How to convert String to Int in Kotlin?

Question

I am working on a console application in Kotlin where I accept multiple arguments in main() function

fun main(args: Array) {
    /         


        

Answer 1

As suggested above, use toIntOrNull().

Parses the string as an [Int] number and returns the result or null if the string is not a valid representation of a number.

val a: Int? = "11".toIntOrNull()   // 11
val b: Int? = "-11".toIntOrNull()  // -11
val c: Int? = "11.7".toIntOrNull() // null
val d: Int? = "11.0".toIntOrNull() // null
val e: Int? = "abc".toIntOrNull()  // null
val f: Int? = null?.toIntOrNull()  // null