Portfolio


fun main() {
    for (i in 1..3) {
        print(i)
    }
    throw Exception("Hi There!")
}


123Exception in thread "main" java.lang.Exception: Hi There!


try {
    // some code
} catch (e: SomeException) {
    // handler
} finally {
    // optional finally block
}


val a: Int? = try { input.toInt() } 
							catch (e: NumberFormatException) { null }


val s = person.name ?: throw IllegalArgumentException("Name required")


fun fail(message: String): Nothing {
    throw IllegalArgumentException(message)
}


val s = person.name ?: fail("Name required")
println(s)     // 's' is known to be initialized at this point


val x = null           // 'x' has type `Nothing?`
val l = listOf(null)   // 'l' has type `List<Nothing?>

Exceptions