With a Java file open in the editor, go to the main menu and select Code | Convert Java File to Kotlin File or press Control+Alt+Shift+K. If you are not satisfied with the result of conversion, you can roll it back with Control+Z. The resulting code is not supposed to be perfect, however, it may be helpful in some situations. IntelliJ IDEA allows you to automatically convert your Java code to Kotlin. The first time you create a Kotlin file in the project, a notification appears to confirm that the Kotlin configuration is ready.įor other build tools, follow the steps in: If your project uses the IntelliJ IDEA build tool, it adds the Kotlin dependency automatically. Add Kotlin dependency to an existing JVM project In order to start using Kotlin in your project, make sure that the Kotlin plugin is enabled and the Kotlin dependency is added to your project. For more information, refer to Calling Java from Kotlin and Calling Kotlin from Java in the Kotlin language documentation. The peculiarities of Kotlin/Java interop at the language level are not covered in this topic. This enables you to gradually transition a project to Kotlin or use both languages in parallel, for example, by using Kotlin for testing an existing Java codebase. You can call Java code from Kotlin and vice versa. You can also enable the Generate code with onboarding tips option to add some additional useful comments to your sample code. If you don't have the necessary JDK on your computer, select Download JDK.Įnable the Add sample code option to create a file with a sample Hello World! application. If the JDK is installed on your computer, but not defined in the IDE, select Add JDK and specify the path to the JDK home directory. For Gradle, choose a language for the build script: Groovy or Kotlin.įrom the JDK list, select the JDK that you want to use in your project. If you want to create a more complex project that needs further configuration, select Maven or Gradle. It's a native builder that doesn't require downloading additional artifacts. You will be able to do it later at any time. Select the Create Git repository checkbox to place the new project under version control. OpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9. Program FilesJetBrainsIntelliJ IDEA 2020.3.2bin' C:Program FilesJetBrainsIntelliJ IDEA 2020.3.2bin>.idea.bat. Name the new project and change its location if necessary. Community IntelliJ IDEA Users Intellij IDEA will not open / Wont start on windows 10 Answered. Otherwise, from the main menu, select File | New | Project.įrom the list on the left, select New Project. 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.
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