Kotlin Programming Cookbook

How to do it...

Create a file and name it ifWithKotlin.kt. You can name it anything; it need not be the same as the class name because it is in Java. Now, to get started, you should always declare the main method because the Java virtual machine starts execution by invoking the main method of the specified class.

The main method is as follows:

fun main(args: Array<String>) { }

1. Let's try a basic if statement in a traditional way to understand how it works:

fun main(args: Array<String>) {     var x:Int     if(10>20){         x = 5     }     else{         x = 10     }     println("$x") }

In this code block, we assign a value to x in the if and else block and then print it.

2. Now, let's try the same thing the Kotlin way:

fun main(args: Array<String>) {      var x:Int = if(10>20)  5  else ...