Kotlin — Introduction
What is Kotlin
Kotlin is a modern, statically typed programming language that runs on the JVM, Android, JavaScript, and native platforms. Developed by JetBrains and released in 2011, it's fully interoperable with Java.
Why learn Kotlin
- Concise syntax — write less code than Java
- Null safety — eliminates null pointer exceptions
- Coroutines — built-in async/await support
- Multiplatform — share code across platforms
- Official Android language — Google's preferred choice
- Fully interoperable with Java
Hello, World
fun main() {
println("Hello, World!")
}
Where Kotlin is used
- Android development — official language since 2019
- Backend services — Spring Boot, Ktor
- Multiplatform — share code across platforms
- Web — Kotlin/JS and Kotlin/WASM
- Native — Kotlin/Native for iOS and desktop
Kotlin Playground
Try Kotlin in the browser at play.kotlinlang.org.
Mini Practice
- Install Kotlin or use the online playground
- Write and run a "Hello, World!" program
- Explore the Kotlin Playground online
Up Next
In the next lesson, you'll learn about Get Started — setting up your Kotlin development environment.
Related Topics
Frequently Asked Questions about Introduction
What is Introduction in Kotlin?
Introduction is a fundamental concept in Kotlin. This lesson explains it step by step with clear examples, making it easy for beginners to understand.
How do I learn Introduction?
Start by reading the explanation above, then try the code examples. Practice by modifying the examples and experimenting with different values. Hands-on practice is the best way to learn Introduction.
Why is Introduction important in Kotlin?
Introduction is essential for Kotlin development. Understanding this concept will help you write better code and solve real-world problems more effectively.