Now, in the main menu, click on Code menu and choose the Convert Java File to Kotlin File option. So, it is recommended to convert the Kotlin code to Java code with the help of IntelliJ IDEA.ĭo share this blog with your fellow developers to spread the knowledge. Let's see the steps to convert a Kotlin file to a Java file: In your IntelliJ IDE, open the Java file that you want to convert to Kotlin. The above method will generate the Java file but the code will be complicated to understand. Download theĪfter downloading the jar file, run the below command to get the Java file, out of your Now, we need to decompile the class file generated after the first step. To use Fernflower, follow the below steps: But the demerit of this method is that you will not get the pure Java file and you need to manually download the Fernflower jar file. So, instead of using the IntelliJ IDEA, we can directly use Fernflower. Kotlin is designed to interoperate fully with Java. Under the hood, the IntelliJ IDEA uses the Fernflower. Complex Java Code can be converted to Kotlin using this tool. Just go to Code > Convert Java File To Kotlin. You will get the bytecode of your Kotin file.īutton to get your Java code from the bytecode. Step 3: Auto Convert with Android Studio Now, you can use Android Studio to convert your Java class to Kotlin. Open your Kotlin project in the IntelliJ IDEA / Android Studio. Steps to convert your Kotlin source file to Java source file: To integrate some feature that can be easily implemented in Java. So, it becomes easy to convert the Java code into Kotlin and vice-versa.įollowing are some of the advantages or reasons for converting Kotlin code to Java code: compiling the Kotlin code to the JVM bytecode and then decompile the bytecode to the Java code. Converting a Kotlin file to Java file involves two steps i.e.
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