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. Public User(String firstName, String lastName) else if (user.In your IntelliJ IDE, open the Java file that you want to convert to Kotlin. We'll create a User model object and a Repository singleton class that works with User objects and exposes lists of users and formatted user names.Ĭreate a new file called User.java under app/java/ and paste in the following code: public class User String String lastName Minimum SDK can be of any value, it will not affect the outcome. If you're using Android Studio, create a new project with the No Activity template. If you're using IntelliJ IDEA, create a new Java project with Kotlin/JVM. Note that the auto-converter in future versions of Android Studio might create slightly different results. Android Studio Bumblebee or IntelliJ IDEA.You should already be familiar with Java. In doing so you will learn the following Kotlin language features and concepts: You will learn how to convert Java to Kotlin. Then we'll take a look at the converted code and see how we can improve it by making it more idiomatic and avoid common pitfalls. We'll start with a couple of Java classes that you'll convert to Kotlin using the IDE. This codelab is suited to any developer that uses Java who is considering migrating their project to Kotlin.
You'll also learn what the Kotlin language conventions are and how to ensure that the code you're writing follows them. In this codelab, you'll learn how to convert your code from Java to Kotlin.
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