package loaderman.bar

class Singlenton private constructor(){

    public var value:Singlenton?=null

    private object mHolder{

        val INSTSNCE=Singlenton()

    }

    companion object Factory{

        fun getInstance():Singlenton{

            return mHolder.INSTSNCE

        }

    }

}

package loaderman

import loaderman.demo.Customer

import loaderman.demo.Singlenton

fun main(arg: Array<String>) {

    //Singlenton()//编译错误 由于主构造器使用private，无法直接调用主构造器

    val instance1 = Singlenton.getInstance()

    val instance2 = Singlenton.getInstance()

    println(instance1)

    println(instance2)

}