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Summer Examinations, 2009/
Exam Code(s) 2BF Exam(s) BSc in Business Information Systems Module Code(s) MS Module(s) Business Application Development III Paper No. Repeat Paper Special Paper External Examiner(s) Dr. D. Ivanov Internal Examiner(s) Dr. Tom Acton, Martin Hughes
Instructions: Candidates are required to answer all questions.^ Marks will
be awarded for commented code. Duration 3Hrs No. of Answer books Requirements : Handout MCQ Statistical Tables Graph Paper Other Material No. of Pages 5 Department(s) Business Information Systems
Please note for every application that you create include your name and
ID number as comments in the first few lines of the code
All Questions Are Compulsory
Question 1: 25 Marks You have been asked to write a simple GUI application that allows a user to enter the following information about an Employee:
- Firstname (String)
- Lastname (String)
- Age (int)
- PPS Number (String) The main application window should look like this: When the user presses the Print button, the application should show a message dialog that displays the employee's information like this: If the user does not enter a valid integer for age, your application should warn the user with the following message:
Part D 20 Marks Write the code for a class called CheckingAccount that inherits the functionality of the Account class, but extends it to include the following:
- A data member of type double that represents the fee charged per transaction.
- A constructor that receives the initial balance, as well as a parameter indicating a fee amount.
- Overridden methods ‘credit’ and ‘debit’ that subtract the fee from the account balance whenever either transaction is performed successfully. The CheckingAccount versions of these methods should invoke the base-class Account version to perform the updates to an account balance. Part E 15 Marks Write a driver class called TestAccounts that does the following:
- Creates a SavingsAccount object with an initial balance of €350 and interest rate of 1.5%.
- Creates a CheckingAccount object with an initial balance of €-5 and a fee of €0.25.
- Uses polymorphism to print the balance of each account.
For Reference: import java.io.File; import java.io.FileNotFoundException; import java.io.Serializable; import java.io.FileOutputStream; import java.io.ObjectOutputStream; import java.io.FileInputStream; import java.io.ObjectInputStream; import java.io.IOException; import java.io.EOFException; import java.lang.SecurityException; import java.lang.IllegalStateException; import java.util.Formatter; import java.util.FormatterClosedException; import java.util.NoSuchElementException; import java.util.InputMismatchException; import java.util.Scanner; import java.awt.BorderLayout; import java.awt.Color; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.awt.event.MouseMotionListener; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import javax.swing.JFileChooser; import javax.swing.JFrame; import javax.swing.JOptionPane; import javax.swing.JScrollPane; import javax.swing.JTextArea; import javax.swing.JTextField;
