Back-End Programming Exam > Back-End Programming Videos > Kotlin Tutorial for Beginners: Learn Kotlin in easy language > #8.12 Kotlin Programming for Android: COMPANION OBJECT- Let's be static
#8.12 Kotlin Programming for Android: COMPANION OBJECT- Let's be static Video Lecture | Kotlin Tutorial for Beginners: Learn Kotlin in easy language - Back-End Programming
FAQs on #8.12 Kotlin Programming for Android: COMPANION OBJECT- Let's be static Video Lecture - Kotlin Tutorial for Beginners: Learn Kotlin in easy language - Back-End Programming
| 1. What is a companion object in Kotlin? |  |
Ans. In Kotlin, a companion object is an object that is declared within a class and can be accessed using the class name itself. It is similar to the static members in Java and can be used to define static methods and properties.
| 2. Can a companion object have its own properties and functions? | |
Ans. Yes, a companion object in Kotlin can have its own properties and functions. These properties and functions can be accessed using the class name and the companion object name together.
| 3. How is a companion object different from an object declaration in Kotlin? | |
Ans. A companion object is declared within a class and is associated with that class, while an object declaration is a standalone object that is not associated with any particular class. Companion objects can access private members of the class, whereas object declarations cannot.
| 4. Can a companion object implement an interface in Kotlin? | |
Ans. Yes, a companion object in Kotlin can implement an interface. However, since companion objects cannot be instantiated, the interface methods can only be accessed using the class name and the companion object name together.
| 5. Is it possible to access the companion object without using the class name in Kotlin? | |
Ans. No, the companion object in Kotlin cannot be accessed without using the class name. The purpose of a companion object is to associate it with a specific class, so it can only be accessed using the class name and the companion object name together.
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Nov 22, 2024 Last updated |
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