How does this converter work? It compiles your kotlin code to java bytecode, next it uses jar fernflower to decompile bytecode to java. If you have another reason, you can indicate it in a comment! Another reason can be the case where we don't understand a piece of kotlin code, and we hope to understand it in java. We can also consider the fact that we want to remove Kotlin to keep only Java source code. For exemplet to integrate some feature in Java (instead of Kotlin), or to investigate a performance issue. Why convert Kotlin to Java? There can be different reasons for doing this conversion. The currently released version is 1.6.10 (published on December 14, 2021). Is Kotlin hard? It is not a complicated language, it is inspired by existing languages such as C#, Groovy, Java, JavaScript and Scala. Native ? Kotlin/Native is a technology for compiling Kotlin code to native binaries which can run without a virtual machine! It is still in beta. While Java has earned its reputation as a. Its very expressive and much more concise than Java. When to use kotlin? Kotlin can be used for any kind of development, be it client-side (With JavaScript), server-side (JVM), Android, embedded systems (With Kotlin/Native), mobile applications. Kotlin is a powerful, modern language with many useful features. It has been developed under the Apache 2.0 license and perfected for more than 5 years by the company JetBrains. It is designed to interoperate fully with Java, but it also targets Android, JavaScript and Native. This language is intended to be concise (Rough estimates indicate approximately a 40% cut in the number of lines of code) and 100% interoperable with the Java programming language. Īfter that, we’ll see the file SampleKt.java: import kotlin.Kotlin is a general-purpose programming language with type inference. Once we have the JAR file, the command to run is: java -jar fernflower.jar SampleKt.class. We can get the fernflower.jar by downloading the project and running the Gradle build. Now, we need to decompile this file to Java.

Online compiler kotlin