Estimated time

30-60 minutes

Level of difficulty

Medium

Objectives

• improving the student's skills in operating with the getter, setter, and deleter methods;
• improving the student's skills in creating their own exceptions.

Scenario

• Implement a class representing an account exception,
• Implement a class representing a single bank account,
• This class should control access to the account number and account balance attributes by implementing the properties:
• it should be possible to read the account number only, not change it. In case someone tries to change the account number, raise an alarm by raising an exception;
• it should not be possible to set a negative balance. In case someone tries to set a negative balance, raise an alarm by raising an exception;
• when the bank operation (deposit or withdrawal) is above 100.000, then additional message should be printed on the standard output (screen) for auditing purposes;
• it should not be possible to delete an account as long as the balance is not zero;
• test your class behavior by:
• setting the balance to 1000;
• trying to set the balance to -200;
• trying to set a new value for the account number;
• trying to deposit 1.000.000;
• trying to delete the account attribute containing a non-zero balance.