Hello World

fun main() 
{                        
    println("Hello, World!")        
}

• An entry point to a Kotlin application is the main function. In Kotlin 1.3, you can declare main without any parameters. The return type is not specified, which means that the function returns nothing.

• println writes a line to the standard output. It is imported implicitly. Also note that semicolons are optional.

In Kotlin versions earlier than 1.3, the main function must have a parameter of type Array<String>.

fun main(args: Array<String>) 
{
    println("Hello, World!")
}