134. 객체 수를 세는 공유 변수

1class Ticket {
2    static int count = 0;
3    int no;
4 
5    Ticket() {
6        count++;
7        no = count;
8    }
9}
10 
11public class Main {
12    public static void main(String[] args) {
13        Ticket a = new Ticket();
14        Ticket b = new Ticket();
15        Ticket c = new Ticket();
16        System.out.println(a.no + " " + Ticket.count);
17    }
18}