How to Use println in Kotlin: Simple Guide

In Kotlin, you use println() to print text or values to the console. Just put what you want to show inside the parentheses, like println("Hello"), and it will display on a new line.

Syntax

The println() function prints the given message and moves to the next line. You put the message inside parentheses and quotes if it is text.

• println: the function name
• ( ): parentheses hold the message
• "message": text to print, must be in quotes

kotlin

println("Your message here")

Example

This example shows how to print a simple greeting and a number using println(). Each call prints on a new line.

kotlin

fun main() {
    println("Hello, Kotlin!")
    println(123)
}

Output

Hello, Kotlin!
123

Common Pitfalls

Common mistakes include forgetting quotes around text, which causes errors, or using print() when you want a new line after the message.

kotlin

// Wrong: missing quotes around text
// println(Hello)

// Right: text inside quotes
println("Hello")

// print() does not add a new line
print("Hello")
print(" World")

// println() adds a new line
println("Hello")
println("World")

Output

Hello World
Hello
World

Quick Reference

Function	Description
println(message)	Prints message and moves to next line
print(message)	Prints message without moving to next line
println()	Prints a blank line

Key Takeaways

Use println() to print messages with a new line in Kotlin.

Put text messages inside quotes within println().

Use print() if you want to print without a new line.

Forgetting quotes around text causes errors.

println() is simple and useful for quick console output.