Kotlin Try/Catch expression

snippet.kt

// the returned value is the last expression of the try or catch block
val a: Int? = try { parseInt(input) } catch (e: NumberFormatException) { null }

fun printNumber(reader: BufferedReader) {
  
  val number = try { 
    parseInt(reader.readLine())
  } catch (e: NumberFormatException) {
    return
  }
  
  println(number)
}