On the Welcome screen, click New Project. You will be able to add the necessary frameworks and technologies later at any time. This is a general-purpose project without specific frameworks. Create a Kotlin project without frameworks For the language itself, refer to Kotlin documentation. This page covers Kotlin support in IntelliJ IDEA. In this topic, you will find the instructions to get started with Kotlin in IntelliJ IDEA. Most of the Java tools are available for Kotlin, so, for example, if you know how to use Java debugger or refactorings, your experience will be enough to use these in Kotlin. It includes Kotlin-specific project templates, coding assistance, refactorings, debugging, analysis tools, and so on.

IntelliJ IDEA provides first-class support for Kotlin. If the plugin is not activated, enable it on the Plugins page of the IDE settings Ctrl+Alt+S as described in Install plugins. The plugin is bundled with IntelliJ IDEA and is activated by default. Before you start working with Kotlin, make sure that the plugin is enabled.

Kotlin online ide