Kotlin Blueprints

Companion object

Companion is a keyword used in Kotlin. An object declaration inside a class can be marked as a companion object. All members of the companion object can be called using the class name directly. Sounds like static!

    class MyClass {      companion object Factory {        fun create(): MyClass = MyClass()      }    }

Calling can look as follows: 

    val instance = MyClass.create()

The name of a companion object can be omitted. There can be multiple companion objects inside a single class and they should have a name in this case.