SingletonInKotlin.kt

main() {
  
    /*
    object classes example
    */
    val singleton = SingletonClass.age
    println(singleton)
    SingletonClass.updateAge(20)
    println(SingletonClass.age)
    
}

/*
One create single instance of this class like Singleton Design Pattern
*/
object SingletonClass {
    var age: Int = 27
    fun updateAge(age: Int) {
        this.age = age
    }
}