Project - CS 630 - Computing Fundamentals I

CS 630 - Computing Fundamentals I - Fall 2005 Project

Loyola College > Department of Computer Science > CS 630 > Project

Due

Monday, December 12th at the beginning of class. Projects will be penalized 20% for each day after the due date. Projects will not be accepted more than four days late.

Objectives

to create and use classes
to use named constants
to use conditional statements
to use loops
to use arrays

Introduction

For this project you will be developing a limited airline booking system. In total you will create three class. First, develop a class to represent an airline booking. In this system the attributes of a booking include the passenger's name and age, the flight number, date and time of the flight, the fare price, a meal preference, and a row and seat.

This particular airline only has one size plane, which has 32 rows and row 16 is always the exit row. Rows are numbered 1 to 32. Also, there are always six seats in a row labeled A to F. Seats A and F are window seats. Seats C and D are aisle seats. The others are middle seats.

The airline includes some special features. First, it gives a discount of 15% off the fare to children and seniors. Children include all passengers 12 and under. Seniors include all passengers 65 and older. They also offer special meals to passengers willing to pay an extra $10. This price is not discounted for any passenger. The special meal options are vegetarian, low carb, and kosher.

The airline imposes some rules when assigning rows, seats, and meals. Passengers must be assigned to a valid row, and children cannot sit in the exit row. Passengers must be assigned a valid seat, and passengers must either choose one of the special meals or have no meal preference.

In addition the airline offers group tickets. All passengers in a group must fly on the same flight. A group recieves an additional 10% discount off the entire price including any special meals if there 8 or more people in the group.

Assignment

Write a worker class called AirlineBooking. This class should have at least the following attributes:

fields as described above corresponding to the attributes
constants so that no number, characters, or Strings appear in the worker class's methods and constructor except for in the getProfile method.
a constructor to create a new booking with the signature
```
    AirlineBooking(String name, int age, int flightNum, GregorianCalendar dateTime, double fare)
```
The row and seat data fields should be assigned default values that indicate that the attributes have not yet been set. The default meal preference is "No Preference".
mutator methods that each return a boolean value that indicates if the method successfully changed the value. You will only change the value of the field if the parameter is a valid value for that particular booking. The methods include
- a method setAge that takes an integer value representing the age of the passenger. Valid ages are non-negative numbers. The method returns true if the age is non-negative and false otherwise
- a method setRow that takes a row number and assigns the person to that row if the person is allowed to sit in the row. The method returns true if the row is set to that number and false otherwise
- a method setSeat that takes a character indicating the seat and places the person in the seat if it is a valid seat letter. The method returns true if the seat is set to that character and false otherwise
- a method setMealPreference that takes a String indicating the meal selection and returns true if the meal preference is changed and false otherwise
a method findSeatLocation that returns the String that indicates whether the seat is a window, middle, or aisle seat.
a method calcPrice that returns the cost of the ticket based on the fare, any discounts, and includes the extra charge for special meals.

a method getProfile that returns a String that describes the reservation. Use the following format:

Name: <Person's name> [(Child)|(Senior)]  *[] indicate optional values and | means or
Flight: <Flight Number> on <Date>
Row: <Row Number>
Seat: <Seat Letter> (<Seat Location>)
Meal: <Meal Preference>
Price: <Price including discounts and meals>

The following are some sample profiles:

Name: Baby (Child)
Flight: 1920 on 12/12/05 8:30 AM
Row: 6
Seat: B (Middle)
Meal: No Preference
Price: $209.09

Name: Dad
Flight: 1920 on 12/12/05 8:30 AM
Row: 6
Seat: C (Aisle)
Meal: Kosher
Price: $255.99

Name: Gramma (Senior)
Flight: 1920 on 12/12/05 8:30 AM
Row: 6
Seat: A (Window)
Meal: Low Carb
Price: $219.09

* Remember the DateFormat for the GregorianCalendar and use NumberFormat for the price.

You will also write a class AirlineGroupBooking which books a group of passengers that are all on the same flight. The class should include the following attributes:

Data field for the group of airline bookings
A constructor that takes as parameters an array of the names of the passengers in the group, the flight number, time of departure, and the cost of the flight. You should be able to determine the size of the group. (Since you will need to call your AirlineBooking constructor, use a default age that is an invalid age. Make sure that you do not give any discounts based on the default age.)
Mutator methods which accept the name of the passenger whose ticket will be modified, and the new value. A boolean value will be returned that reports success or failure of the change. The mutators are the four described in the AirlineBooking class.
A method calcPrice which calculates the cost of the entire group package including any discounts that might apply.

A getProfile method that returns a String of the information of all the passengers, and includes the grand total for the cost of all the tickets and meals with discounts. An example follows.

********** PASSENGER 1*************
Name: Donald 
Flight: 630 on 11/11/05 2:52 PM
Row: 5
Seat: A(Window)
Meal: No Preference
Price: $220.99
********** PASSENGER 2*************
Name: Mickey 
Flight: 630 on 11/11/05 2:52 PM
Row: 5
Seat: B(Middle)
Meal: No Preference
Price: $220.99
********** PASSENGER 3*************
Name: Minnie 
Flight: 630 on 11/11/05 2:52 PM
Row: 5
Seat: C(Aisle)
Meal: Low Carb
Price: $230.99
***********************************
Grand Total: $682.97

You should also write a test driver, AirlineTest, to test your methods in both AirlineBooking and AirlineGroupBooking thoroughly. I'm interested in "white-box" testing where all paths are tested, especially exceptions.

Grading

60% Execution. Partial credit will be granted depending on how much progress you made towards the correct result.
20% Design. The design score is based on how easy it is to follow the logic of your code, how well you avoided repetitive code, and how easy it would be to change your code if certain specifications changed. (Remember, you can write additional helper methods when necessary.)
10% Testing. The testing score is based on how thoroughly you test your code. Even if your AirlineBooking and AirlineGroupBooking classes function perfectly, you will get a 0 for testing if you do not write a test driver.
10% Style. Style includes comments, indentation, and choice of variable and method names.
Substantial progress must be made towards correct execution to earn the points for design and style.

Submissions

Email your source code for all three classes to me. Turn in a print out of your code in class. (Make sure it looks like to want it to. I will be grading the format of the code.)

This project may take between 30 and 40 hours to complete.