Backend2026-05-17
Kotlin
Also known as: Kotlin / コトリン
A JVM language by JetBrains offering full Java interoperability alongside concise syntax, null safety, and coroutines. Adoption is growing through Android first-class support and Spring Boot integration.
Overview
Kotlin gained widespread adoption when Google designated it the official language for Android development. On the server side it is used with Spring Boot or the Kotlin-native Ktor framework for API servers.
Swift and Kotlin in Cross-Platform Dev
Capacitor native plugin development uses Kotlin for the Android native code layer. See Capacitor native plugin development guide for a practical walkthrough.
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