Description
Overview: Project 11 is the third of three projects that will involve the pricing and reporting of air tickets. In Project 9, you developed Java classes that represent an itinerary and categories of air tickets including non-refundable, economy, business, and elite, all of which include an itinerary. In
Project 10, you modified the AirTicket class and created three additional classes: (1)
AirTicketProcessor that includes a method to read in a ticket data file and methods to generate several reports, (2) IntineraryCompare which implements the Comparator interface for AirTicket; and (3) AirTicketApp which includes the main method for the program. In Project 11, you are to add exception handing and invalid input reporting. You will need to do the following: (1) create a new class named InvalidCategoryException which extends the Exception class, (2) add try-catch statements to catch FileIOException, InvalidCategoryException, and NumberFormatException, and (3) add three methods to the AirTicketProcessor class.
- Itinerary, AirTicket, NonRefundable, Economy, Business, Elite, ItineraryCompare,
Requirements and Design: No changes from the specifications in Project 10
- java
Requirements and Design: InvalidCategoryException is a user defined exception created by
extending the Exception class. This exception is to be thrown and caught in the
readAirTicketFile method in the AirTicketProcessor class when a line of input data contains an invalid category. The constructor for InvalidCategoryException takes a single String parameter representing category and invokes the super constructor with the following String:
“For category: “ + “\”” + category + “\””
This string will be the toString() value of an InvalidCategoryException when it occurs. For a similar constructor, see InvalidLengthException.java in 11_Exceptions\Examples\Polygons from this week’s lecture notes.
- java
Requirements and Design: In addition to the specifications in Project 10, three new methods, getTickets(), getInvalidInput(), and generateReportForInvalidInput(), should be implemented in the AirTicketProcessor class, and the existing readAirTicketFile method must be modified to recognize invalid input data and catch InvalidCategoryException and NumberFormatException.
- getTickets: Accepts no parameters and returns the value of the field for the ArrayList of AirTickets (i.e., the return type is ArrayList<AirTicket>). Note that this method is primarily to facilitate testing.
- getInvalidInput: Accepts no parameters and returns the value of the field for the
ArrayList containing the invalid input read from the file (i.e., the return type is ArrayList<String>). Note that this method is primarily to facilitate testing.
- generateReportForInvalidInput: Has no return value and processes the
invalid input ArrayList to produce the “Air Ticket Report for Invalid Input” as shown below near the end in the Example Output. o readAirTicketFile: Has no return value and accepts the data file name as a String, and throws IOException. This method creates a Scanner object to read in the file and then reads it in line by line. I recommend that you set up a second scanner on the line to scan it. For each correct line scanned, you will create the “appropriate” AirTicket object and add it to the ArrayList of AirTicket field. Each line in the file begins with a category for the ticket (N, E, B, and F are valid categories for ticket class indicating
NonRefundable, Economy, Business, and First (or Elite) respectively; note that F (First) will indicate our Elite class. For each incorrect line scanned (i.e., a line of data contains an invalid category or invalid numeric data), your method will need to handle the invalid items properly. If the line of data begins with an invalid category, your program should throw an InvalidCategoryException (see description above). If a line of data has a valid category, but includes invalid numeric data (e.g., the value for miles contains an alphabetic character), a NumberFormatException will be thrown automatically by the Java Runtime Environment (JRE). Your readAirTicketFile method should catch and
COMP 1210 | Fall 2012 Page 2 of 7
| COMP 1210 | Project 11: Air Ticket App w/Exceptions Page 3 of 7 | ||
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handle InvalidCategoryException and NumberFormatException as follows. In each catch clause, a String object should be created consisting of e + ” in: “ + line
where e is the exception and line is the line with the invalid data. The String object should be added to the ArrayList of invalid input.
