ポリモフィズム動物園(Java)
ユズノハがポリモフィズム(多態性)を覚えた時のコード。
ポリモフィズムが覚えられる。
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 | public class Main {     public static void main(String[] args){         Animal a;         a = new Cat(3);         a.cry();         a = new Dog(5);         a.cry();         a = new Mike(7);         a.cry();     } } abstract class Animal {     protected int age;     protected Animal(int age){         this.age = age;     }     abstract public void cry(); } class Cat extends Animal{     public Cat(int age){         super(age);     }     @Override     public void cry(){         System.out.println("ニャー(" + this.age +")");     } } class Dog extends Animal {     public Dog(int age){         super(age);     }     @Override     public void cry(){         System.out.println("ワン(" + this.age +")");     } } class Mike extends Cat {     public Mike(int age){         super(age);     }     @Override     public void cry(){         System.out.println("ミケニャー(" + this.age +")");     } } | 



