Description of the application

The code is a slice of a larger application that sells tickets for airline fights. The first slice

developed includes only the classes required to perform the very specific tasks of issuing a ticket,

assigning a seat to a passenger, and building up the manifest $($or list of passengers$)$ on a specific

flight.

Your starting position is a prototype that has a very simple command line interface so that the

complications of a Web application or graphical user interface are eliminated. Most of the

classes and associations between classes are shown in the class diagrams on page $3.$

Business rules

$$ There are two classes of seats: Economy and Business.

$$ A business class ticket costs $$750$ and an economy seat costs $$500.$

$$ Passengers may be frequent flyers, airline employees $($but not both$)$ or neither.

$$ Airline employees get a $50\%$ discount on economy seats, but not on business class seats.

$$ Frequent flyers get no discount but have privileges outside the scope of this slice of the

application.

Notes

$$ For this slice of the application, passengers have already selected a specific flight and day.

$$ Invoicing and payment processing are handled by a separate subsystem.

$$ For simplicity, the test airplane has very limited seating of only $14$ seats.

Row $1$ is business class and has one seat on either side of the aisle: $1$A and $1$B$.$ Rows $2,3$

and $4$ are economy class and have two seats on either side of the aisle: A$,$ B$,$ C$,$ and D$.$

$$ No persistent data $($databases$)$ is used.

$$ All output goes to the console $($command line I$/$O$).$ The placeholder classes Manifest and

UserPrompter will be replaced by a GUI user interface at a later time in development.

COMP$311$ Assignment $2$: Debugging exercise

Page $2$ of $3$

What the provided code should do $($requirements$)$:

$$ The Manifest class is the main program for this slice of the application.

$$ User interface asks each passenger whether $($s$)$he want to purchase a ticket. If the answer is

$$no$$ the program stops as this situation simulates end of ticket sales.

$$ The UI first asks whether the passenger wants business class and then, if no$,$ economy class

$$ The UI asks for the passenger name and whether the passenger is a frequent flyer or member

of the airline staff.

$$ At this point, the UI invokes the core business logic to sell a ticket.

$$ The application should check whether a suitable seat is available. Passengers cannot choose

their seat: the application assigns one. It issues a ticket and calculates the ticket price. Then it

prints out the ticket details.

$$ Before ending, the Manifest class prints a list of all seats followed by the name of the

passenger who owns a ticket for that seat or the word $$Available$$ if the seat was not sold.

Notes:

The seating plan is generated by the constructor of the SeatingPlan class and can be modified

easily by changing the enumeration type SeatingClass. You can assume these two classes have

already been tested and have no errors. In other words, don$$t worry if you don$$t understand their

code.

Instructions

You are given a JAR that contains source code.

$1.$ Import the Java source into Eclipse. Follow instructions from the instructor if you are not

familiar with Eclipse

$2.$ Run the program a few times to see how it works. You should see clear evidence of bugs.

$3.$ Use the debugger to trace what is going wrong. Resist the temptation to just read the code

looking for bugs. The instructor will walk you through using the debugger to determine

what code causes at least one of the problems.

$4.$ Continue to debug and fix bugs as you go until you are satisfied you have done all that

you can with this code.

FrequentFlyer.class:

package com.cc$.$airline.passengers;

public class FrequentFlyer extends Passenger $\{$

private String fFlyerId;

public FrequentFlyer$($ PassengerName pName, String fFlyerId$)\{$

super$($pName$)$;

this.fFlyerId $=$ fFlyerId;

$\}$

public String getFFlyerId$()\{$

return fFlyerId;

$\}$

public void setFFlyerId$($String flyerId$)\{$

fFlyerId $=$ flyerId;

$\}$

$\}$

Passenger.class

package com.cc$.$airline.passengers;

public class Passenger $\{$

private PassengerName pName;

public Passenger$()\{$

this.pName $=$ new PassengerName$("$T$.","$B$.","$A$.")$;

$\}$

public Passenger$($PassengerName pName$)\{$

this$()$;

this.pName $=$ pName;

$\}$

public PassengerName getPName$()\{$

return pName;

$\}$

public void setPName$($PassengerName name$)\{$

pName $=$ name;

$\}$

$\}$

PassengerName.class

package com.cc$.$airline.passengers;

public class PassengerName $\{$

private String firstName;

private String lastName;

private String mInitial;

public PassengerName$($String first, String middle, String last$)\{$

firstName $=$ first;

mInitial $=$ middle;

lastName $=$ last;

$\}$

public PassengerName$($String first, String last$)\{$

firstName $=$ first;

lastName $=$ last;

$\}$

public String toString$()\{$

String name $=$ firstName;

if $($mInitial $!=$ null && mInitial.length$()>0)\{$

name $+=""+$ mInitial;

$\}$

return name $+""+$ lastName;

$\}$