public class Ticket{
  private static int numTicketsSold = 0; // shared
  private int ticketNum; // one per object
  
  public Ticket(){
    numTicketsSold++;
    ticketNum = numTicketsSold;
  }
  
  public static int getNumberSold() {
    return numTicketsSold;
  }
  
  public int getTicketNumber() { return ticketNum; }
  
  public String getInfo(){
    return "ticket # " + ticketNum + "; " + 
            numTicketsSold + " ticket(s) sold.";
  }
}