AirTicketApp.java
Requirements and Design: The AirTicketApp class contains the main method for running the program. In addition to the specifications in Project 10, the main method should be modified in two ways. (1) A try-catch statement should be added to catch IOException when/if thrown by the readAirTicketFile method in the AirTicketProcessor class. This exception is most likely to occur when an incorrect file name is passed to the readAirTicketFile method. After this exception is caught and printed, your program should loop back and ask the user to enter the file name again. The loop should end only after the readAirTicketFile method completes normally. (2) In addition to the three reports in Project 10, it should also print the “Air Ticket Report for Invalid Input” as shown in the “Example Output” beginning on the next page. Note that the lines in the Invalid Input Report are shown “wrapped”. However, in your output, these lines should not be wrapped. An example data file (air_ticket_data2.csv) can be downloaded from the Lab web page.
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| COMP 1210 | Fall 2012 | Page 3 of 7 | ||
Example Output
| ÏÏ«Ï —-jGRASP exec: java AirTicketApp
ÏÏ§Ï ¼¼§ÏEnter File Name: air_ticket_data2.csv ÏÏ§Ï Ïϧϗ————————- ÏϧÏAir Ticket Report Ïϧϗ————————- ÏÏ§Ï ÏϧÏFlight: DL 1865 ÏϧÏATL-LGA (2012/11/01 1400 – 2012/11/01 1640) 800 miles (1600 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 2.0 ÏϧÏTotal Fare: $1,000.00 (class Business) ÏÏ§Ï Includes Food/Beverage: $50.00 Entertainment: $50.00 ÏÏ§Ï ÏϧÏFlight: DL 1867 ÏϧÏATL-LGA (2012/11/01 1500 – 2012/11/01 1740) 800 miles (1200 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 1.0 ÏϧÏTotal Fare: $450.00 (class Economy) ÏÏ§Ï Includes Award Miles Factor: 1.5 ÏÏ§Ï ÏϧÏFlight: DL 1863 ÏϧÏATL-LGA (2012/11/01 0900 – 2012/11/01 1140) 800 miles (1600 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 2.5 ÏϧÏTotal Fare: $1,325.00 (class Elite) ÏÏ§Ï Includes Food/Beverage: $50.00 Entertainment: $50.00 ÏÏ§Ï Includes: Comm Services: $100.00 ÏÏ§Ï ÏϧÏFlight: DL 1861 ÏϧÏATL-LGA (2012/11/01 0800 – 2012/11/01 1040) 800 miles (800 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 0.45 ÏϧÏTotal Fare: $182.25 (class NonRefundable) ÏÏ§Ï Includes DiscountFactor: 0.9 ÏÏ§Ï ÏϧÏFlight: DL 1866 ÏϧÏLGA-ATL (2012/11/01 1400 – 2012/11/01 1640) 800 miles (1600 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 2.0 ÏϧÏTotal Fare: $1,000.00 (class Business) ÏÏ§Ï Includes Food/Beverage: $50.00 Entertainment: $50.00 ÏÏ§Ï ÏϧÏFlight: DL 1868 ÏϧÏLGA-ATL (2012/11/01 1500 – 2012/11/01 1740) 800 miles (1200 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 1.0 ÏϧÏTotal Fare: $450.00 (class Economy) ÏÏ§Ï Includes Award Miles Factor: 1.5 ÏÏ§Ï ÏϧÏFlight: DL 1864 ÏϧÏLGA-ATL (2012/11/01 0900 – 2012/11/01 1140) 800 miles (1600 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 2.5 ÏϧÏTotal Fare: $1,325.00 (class Elite) ÏÏ§Ï Includes Food/Beverage: $50.00 Entertainment: $50.00 ÏÏ§Ï Includes: Comm Services: $100.00 ÏÏ§Ï ÏϧÏFlight: DL 1862 ÏϧÏLGA-ATL (2012/11/01 0800 – 2012/11/01 1040) 800 miles (800 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 0.45 ÏϧÏTotal Fare: $182.25 (class NonRefundable) ÏÏ§Ï Includes DiscountFactor: 0.9 ÏÏ§Ï |
