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Learn Kotlin Programming

You're reading from   Learn Kotlin Programming A comprehensive guide to OOP, functions, concurrency, and coroutines in Kotlin 1.3

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Product type Paperback
Published in May 2019
Publisher Packt
ISBN-13 9781789802351
Length 514 pages
Edition 2nd Edition
Languages
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Authors (2):
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Stefan Bocutiu Stefan Bocutiu
Author Profile Icon Stefan Bocutiu
Stefan Bocutiu
Stephen Samuel Stephen Samuel
Author Profile Icon Stephen Samuel
Stephen Samuel
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Toc

Table of Contents (21) Chapters Close

Preface 1. Section 1: Fundamental Concepts in Kotlin FREE CHAPTER
2. Getting Started with Kotlin 3. Kotlin Basics 4. Object-Oriented Programming in Kotlin 5. Section 2: Practical Concepts in Kotlin
6. Functions in Kotlin 7. Higher-Order Functions and Functional Programming 8. Properties 9. Null Safety, Reflection, and Annotations 10. Generics 11. Data Classes 12. Collections 13. Testing in Kotlin 14. Microservices with Kotlin 15. Section 3: Advanced Concepts in Kotlin
16. Concurrency 17. Coroutines 18. Application of Coroutines 19. Kotlin Serialization 20. Other Books You May Enjoy

Exception handling

Handling of exceptions is almost identical to the way Java handles exceptions with one key difference-in Kotlin all exceptions are unchecked.

As a reminder, checked exceptions are those that must be declared as part of the method signature or handled inside the method. A typical example would be IOException, which is thrown by many File functions, and so ends up being declared in many places throughout the IO libraries.

Unchecked exceptions are those that do not need to be added to method signatures. A common example would be the all too familiar NullPointerException, which can be thrown anywhere. If this was a checked exception, literally every function would need to declare it!

In Kotlin, since all exceptions are unchecked, they never form part of function signatures.

The handling of an exception is identical to Java, with the use of try, catch, and finally...

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