179. static 숨김, 오버라이딩, 오버로딩 구분

1class Animal {
2    static String kind() { return "A"; }
3    String sound() { return "a"; }
4    String eat(int n) { return "i" + n; }
5}
6 
7class Dog extends Animal {
8    static String kind() { return "D"; }
9    String sound() { return "d"; }
10    String eat(String s) { return "s" + s; }
11}
12 
13public class Main {
14    public static void main(String[] args) {
15        Animal x = new Dog();
16        String r = x.kind();
17        r += x.sound();
18        r += x.eat(2);
19        System.out.println(r);
20        Dog y = new Dog();
21        System.out.println(y.eat("7") + y.eat(7));
22    }
23}