ISP.kt

interface Payment {
    val paymentName: String
}

interface Bank: Payment {
    val noCard: Int
}

interface Digital: Payment {
    val tagname: String
}

class Mandiri: Bank {
    override val paymentName = "Mandiri"
    override val noCard = 12345
}

class OVO: Digital {
    override val paymentName = "OVO"
    override val tagname = "@kampusmerdeka"
}

fun main() {
    val ovo = OVO()
    println(ovo.paymentName)
    
    val mandiri = Mandiri()
    println(mandiri.paymentName)
}

no-ISP.kt

interface Payment {
    val paymentName: String
    val noCard: Int
}

class Mandiri: Payment {
    override val paymentName = "Mandiri"
    override val noCard = 12345
}

class OVO: Payment {
    override val paymentName = "OVO"
    override val noCard = 4312121 // no card??
}

fun main() {
    val ovo = OVO()
    println(ovo.paymentName)
    
    val mandiri = Mandiri()
    println(mandiri.paymentName)
}