How To - Kotlin to Java Converter Online

So, there’s at the time of writing two ways of converting Kotlin source files to Java. If you’ve got Android Studio installed, I’d recommend Option 1.

Option 1

• Open Android Studio
• Menu - Tools > Kotlin > Kotlin Bytecode (assuming you have the Kotlin plugin)
• In the new window that’s just opened, click the Decompile button
• Et voila! You now have a Java equivalent of your source ✔

Option 2

• Convert your Koltin source file to bytecode
• Use either IntelliJ Idea (IDE from JetBrains), or a open source decompiler such as Fernflower

Notes

• The Java output is likely quite ugly, unfortunately that’s just the nature of a machine generating code
• If the option is greyed out, ensure the Kotlin class is compiled
• The code could be misleading, and remove intentional patterns, ideally the code should be used to give you guidance but not as production ready code