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import java.util.*; public class Main { public static void main(String[] args) throws Exception { Animal a; a = new Cat(3); a.say(); a = new Mike(5); a.say(); } } interface Sayable { void say(); } abstract class Animal implements Sayable { protected int age; public Animal(int age) { this.age = age; } public int getAge() { return this.age; } } class Cat extends Animal { public Cat(int age) { super(age); } public void say() { System.out.println("ニャー(" + this.age + ")"); } } class Mike extends Cat { public Mike(int age) { super(age); } public void say() { System.out.println("ミケニャー(" + this.age + ")"); } } |
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ニャー(3) ミケニャー(5) |
