Define multiple variables at once in Kotlin (e.g Java : String x,y,z;)

I was wondering if there is any way to define multiple variables in Kotlin at once like in Java and almost every other existing language in the world .

like in Java :

String x = "Hello World!", y = null, z;

You can declare (and assign) multiple variables in one line by using semicolons (;):

val number = 42; val message = "Hello world!";

You can also declare (and assign) multiple properties in the same line similarly:

class Example {
    var number = 42; var message = "Hello world!";
}

A runnable example illustrating both insights that you can [try online at tio.run][TIO-k9uvkon6] (it also worked fine in my local environment using Kotlin version 1.1.2-5 (JRE 1.8.0_144-b01)):

class Example {
// declaring multiple properties in a single line
var number:Int; var message:String;



// constructor that modifies the parameters to emphasize the differences
constructor(_number:Int, _message:String) {
    number = _number * 2
    message = _message.toUpperCase()
}




}




fun main(args: Array<String>) {
// declaring multiple read-only variables in a single line
val number = 42; val message = "Hello world!";
 
// printing those local variables
println("[main].number = " + number)
println("[main].message = " + message)
 
// instantiating an object and printing its properties' values
val obj = Example(number,message)
println("[Example].number = " + obj.number)
println("[Example].message = " + obj.message)
}
fun main(args: Array<String>) {
// declaring multiple read-only variables in a single line
val number = 42; val message = "Hello world!";
 
// printing those local variables
println("[main].number = " + number)
println("[main].message = " + message)
 
// instantiating an object and printing its properties' values
val obj = Example(number,message)
println("[Example].number = " + obj.number)
println("[Example].message = " + obj.message)
}

Execution output:

[main].number = 42
[main].message = Hello world!
[Example].number = 84
[Example].message = HELLO WORLD!

[TIO-k9uvkon6]: https://tio.run/##fVJPT8IwFL/vUzy5uClCQjyBmhhjomfjyRjz2B5Q7dql7VQ0fPb5WsrGDLpT2/f72/VNOylU0@QSrYXbTywrSfCdAH/jMRTEAyPUEspaOuFnldEVGSfIglCAYHnKx6xCgfWOBlRdzslM75WbhX1J1uKSpg/Oa82SnXyulXWmzp024FbooNSFWHhpt2InNFiSI8NbDVRWK7Tii8KMYQsypHKyQWxPKX3p7Ifw0vfOYjf/bWFwCZEAJzBph5Hmp3E5cvqx4uo3aCnNAnCTbJJkUSsoUagUzdJO4doYXF9s3a6yf6/SEBZnWsm1vySBc/n3ncou7flkFg66hIM7klLDhzayOBrMAmVnW7Gl865upS1L6pyprV1ABYhU6eDJ13getU4DOI222UHgXgJGxl3Wsxf8W5ADYMiACvT8lXLHq6KLJpzde1bHvl0ds/miTGGL@DbTbaBhz60LFlG/SrDC6HCRFt/v4gmtw6ZpfgA "Kotlin – Try It Online"

As a contradictory side note, in this question and answer, JetBrains' Engineer yole states that:

> "Declaring multiple properties on the same line is frowned upon by > many Java style guides, so we did not implement support for that in > Kotlin."

Note that his answer is more than 4-years old, so there could have been changes since then.

Try this:

fun main() {
    val (x, y, z) = listOf(1, true, "Sam")    //can be "arrayOf(), "Pair()" or other types
    println("$x, $y, $z")
}

Output：

1, true, Sam

You might also find "Destructuring declarations" helpful here.

An example:

val (name, age) = person

More detail at https://kotlinlang.org/docs/destructuring-declarations.html.