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Public User(String firstName, String lastName) else if (user.

Kotlin is designed to interoperate fully with Java. 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 Complex Java Code can be converted to Kotlin using this tool. 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. The Java sample is from University of Texas: Java samples specifically this one: UnsortedHashSet sample. We'll look at the differences from the perspective of a Java developer. 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. To convert the Java code to Kotlin, it uses the option Convert Java File to Kotlin File (Ctrl + Alt + Shift + K) from the Code menu in the Android Studio. I'm going to convert Java to Kotlin using the Community Edition of IntelliJ (2021.3.2). 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.