Creating an arrayOf from multiple variables on the same line

Question

I'm trying to learn Kotlin from Python and I need some help with how to create an array of different types using scanner class but keep getting an error java.lang.ArrayIndexOutOfBoundsException. Thanks in advance.

fun main(){

    val scanner = Scanner(System.`in`)
    println("Enter your name: ")
    println("Enter your height in inches: ")
    println("Enter your weight: ")
    val (name, height, weight) = arrayOf(scanner)
    println("your name is $name, your height is: $height your weight is $weight")

}

Are you struggling with having different types? Or creating an array with the users inputs? Because arrayOf(scanner) is just an array with your single scanner instance. — Henry Twist
– Henry Twist, Commented Mar 21, 2021 at 16:56
The issue i'm having is creating the array with multiple values. Should I be using a for loop for each value instead of val (name, height, weight)? I can convert the types later in my program. All i'm trying to do for now is create the array, or does it need to be a list? — mxgenius
– mxgenius, Commented Mar 21, 2021 at 18:04

Jagar · Accepted Answer · 2021-03-21 18:33:05Z

1

Well in Kotlin, as well in Java, it is a bit different to get the input from the scanner, so try this:

val reader = Scanner(System.`in`)
    println("Enter your name: ")
    println("Enter your height in inches: ")
    println("Enter your weight: ")

    val (name, height, weight) = arrayOf(reader.next(), reader.nextInt(), reader.nextInt())
    println("your name is $name, your height is: $height your weight is $weight")

So if you wanted to wait for the inputs, you need to declare variables after `print()` or `println()` and init it to `scanner.next()` functions, then at the end you create your array in a single line using the variables.

answered Mar 21, 2021 at 18:33

Jagar

94014 silver badges28 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Creating an arrayOf from multiple variables on the same line

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related