Kotlin 예제

Bus.kt

open class Bus {
    var departure = "서울"
    var arrive = "부산"
    fun engineStart() {
        println("부릉부릉")
    }

    open fun departure() {
        println("출발합니다")
        println("$departure 에서 $arrive 로 출발합니다")
    }

}

class ExpressBus : Bus(), Vehicle {
    override fun departure() {
        super.departure()
    }

    override fun putOil() {
        println("경유 기름을 넣었습니다")
    }
}

class WideBus : Bus(), Vehicle {
    val stop1 = "판교"
    val stop2 = "두정역"


    override fun departure() {
        super.departure()
        println("정차 정류장은 $stop1 - $stop2 입니다")
    }

    override fun putOil() {
        println("경유 기름을 넣었습니다")
    }
}

class CityBus : Bus(), Vehicle {
    val stop1 = "신림역"
    val stop2 = "신도림역"
    val stop3 = "홍대입구역"

    override fun departure() {
        super.departure()

        println("정차 정류장은 $stop1 - $stop2 - $stop3 입니다")
    }

    override fun putOil() {
        println("경유 기름을 넣었습니다")
    }
}

interface Vehicle {
    fun putOil()
}

class Avante : Vehicle {
    override fun putOil() {
        println("휘발유 기름을 넣었습니다")
    }
}


fun main() {
    val terminal = arrayListOf<Bus>()

    val seoulToBusanBus = ExpressBus()
    seoulToBusanBus.departure = "서울"
    seoulToBusanBus.arrive = "부산"
    terminal.add(seoulToBusanBus)
    val seoulToCheonanBus = WideBus()
    seoulToCheonanBus.departure = "서울"
    seoulToCheonanBus.arrive = "천안"
    terminal.add(seoulToCheonanBus)




    terminal.forEach {bus ->
        bus.engineStart()
        bus.departure()
    }
}