Kotlin Academy · Lesson

Your First Kotlin Program: main, println & Input

Write a complete Hello World, read console input, and print formatted output.

The main Function

Every standalone Kotlin program starts at fun main(). The JVM calls this function when the program launches.

fun main() {
    // your code here
}

The classic first program. println writes a line of text to the console followed by a newline.

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