Each ticket has a unique number and a price. There are three types of tickets: walk-up tickets, advance tickets, and student advance tickets. Walk-up tickets are purchased the day of the event and cost $50. 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. Student advance tickets are sold at half the price of normal advance tickets: When they are purchased 10 or more days early they cost $15, and when they are purchased fewer than 10 days early they cost $20. Implement a class called Ticket that will serve as the superclass for all three types of tickets. Define all common operations in this class, and specify all differing operations in such a way that every subclass must implement them. No actual objects of type Ticket will be created: Each actual ticket will be an object of a subclass type. Define the following operations: The ability to construct a ticket by number. The ability to ask for a ticket's price. The ability to println a ticket object as a String. An example String would be "Number: 17, Price: 50.0".

a. Implement a class called WalkupTicket to represent a walk-up event ticket. Walk-up tickets are also constructed by number, and they have a price of $50.
b. Implement a class called AdvanceTicket to represent tickets purchased in advance. An advance ticket is constructed with a ticket number and with the 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.
c. Implement a class called StudentAdvanceTicket to represent tickets purchased in advance by students. A student advance ticket is constructed with a ticket number and with the number of days in advance that the ticket was purchased. Student advance tickets purchased 10 or more days before the event cost $15, and student.

import java.util.Scanner;

public abstract class Ticket   //abstract base class

   private int number;

   public Ticket(int number)

       this.number = number;

   public int getNumber()

       return number;

   public abstract double getPrice();

   public abstract String toString();

public class WalkupTicket extends Ticket

   public WalkupTicket(int number)

       super(number);

   public double getPrice()

       return 50;

   public String toString()

       return Number : +getNumber() +, Price : +getPrice();

public class AdvanceTicket extends Ticket

   private int days;

   public AdvanceTicket(int number)

       super(number);

   public AdvanceTicket(int number,int days)

       super(number);

       this.days = days;

   public double getPrice()

       if(days>=10)

       return 30;

       else

       return 40;

   public String toString()

       return Number : +getNumber() +, Price : +getPrice();

public class StudentAdvanceTicket extends AdvanceTicket

   private int days;

   public StudentAdvanceTicket(int number,int days)

       super(number);

       this.days = days;

   public double getPrice()

Explanation:

import java.util.Scanner;

public abstract class Ticket   //abstract base class

   private int number;

   public Ticket(int number)

       this.number = number;

   public int getNumber()

       return number;

   public abstract double getPrice();

   public abstract String toString();

public class WalkupTicket extends Ticket

   public WalkupTicket(int number)

       super(number);

   public double getPrice()

       return 50;

   public String toString()

       return Number : +getNumber() +, Price : +getPrice();

public class AdvanceTicket extends Ticket

   private int days;

   public AdvanceTicket(int number)

       super(number);

   public AdvanceTicket(int number,int days)

       super(number);

       this.days = days;

   public double getPrice()

       if(days>=10)

       return 30;

       else

       return 40;

   public String toString()

       return Number : +getNumber() +, Price : +getPrice();

public class StudentAdvanceTicket extends AdvanceTicket

   private int days;

   public StudentAdvanceTicket(int number,int days)

       super(number);

       this.days = days;

   public double getPrice()

answer; i believe its compare (b3: b4) ;