Singleton class in Kotlin

Question

I want to know way to create singleton class, so that my Util class instantiate only once per app. However when I converted my Java class to kotlin, below code was generated

Answer 1

 class TestMySingleton private constructor() {
​
   companion object {
        var single = TestMySingleton()

        fun getInstance(): TestMySingleton {
            if (single == null)
                single = TestMySingleton()
            return single
        }
    }

}