What Is Kotlin Used For And How To Apply It
Kotlin may also inject an assertion into the code at compile time to avoid triggering an actual null pointer exception. There’s no explicit language notation for a platform type, but in the event Kotlin has to report a platform type, such as in an error message, it appends ! Up until May 2017, the only officially supported programming languages for Android were Java and C++. Google announced official support for Kotlin on Android at Google I/O 2017, and starting with Android Studio 3.0 Kotlin is built into the Android development toolset.
The intention was that Java developers and their organizations could gradually transition to the new language without having to worry about incompatibility. Coroutines are a Kotlin feature that simplifies asynchronous programming. They allow developers to write non-blocking code in a sequential manner, improving readability and performance. Kotlin can be used with Deep Learning for Java (DL4J), enabling complex neural network designs and training.
For almost anyone doing Android development, the advantages of Kotlin are compelling. The typical rough estimate indicates approximately a 40% cut in the number of lines of code from Java to Kotlin. Originally, Kotlin’s creator, Dmitry Jemerov, required features Java didn’t have.
Note that in this case the resulting bytecode might not run on lower versions. Starting with Kotlin 1.5, the compiler does not support producing bytecode compatible with Java versions below 8. Our Learn Kotlin course is perfect if you’re a new developer or new to the Kotlin language. It’ll introduce you to fundamental programming concepts and teach you how to write Kotlin code. Kotlin was designed to be a better language than Java and interoperable with Java. Its simplicity and interoperability were the incentives to learn Kotlin.
What exactly is Kotlin?
This means that from one Kotlin code base, you’ll be able to compile apps that run on not just Android phones but also iPhones and the Apple Watch. This project is currently in the alpha stage but has a lot of promise. As we mentioned, Kotlin is the preferred language for Android development as it allows developers to write more concise, expressive, and safer code. Kotlin introduces the concept of extension functions, allowing developers to add new functions to existing classes without modifying their source code. This is particularly useful for extending Android’s built-in classes.
Kotlin has quickly risen to prominence as the preferred language for Android app development. In my opinion, non-nullability is one of the greatest Kotlin features. This feature saves time because developers don’t have to handle NullPointerExceptions (which are RuntimeExceptions).
Desktop Applications With TornadoFX
The type-safety of Kotlin enhances the robustness of deep learning models. The framework comes with a host of extensions and utilities that streamline common tasks, from managing resources to handling UI component properties. Ktor is a modern and lightweight web framework designed for building asynchronous servers and clients in Kotlin. Developers can create React components using Kotlin, which provides a type-safe way to build web applications. Kotlin’s data classes simplify this process, automatically generating hashCode(), equals(), and toString() methods.
- Allowing top-level functions is just the beginning of the functional programming story for Kotlin.
- DoorDash has a great case study of migration from monolithic architecture to microservices with Kotlin.
- As in C, C++, C#, Java, and Go, the entry point to a Kotlin program is a function named «main», which may be passed an array containing any command-line arguments.
- Extension functions provide the C#-like ability to extend a class with new functionality without having to inherit from the class or use any type of design pattern such as Decorator.
Kotlin has support for data visualization libraries like Lets-Plot, enabling graphical representation of data, which is vital for analysis and understanding. Ktor is built on Kotlin’s coroutines, enabling non-blocking endpoint handling. This results in better performance and scalability for Ktor applications. Kotlin/JS provides mechanisms for dynamic type casting in scenarios where precise types are unknown or mixed.
Is Kotlin Better Than Java?
In other words, Kotlin has all of the features and advantages of a functional language. For example, consider the following functional Kotlin idioms. Another major advantage of Kotlin is its safety features for null values. Null pointer exceptions are one of the most prevalent problems in Java projects. NullPointerException is an error generated in Java when the code tries to access an object with a null reference.
A microservice architecture is a software architectural style that structures a back-end application as a collection of services that are independently deployable and highly maintainable. DoorDash has a great case study of migration from monolithic architecture to microservices with Kotlin. That you are free to migrate your existing JAVA project to Kotlin in small steps, class by class, method by method. Class members are public by default, and classes themselves are final by default, meaning that creating a derived class is disabled unless the base class is declared with the open keyword. By default, the Kotlin/JVM compiler produces Java 8 compatible bytecode. If you want to make use of optimizations available in newer versions of Java, you can explicitly specify the target Java version from 9 to 21.
For example, we can declare a regular variable type string as either capable of holding null values or not. As I said before, Kotlin was designed by JetBrains, the same people who designed Intellij. I think that is obvious that IntelliJ works really well with Kotlin. You can easily start a new project with your IntelliJ, you don’t have to install any extensions.
Like the java compiler, the Kotlin compiler also generates the byte code, which can run on JVM. Kotlin is object-oriented and supports functional programming features. Actually, to be honest, Kotlin is Java with some extra pieces of stuff. Those languages can be used in parallel in the same project. For example, you can easily use JAVA libraries in Kotlin’s project, but Kotlin gives you more out of the box. You can use it to a code Back-end server, Andriod Apps or even iOS app using Kotlin Native.
Kotlin can be added to earlier versions of Android Studio with a plug-in. One of the hottest new programming languages, Kotlin is being prioritised by some of the world’s leading companies. Since first hitting the scene in 2016, this open-source language has quickly built a reputation as one of the key pillars to the future of development.