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| COMP 1210 | Fall 2012 | Page 4 of 7 |
| Ïϧϗ———————————–
ÏϧÏAir Ticket Report (by Flight Number) Ïϧϗ———————————– ÏÏ§Ï ÏϧÏFlight: DL 1861 ÏϧÏATL-LGA (2012/11/01 0800 – 2012/11/01 1040) 800 miles (800 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 0.45 ÏϧÏTotal Fare: $182.25 (class NonRefundable) ÏÏ§Ï Includes DiscountFactor: 0.9 ÏÏ§Ï ÏϧÏFlight: DL 1862 ÏϧÏLGA-ATL (2012/11/01 0800 – 2012/11/01 1040) 800 miles (800 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 0.45 ÏϧÏTotal Fare: $182.25 (class NonRefundable) ÏÏ§Ï Includes DiscountFactor: 0.9 ÏÏ§Ï ÏϧÏFlight: DL 1863 ÏϧÏATL-LGA (2012/11/01 0900 – 2012/11/01 1140) 800 miles (1600 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 2.5 ÏϧÏTotal Fare: $1,325.00 (class Elite) ÏÏ§Ï Includes Food/Beverage: $50.00 Entertainment: $50.00 ÏÏ§Ï Includes: Comm Services: $100.00 ÏÏ§Ï ÏϧÏFlight: DL 1864 ÏϧÏLGA-ATL (2012/11/01 0900 – 2012/11/01 1140) 800 miles (1600 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 2.5 ÏϧÏTotal Fare: $1,325.00 (class Elite) ÏÏ§Ï Includes Food/Beverage: $50.00 Entertainment: $50.00 ÏÏ§Ï Includes: Comm Services: $100.00 ÏÏ§Ï ÏϧÏFlight: DL 1865 ÏϧÏATL-LGA (2012/11/01 1400 – 2012/11/01 1640) 800 miles (1600 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 2.0 ÏϧÏTotal Fare: $1,000.00 (class Business) ÏÏ§Ï Includes Food/Beverage: $50.00 Entertainment: $50.00 ÏÏ§Ï ÏϧÏFlight: DL 1866 ÏϧÏLGA-ATL (2012/11/01 1400 – 2012/11/01 1640) 800 miles (1600 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 2.0 ÏϧÏTotal Fare: $1,000.00 (class Business) ÏÏ§Ï Includes Food/Beverage: $50.00 Entertainment: $50.00 ÏÏ§Ï ÏϧÏFlight: DL 1867 ÏϧÏATL-LGA (2012/11/01 1500 – 2012/11/01 1740) 800 miles (1200 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 1.0 ÏϧÏTotal Fare: $450.00 (class Economy) ÏÏ§Ï Includes Award Miles Factor: 1.5 ÏÏ§Ï ÏϧÏFlight: DL 1868 ÏϧÏLGA-ATL (2012/11/01 1500 – 2012/11/01 1740) 800 miles (1200 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 1.0 ÏϧÏTotal Fare: $450.00 (class Economy) ÏÏ§Ï Includes Award Miles Factor: 1.5 ÏÏ§Ï Ïϧϗ———————————– ÏϧÏAir Ticket Report (by Itinerary) Ïϧϗ———————————– ÏÏ§Ï ÏϧÏFlight: DL 1861 ÏϧÏATL-LGA (2012/11/01 0800 – 2012/11/01 1040) 800 miles (800 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 0.45 |
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| ÏϧÏTotal Fare: $182.25 (class NonRefundable)
