Реализации на Kotlin

Adapter

Общая реализация на языке Kotlin

IThermometer

interface IThermometer {
    val temperature: Double
}

CelsiusThermometer

class CelsiusThermometer : IThermometer {
    override val temperature: Double = DEFAULT_TEMPERATURE

    companion object {
        private const val DEFAULT_TEMPERATURE: Double = 15.0
    }
}

ITempAdapter

interface ITempAdapter {
    val temperature: Double
}

FahrenheitTempAdapter

class FahrenheitTempAdapter(
    private val thermometer: IThermometer
) : ITempAdapter {
    override val temperature: Double = thermometer.temperature * FACTOR + LINEAR_COEFFICIENT

    companion object {
        private const val FACTOR = 1.8
        private const val LINEAR_COEFFICIENT = 32.0
    }
}

fun main() {
    val thermometer: IThermometer = CelsiusThermometer()
    println("Temperature in celsius: ${thermometer.temperature}")
    val adapter: ITempAdapter = FahrenheitTempAdapter(thermometer)
    println("Temperature in fahrenheit: ${adapter.temperature}")
}