It’s pretty straight forward, but in Kotlin there are a few different ways to solve the problem of defining a logger. Ready to go from Java to Kotlin In this video, you'll see how easy it is to convert Java to Kotlin in Android Studio and to convert Java to Kotlin in IntelliJ. In Java, having a static property for something like a Logger is a very common use case. You go in Tool -> Kotlin -> Configure Kotlin in Project. It was our first Kotlin migration and getting to know the Kotlin language better was/is a lot of fun, but also confusing at times. Jetbrains has implemented a Kotlin file converter into their Intellij IDEA, allowing automatic refactoring of Java files into Kotlin with minimal effort - fu. Encapsulated JDK internal APIs Java 16 and Java 17 encapsulate JDK internal APIs, which impacts various frameworks such as Lombok. However, I expect that Java 17 support will be added soon. It will convert the Java file to a Kotlin file. Step-2: It will show you a popup that some code in the project may require correction and do you want to find and correct such code. Kotlin is designed to interoperate fully with Java, and the JVM version of Kotlin's standard library depends on the Java Class Library, but type inference allows its syntax to be more concise. Right-click on the Java file and click on Convert Java File to Kotlin File to convert it to Kotlin. Online Java to Kotlin Converter Kotlin is a cross-platform, statically typed, general-purpose programming language with type inference. One thing worth doing is to make sure the SAM is annotated with FunctionalInterfaceso that IntelliJ can validate if the annotated target always satisfies the definition of a SAM. Sometimes it’s possible to work around that, for instance, by specifying Java 16 as the JVM target for Kotlin. Step-1: Open the project on Intellij-IDEA. While doing so we’ve learned quite a few things along the way and I created some notes that I wanted to share in case somebody else runs into the same issues. Less worry for you if you are not planning to convert SAM interface to Kotlin yet (say in an external dependency). Development Migrating a Spring Boot service from Java 11 to KotlinĪt my current project we’ve just finished migrating a Spring Boot 2.1.x service from Java 11 to Kotlin. Convert Java to Kotlin IntelliJ IDEA allows you to automatically convert your Java code to Kotlin.
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