Welcome to the quiz on Kotlin Inheritance and Subclassing! This quiz will test your understanding of how inheritance works in Kotlin, including concepts like subclassing, the open keyword, method overriding, and the use of constructors in parent and child classes. By taking this quiz, you will reinforce your knowledge of creating class hierarchies and extending classes to add new functionality.
1.
Why is the 'open' keyword required before a function to allow it to be overridden?
2.
How do you call a superclass method from an overridden method in Kotlin?
3.
What is the difference between 'open' and 'override' in Kotlin?
4.
Which of the following correctly defines a subclass in Kotlin?
5.
What keyword is used in Kotlin to allow a class to be subclassed?
6.
What is the purpose of subclassing?
7.
What is required when creating a subclass that has a constructor with parameters?
8.
What is a class hierarchy?
9.
What is single inheritance in Kotlin?
10.
What must be included in the subclass if the parent class has a secondary constructor?
11.
Which keyword is used to access the parent class's properties or methods in Kotlin?
12.
Why might you want to override a method in a subclass?
13.
Which of the following is true about the 'super' keyword in Kotlin?
14.
What is inheritance in Kotlin?
15.
What is the benefit of using a secondary constructor in a subclass?
16.
Which of the following correctly creates a secondary constructor in a subclass?
17.
Which method in a subclass allows calling a method with the same name from the parent class?
18.
What happens if you try to override a method that is not declared as 'open' in the parent class?
19.
What is the term for a class from which a subclass is derived?
20.
What is the base class from which all classes in Kotlin are ultimately derived?
21.
How do you override a method in Kotlin?
