public class Button { Teller a = new Teller(); CS b = new CS(); int x; int saveTeller = 0, saveCS = 0; public void println (int x, int num) { if (x == 1) { System.out.println ("No. antrian Teller = " + a.tellerNumber(num)); } else if (x == 2) { System.out.println ("No. antrian CS = " + b.csNumber(num)); System.out.println (); } else { System.out.println ("Input salah"); } } }