kotlin抽象类

abstract class Student(name: String, age: Int) {

    init {
        println("name:$name")
        println("age:$age")
    }

    //非抽象函数
    fun demo() {
        println("非抽象函数")
    }

    //抽象函数
    abstract fun func(message: String)
}

class School(name: String, age: Int) : Student(name, age) {
    override fun func(message: String) {
        println(message)
    }
}

fun main(args: Array<String>) {
    val obj = School("zhang", 18)
    obj.func("android")
    obj.demo()
}

输出：

name:zhang
age:18
android
非抽象函数