12/Sep/2020 | 7 minutes to read
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Here is a List of essential Kotlin Interview Questions and Answers for Freshers and mid level of Experienced Professionals. All answers for these Kotlin questions are explained in a simple and easiest way. These basic, advanced and latest Kotlin questions will help you to clear your next Job interview.
These questions are targeted for Kotlin Programming Language. You must know the answers of these frequently asked basic and advanced kotlin interview questions to clear the android developer interview.
1. What is Kotlin. Why use it?
Kotlin is a general purpose cross-platform, open-source, statically typed programming language. Kotlin provides a combination of the object oriented
and functional programming features.
Why Kotlin? Kotlin make developers happy because it is:
2. What are the advantages and disadvantages of Kotlin?
3. How will you compare Kotlin vs Java?
4. Differentiate fold and reduce in Kotlin?
5. Explain the difference between val and var in Kotlin.
6. In Kotlin, How to deal with nullable values?
7. How to get a random number in Kotlin?
8. How to initialize Kotlin's Mutable list to empty Mutable list?
9. What is the equivalent of the static method of Java in Kotlin?
10. Explain Lambda (function) in Kotlin.
11. How Property Initialization works in Kotlin? Explain by lazy vs lateinit.
12. Explain Lazy Initialization and Late Initialization.
13. How to initialize a reference variable in Kotlin?
14. How to create a variable without initialization in Kotlin?
15. How to check that a lateinit variable has been initialized?
16. Why does the Kotlin compiler require explicit initialization of var property?
17. Explain delegates in Kotlin.
18. How to access val variable in the inner method?
19. What is the difference between List and Array types?
20. What is the difference between val and const in Kotlin?
21. Explain In-line function in Kotlin.
22. Explain string templates in kotlin.
23. Explain format in kotlin string templates?
24. What is data class in kotlin?
25. What resources are available to learn kotlin?
For kotlin tutorials you can visit kotlin tutorial
1. How much will you rate yourself in Kotlin?
When you attend an interview, Interviewer may ask you to rate yourself in a specific Technology like Kotlin, So It's depend on your knowledge and work experience in Kotlin. The interviewer expects a realistic self-evaluation aligned with your qualifications.
2. What challenges did you face while working on Kotlin?
The challenges faced while working on Kotlin projects are highly dependent on one's specific work experience and the technology involved. You should explain any relevant challenges you encountered related to Kotlin during your previous projects.
3. What was your role in the last Project related to Kotlin?
This question is commonly asked in interviews to understand your specific responsibilities and the functionalities you implemented using Kotlin in your previous projects. Your answer should highlight your role, the tasks you were assigned, and the Kotlin features or techniques you utilized to accomplish those tasks.
4. How much experience do you have in Kotlin?
Here you can tell about your overall work experience on Kotlin.
5. Have you done any Kotlin Certification or Training?
Whether a candidate has completed any Kotlin certification or training is optional. While certifications and training are not essential requirements, they can be advantageous to have.
We have covered some frequently asked Kotlin Interview Questions and Answers to help you for your Interview. All these Essential Kotlin Interview Questions are targeted for mid level of experienced Professionals and freshers.
While attending any Kotlin Interview if you face any difficulty to answer any question please write to us at info@qfles.com. Our IT Expert team will find the best answer and will update on the portal. In case we find any new Kotlin questions, we will update the same here.