Exercise 4, Exceptions and Design Patterns

The tasks will be solved at the scheduled exercise. Exercises are not mandatory, but instead an opportunity to practice before starting working on assignments.

This exercise covers lectures 12-14 and chapters 8-9.2, plus pages 197-205 of section 9.4 in the textbook. You must have watched the lectures or read the book to understand the exercise, but you don't have to understand everything in detail before the exercise.