Kotlin
What is Kotlin?
Kotlin is a modern, concise, and safe programming language developed by JetBrains. It runs on the Java Virtual Machine (JVM) and is fully interoperable with Java.
Key Features
- Statically typed: Type is checked at compile-time.
- Concise syntax: Less boilerplate code than Java.
- Null safety: Reduces
NullPointerExceptionerrors with built-in null checks. - 100% interoperable with Java: You can use all Java libraries and frameworks.
- Functional features: Supports lambda expressions and higher-order functions.
- Coroutines: Built-in support for asynchronous and concurrent programming.
Who Uses Kotlin?
- Android development: Officially supported by Google for Android apps.
- Backend development: With frameworks like Spring Boot and Ktor.
- Script: Gradle can work with kotlin kts configuration file.
Example: Hello World in Kotlin
Much simple than Java Hello World
fun main() {
println("Hello, Kotlin!")
}
Summary
| Feature | Kotlin |
|---|---|
| Platform | JVM, JavaScript, Native |
| Interoperable | ✅ Fully with Java |
| Null Safety | ✅ Built-in support |
| Used for | Android, backend, multiplatform |
Kotlin is designed to be pragmatic, safe, and expressive, making it an excellent choice for modern development.