This article details my experience in this process. I started to think that it would be worthwhile to convert one of my applications over to Kotlin. At IO17 I attended a few of the sessions on Kotlin and also did a few of the Code Labs and came away thinking this is a neat language. One of the big announcements was that Kotlin was now fully supported by Google for use in Android. This is also the reason why you can, in a way, get Java code back from Kotlin (although the output is not completely desired).Earlier this year I was fortunate to be able to attend Google IO once again. This is the reason we can convert Java code to Kotlin and mix Java and Kotlin code together. Kotlin is a statically-typed programming language that works on Java Virtual Machine and compiles into JVM compatible bytecode. java file and remove the unnecessary code. At the moment, this is the only way to convert Kotlin code to Java. Yes, it has a lot of unnecessary code that was not present in the original Java code, but that is the case with decompiled bytecode. java file will be generated, containing a decompiled Java bytecode from Kotlin code: If you have to absolutely convert your Kotlin code to Java, click on Tools | Kotlin | Show Kotlin Bytecode in the menu:Īfter clicking on Show Kotlin Bytecode, a window will open with the title Kotlin Bytecode:Ĭlick on Decompile and a. kt.Īfter converting to Kotlin, this is what we have:Ī Kotlin file can be converted into Java, but it’s better if you can avoid it or find an alternative way to do it. Your Java file will be converted into Kotlin, and the extension will now be. Now, in the main menu, click on Code menu and choose the Convert Java File to Kotlin File option. In your IntelliJ IDE, open the Java file that you want to convert to Kotlin.
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