import java.util.Scanner; public class Main { public static void main (String[] args) { Scanner scan = new Scanner (System.in); int opt=1, initTeller = 0, initCS = 0; while (opt != 0) { System.out.println ("Selamat datang!"); System.out.println ("Silakan masukkan nomor antrian: \n"); System.out.println ("1. Teller\n2. Customer Service\n"); opt = scan.nextInt(); Button output = new Button(); Print paper = new Print(); switch (opt) { case 1: initTeller++; paper.ticket (1); output.println (1, initTeller); output.println (2, initCS); break; case 2: initCS++; paper.ticket (2); output.println (1, initTeller); output.println (2, initCS); break; } } } }