继承Kotlin中具有多个变量的抽象类

abstract class AbstractClass {
    abstract val abstractProperty: String
    val concreteProperty: Int = 42

    abstract fun abstractMethod()
    fun concreteMethod() {
        println("This is a concrete method.")
    }
}

class ConcreteClass : AbstractClass() {
    override val abstractProperty: String = "This is an implementation of abstract property."

    override fun abstractMethod() {
        println("This is an implementation of abstract method.")
    }
}

fun main() {
    val instance = ConcreteClass()
    println(instance.abstractProperty)
    println(instance.concreteProperty)
    instance.abstractMethod()
    instance.concreteMethod()
}

This is an implementation of abstract property.
42
This is an implementation of abstract method.
This is a concrete method.