ÏÏ§Ï Includes DiscountFactor: 0.9 ÏÏ§Ï ÏϧÏFlight: DL 1863 ÏϧÏATL-LGA (2012/11/01 0900 – 2012/11/01 1140) 800 miles (1600 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 2.5 ÏϧÏTotal Fare: $1,325.00 (class Elite) ÏÏ§Ï Includes Food/Beverage: $50.00 Entertainment: $50.00 ÏÏ§Ï Includes: Comm Services: $100.00 ÏÏ§Ï ÏϧÏFlight: DL 1865 ÏϧÏATL-LGA (2012/11/01 1400 – 2012/11/01 1640) 800 miles (1600 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 2.0 ÏϧÏTotal Fare: $1,000.00 (class Business) ÏÏ§Ï Includes Food/Beverage: $50.00 Entertainment: $50.00 ÏÏ§Ï ÏϧÏFlight: DL 1867 ÏϧÏATL-LGA (2012/11/01 1500 – 2012/11/01 1740) 800 miles (1200 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 1.0 ÏϧÏTotal Fare: $450.00 (class Economy) ÏÏ§Ï Includes Award Miles Factor: 1.5 ÏÏ§Ï ÏϧÏFlight: DL 1862 ÏϧÏLGA-ATL (2012/11/01 0800 – 2012/11/01 1040) 800 miles (800 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 0.45 ÏϧÏTotal Fare: $182.25 (class NonRefundable) ÏÏ§Ï Includes DiscountFactor: 0.9 ÏÏ§Ï ÏϧÏFlight: DL 1864 ÏϧÏLGA-ATL (2012/11/01 0900 – 2012/11/01 1140) 800 miles (1600 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 2.5 ÏϧÏTotal Fare: $1,325.00 (class Elite) ÏÏ§Ï Includes Food/Beverage: $50.00 Entertainment: $50.00 ÏÏ§Ï Includes: Comm Services: $100.00 ÏÏ§Ï ÏϧÏFlight: DL 1866 ÏϧÏLGA-ATL (2012/11/01 1400 – 2012/11/01 1640) 800 miles (1600 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 2.0 ÏϧÏTotal Fare: $1,000.00 (class Business) ÏÏ§Ï Includes Food/Beverage: $50.00 Entertainment: $50.00 ÏÏ§Ï ÏϧÏFlight: DL 1868 ÏϧÏLGA-ATL (2012/11/01 1500 – 2012/11/01 1740) 800 miles (1200 award miles) ÏϧÏBase Fare: $450.00 Fare Adjustment Factor: 1.0 ÏϧÏTotal Fare: $450.00 (class Economy) ÏÏ§Ï Includes Award Miles Factor: 1.5 ÏÏ§Ï Ïϧϗ———————————– ÏϧÏAir Ticket Report for Invalid Input Ïϧϗ———————————– ÏÏ§Ï ÏϧÏInvalidCategoryException: For category: “A” in: A,DL 1865,ATL,LGA,2012/11/01 1400,2012/11/01 1640,800,450,2.0,50.0,50.00 ÏÏ§Ï ÏϧÏjava.lang.NumberFormatException: For input string: “800.0” in: E,DL 1867,ATL,LGA,2012/11/01 1500,2012/11/01 1740,800.0,450,1.0 ÏÏ§Ï ÏϧÏjava.lang.NumberFormatException: For input string: “$450” in: F,DL 1863,ATL,LGA,2012/11/01 0900,2012/11/01 1140,800,$450,2.5,50.0,50.00,100.00 ÏÏ§Ï ÏϧÏjava.lang.NumberFormatException: For input string: “0.90%” in: N,DL 1861,ATL,LGA,2012/11/01 |
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0800,2012/11/01 1040,800,450,0.45,0.90%
ÏϧÏ
ÏϧÏjava.lang.NumberFormatException: For input string: “50.x” in: B,DL 1866,LGA,ATL,2012/11/01
1400,2012/11/01 1640,800,450,2.0,50.x,50.00
ÏϧÏ
ÏϧÏjava.lang.NumberFormatException: For input string: “1/0” in: E,DL 1868,LGA,ATL,2012/11/01
1500,2012/11/01 1740,800,450,1/0
ÏϧÏ
ÏϧÏjava.lang.NumberFormatException: For input string: “100.oo” in: F,DL 1864,LGA,ATL,2012/11/01
0900,2012/11/01 1140,800,450,2.5,50.0,50.00,100.oo
ÏÏ§Ï ¼¼ÏÏ
ÏÏ©Ï —-jGRASP: operation complete.
Due to space constraints, the lines in the Invalid Input Report are shown “wrapped” in the example above. However, in your output, these lines should not be wrapped.
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