I'm a total beginner with kotlin, and I'm trying to initialize an array using the constructor that accepts a size and a function. This is what I have:
fun main(args: Array<String>) {
var ary = Array(5, {x -> x + 2})
println(ary[2])
}
But it's throwing a null pointer exception on the first line. Why is this happening?
EDIT: I'm the original poster's professor, and we're trying to get this working together. Here's some more info:
I've edit the code above to be the full program. The version of Kotlin we have installed on our server is:
$ kotlinc -version
info: kotlinc-jvm 1.2.70 (JRE 1.8.0_144-jdk_2017_08_24_20_46-b00)
When I try to compile and run from the command line I get:
$ kotlinc example.kt -include-runtime -d example.jar
$ java -jar example.jar
Exception in thread "main" java.lang.NullPointerException
at ExampleKt.main(example.kt:2)
I'll note that this code compiles just fine for me on my laptop, which has an older version of Kotlin.
4.