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Hands-On Object-Oriented Programming with Kotlin

You're reading from   Hands-On Object-Oriented Programming with Kotlin Build robust software with reusable code using OOP principles and design patterns in Kotlin

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Product type Paperback
Published in Oct 2018
Publisher Packt
ISBN-13 9781789617726
Length 370 pages
Edition 1st Edition
Languages
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Authors (2):
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Abid Khan Abid Khan
Author Profile Icon Abid Khan
Abid Khan
Igor Kucherenko Igor Kucherenko
Author Profile Icon Igor Kucherenko
Igor Kucherenko
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Toc

Table of Contents (14) Chapters Close

Preface 1. Getting Started with Kotlin 2. Introduction to Object-Oriented Programming FREE CHAPTER 3. The Four Pillars of Object-Oriented Programming 4. Classes - Advanced Concepts 5. Data Collection, Iterators, and Filters 6. Object-Oriented Patterns in Kotlin 7. Coroutines - a Lightweight Thread? 8. Interoperability 9. Regular Expression and Serialization in Kotlin 10. Exception Handling 11. Testing in Object-Oriented Programming with Kotlin 12. Assessments 13. Other Books You May Enjoy

Constructing a class with a constructor

When an object is created, all class members have to have an initial value. We can either initialize a property directly or the initial values can be provided by a constructor. A constructor is a special type of function that is used to initialize the properties of the class.

A constructor is invoked when the object is created, or, more specifically, when the space is allocated in the memory. This special function has two important characteristics:

  • Constructors can be declared with the constructor keyword
  • Constructors don't contain any return types, not even Units

In this section, we will learn about all of the different kinds of constructors that are provided by Kotlin. Let's start with the default constructor.

Default constructor...

You have been reading a chapter from
Hands-On Object-Oriented Programming with Kotlin
Published in: Oct 2018
Publisher: Packt
ISBN-13: 9781789617726
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