Question

Ticket Hierarchy

Ticket Abstract Class

• Create a static variable called nextTicketId. This is an integer representing the next available integer for the ticketId

                                private static int nextTicketId = 1000;

• getPrice method: Abstract method that returns a double. NOTE: Do not make price an instance variable in Ticket.
• Noargument constructor: Sets event name to “none”, event location to “none”, and ticket id to 0.
• Create a constructor that accepts the event name and event location as parameters. Set the ticket Id to the nextTicketId available. Then, increment the nextTicketId.
• Generate getters and setters for the 3 instance variables: event name, event location, and ticket id Override toString from the Object class: The following example shows the format you should use:                          “Event name: Concert, Event location: Civic Center, Ticket Id: 1000, Price: 50.0”

WalkupTicket Class              

• Create a noargument constructor
• Create a constructor that accepts the event name and event location
• Override the Ticket toString() o It should invoke super.toString() and be in this format:

WalkupTicket Event name: Concert, Event location: Civic Center, Ticket Id: 1000, Price: 50.0 -          These tickets always cost $50 each. Override the getPrice() method for this subclass. Use a constant.

AdvanceTicket Class

• Add an instance variable that stores the number of days in advance that the ticket was purchased. Generate getter and setter for new instance variable
• Create a noargument constructor
• Create a constructor that accepts the event name, event location, and number of days in advance that the ticket was purchased.
• Advance tickets purchased 10 or more days before the event cost $30, and advance tickets purchased fewer than 10 days before the event cost $40. Override the getPrice() method for this subclass. Use constants
• These tickets are nonrefundable. Override toString for this subclass to clearly indicate this and make sure that you invoke super.toString(). The following example shows the format you should use:

         “AdvanceTicket Event name: Concert, Event location: Civic Center, Ticket Id: 1000, Price: 30.0 (*Nonrefundable Ticket *)”

TicketTester Class

• Create 4 WalkupTicket objects using a Ticket reference. For example:

     Ticket ticket1 = new WalkupTicket(“Concert”, “Civic Center”);

• Create 4 AdvanceTicket objects using a Ticket reference. For example:

     Ticket ticket5 = new AdvanceTicket(“Graduation”, “LVIS”, 5);

Answer 1

Tester:

public class TicketTester {

   public static void main(String[] args) {
       for(int i = 1; i <= 4; i++)
           Ticket ticket1 = new WalkupTicket("Concert", "Civic Center");
       for(int i = 1; i <= 4; i++)
           Ticket ticket5 = new AdvanceTicket("Graduation", "LVIS", 5);
   }

}


ADvancedTicket:

public class AdvanceTicket extends Ticket{
   private static final int beforeTen = 30;
   private static final int afterTen = 40;
  
   int inAdvance;
  
   AdvanceTicket() {
       super();
       inAdvance = 0;
   }
  
   AdvanceTicket(String event, String place, int inAdvance) {
       super(event, place);
       this.inAdvance = inAdvance;
   }
  
   @Override
   public int getPrice() {
       if(inAdvance >= 10)
           return beforeTen;
       return afterTen;
   }
  
   public int getAdvance() {
       return inAdvance;
   }
  
   public void setAdvance(int x) {
       inAdvance = x;
   }
  
   @Override
   public String toString() {
       return "dvanceTicket " + super.toString() + "(*Nonrefundable Ticket *)";
   }
}

WalkupTicket

public class WalkupTicket extends Ticket{
  
   private static final int price = 50;
  
   WalkupTicket() {
       super();
   }
  
   WalkupTicket(String event, String place) {
       super(event, place);
   }
  
   @Override
   public int getPrice() {
       return price;
   }
  
   @Override
   public String toString() {
       return "WalkupTicket " + super.toString();
   }
}

Ticket

public class Ticket extends Object{
   private static int nextTicketId = 1000;
  
   private String eventName, location;
   private int ID;
  
   Ticket() {
       eventName = "none";
       location = "none";
       ID = 0;
   }
  
   Ticket(String event, String place) {
       eventName = event;
       location = place;
       ID = nextTicketId;
       nextTicketId++;
   }
  
   public int getPrice() {
       return 0;
   }
  
   public String getEventName() {
       return eventName;
   }
  
   public void setEventName(String s) {
       eventName = s;
   }
  
   public String getLocation() {
       return location;
   }
  
   public void setLocation(String s) {
       location = s;
   }
  
   public int getID() {
       return ID;
   }
  
   public void setID(int x) {
       ID = x;
   }
  
   @Override
   public String toString() {
       return "Event name: "+eventName+", Event location: "+location+", Ticket Id: "+ID+", Price: "+getPrice();
   }
}

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