Created
October 2, 2019 10:57
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Example of Delegation with overriding in Kotlin
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| fun main() { | |
| val car = Car("red", 200) | |
| val derived = Derived(car) | |
| println(derived.getColor())//red plus black | |
| println(derived.getMaxSpeed())//200 | |
| } | |
| interface Vehicle { | |
| fun getColor(): String | |
| fun getMaxSpeed(): Int | |
| } | |
| data class Car(private val color: String, private val maxSpeed: Int) : Vehicle { | |
| override fun getColor() = color | |
| override fun getMaxSpeed() = maxSpeed | |
| } | |
| class Derived(vehicle: Vehicle) : Vehicle by vehicle { | |
| private val c = vehicle.getColor() | |
| override fun getColor() = "$c plus black" | |
| } |
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