For the next four problems, consider the task of representing types of tickets to campus e...

For the next four problems, consider the task of representing types of tickets to campus events. Each ticket has a unique number and a price. There are three types of tickets: walk-up tickets, advance tickets, and student advance tickets. Figure illustrates the types:

• 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".

Figure Classes of tickets that are available to campus events