hasChocolate) {
  82.             System.out.println("Содержит шоколад.");
  83.         } else {
  84.             System.out.println("Не содержит шоколад.");
  85.         }
  86.         if (fatContent != 0) {
  87.             System.out.println("Процент жирности: " + fatContent);
  88.         }
  89.         System.out.println();
  90.     }
  91. }
  92.  
Success #stdin #stdout 0.12s 57828KB
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stdin
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Standard input is empty
stdout
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Название: Шоколадное
Содержит шоколад.
Процент жирности: 5

Название: Сливочное
Не содержит шоколад.

Название: 
Не содержит шоколад.

Название: Шоколадное
Содержит шоколад.
Процент жирности: 5

Средний процент жирности: 5.0
Количество мороженых с шоколадом: 2
https://ideone.com/RDp4e5
language:
Java (HotSpot 12)
created:
12 days ago
visibility:
public

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