Kotlin : Public get private set var

Question

What is the correct way to define a var in kotlin that has a public getter and private (only internally modifiable) setter?

Answer 1

var setterVisibility: String = "abc" // Initializer required, not a nullable type
    private set // the setter is private and has the default implementation

See: Properties Getter and Setter

Answer 2

You can easily do it using the following approach:

var atmosphericPressure: Double = 760.0
    get() = field
    private set(value) { 
        field = value 
    }

Look at this story on Medium: Property, Getter and Setter in Kotlin.

Answer 3

var name : String = "Peter"
    private set

By default all properties and functions are public in Kotlin. Hence the setter has to be explicitly declared private while the getter is public by default.