Interfaces
Define and implement interfaces, functional interfaces and properties.
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kotlin interfaces
2Interface Declaration in Kotlin
An interface defines a contract that classes can implement. A Kotlin example with source code and sample output.
kotlin interfaces
3Implementing Interfaces in Kotlin
Use colon syntax to implement one or more interfaces. A Kotlin example with source code and sample output.
kotlin interfaces
4Interface Properties in Kotlin
Interfaces can declare properties without backing fields. A Kotlin example with source code and sample output.
kotlin interfaces
5Functional Interfaces in Kotlin
A functional interface (fun interface) has exactly one abstract method. A Kotlin example with source code and sample output.
kotlin interfaces
Interface Inheritance in Kotlin
Interfaces can extend other interfaces. A Kotlin example with source code and sample output.