FAQ
We will add frequently asked questions to the list below
Sometimes JUnit cannot be resolved. To fix this, we need to add the JUnit to the build path:
Useful Resources
Please note that all these resources are unofficial. They do not belong to the lecture material and have been created by motivated volunteers. Therefore you might find, although unlikely, some mistakes in the resources. If you do, then please report them. You can find the official course webpage here (click).
Weekly Session Recaps
Here you will find my slides, notes, and any additional resources we've looked at during our exercise session.
This week we reviewed the exercises from week 1 and discussed the exercises for the coming week. We also looked at some Java rules (short circuiting) and solved the exercise on slide 17 together (slides and solution below)
This week we reviewed the exercises from week 2 and discussed the exercises for the coming week. We looked at Java primitive types (mainly int, double) and their importance, solved an exercise together and discussed increment and decrement operators. (slides and solution below)
This week we reviewed the exercises from week 3 and discussed common mistakes we found in your submissions of week 2. We also solved an exercise from a previous exam (2021). The goal of the exercise was to remove redundancy in Java code. The slides below contain some slides that we did not cover in this weeks session, but plan on covering next week.
This week we reviewed the exercises from week 4 and discussed common mistakes we found in your submissions of week 3. We also looked at a strategy to solve Loop Invariants and had a short Arrays Recap. Unfortunately we didn't have much time to discuss the questions in the Kahoot so below you will find the explanations.
Like every week we reviewed the exercises and discussed common mistakes we found in your submissions of week 4. We also solved an EBNF exercise from a previous exam (HS21). In addition to that we also solved a loop invariant exercise together. The slides below contain some slides that we did not cover in this weeks session.
We reviewed the exercises and discussed common mistakes we found in your submissions of week 5. We also solved an EBNF exercise from a previous exam (HS20). In addition to that we also discussed some Hoare Triple exercises from various previous exams. The slides below contain some slides that we did not cover in this weeks session, but they will be covered next week (Loop Invariants).
This week we reviewed the exercises and discussed common mistakes we found in your submissions of week 6. We then recaped Java Access Modifiers (visibility), solved some loop invariants and played a Kahoot. In the end we looked at a short EBNF exercise from a very old exam (2016). WARNING: The precondition for the second loop invariant is n > 0 and not n >= 0 (Mistake should be fixed in the slides but might not appear for you)
This week we reviewed the exercises and discussed common mistakes we found in your submissions of week 7. Then we looked at Java Inheritance and discussed the Bonus Exercise U08. We looked at an approach to solving the bonus exercise. Below you will find a PDF explaining two different approaches. The first approach can be difficult. If you are not very familiar with bit manipulations skip the first explanation and look at the second approach which should be easier to understand. I tried giving an intuition on how Hypercubes work, this might be helpful. If you have any questions, feel free to contact me :) (And of course we also played a Kahoot, link below)
This week we reviewed the exercises and discussed common mistakes we found in your submissions of week 8. Then we looked at Polymorphism and played a Kahoot. The Kahoot focused on Polymorphism and Exceptions.