Description
Person and Customer Classes
Design a class named Person with fields for holding a person’s name, address, and telephone number. Write one or more constructors and the appropriate mutator and accessor methods for the class’s fields.
Next, design a class named Customer, which extends the Person class. The Customer class should have a field for a customer number and a boolean field indicating whether the customer wishes to be on a mailing list. Write one or more constructors and the appropriate mutator and accessor methods for the class’s fields. Demonstrate an object of the Customer class in a simple program.
Retail Price Calculator
Create a GUI application where the user enters the wholesale cost of an item and its markup percentage into text fields. (For example, if an item’s wholesale cost is $5 and its markup percentage is 100 percent, then its retail price is $10.) The application should have a button that displays the item’s retail price when clicked.
Theater Revenue
A movie theater only keeps a percentage of the revenue earned from ticket sales. The remainder goes to the movie company. Create a GUI application that allows the user to enter the following data into text fields:
# Price per adult ticket
# Number of adult tickets sold
# Price per child ticket
# Number of child tickets sold
The application should calculate and display the following data for one night’s box office business at a theater:
• Gross revenue for adult tickets sold: This is the amount of money taken in for all adult tickets sold.
• Net revenue for adult tickets sold: This is the amount of money from adult ticket sales left over after the payment to the movie company has been deducted.
• Gross revenue for child tickets sold: This is the amount of money taken in for all child tickets sold.
• Net revenue for child tickets sold: This is the amount of money from child ticket sales left over after the payment to the movie company has been deducted.
• Total gross revenue: This is the sum of gross revenue for adult and child tickets sold.
• Total net revenue: This is the sum of net revenue for adult and child tickets sold.
Assume the theater keeps 20 percent of its box office receipts. Use a constant in your code to represent this percentage.



