Kotlin for Web Development: Benefits and Features

Doodle applications use the browser’s graphics capabilities to draw user interfaces instead of relying on DOM, CSS, or Javascript. By using this approach, Doodle gives you precise control over the rendering of arbitrary UI elements, vector shapes, gradients, and custom visualizations. https://www.globalcloudteam.com/ The Kotlin/JS IR compiler comes with a number of improvements over the old default compiler. For example, it reduces the size of generated executables via dead code elimination and provides smoother interoperability with the JavaScript ecosystem and its tooling.

Javalin is considered one of the most lightweight frameworks for web development with Kotlin. It supports HTTP2, Lambda-based Web Socket API and async requests. The framework is known for being easy to learn, especially for developers who are just starting with backend development. A greater proportion of Kotlin developers are using libraries and frameworks in 2021 than before.The popularity of the top Kotlin libraries created by JetBrains is increasing. Coroutines, the most popular library, has increased its share by 10 percentage points since last year.Serialization and Test have raised their presence by 9 and 6 percentage points respectively.

Start using Kotlin today!

An important milestone of our educational initiatives is the release of a freely available semester-long Programming in Kotlin curriculum. The Programming in Kotlin course includes slides for 11 lectures covering core Kotlin programming language concepts complete with speaker notes. The course comes with assessment resources, such as quizzes, three tests, and four homework assignments with hands-on coding exercises. You can use the curriculum as-is or adjust it to fit your educational needs. Kotlin is a modern, trending programming language that was released in by JetBrains.

kotlin for web development

The recommended way to use Kotlin/JS is via the kotlin.multiplatform Gradle plugin. It lets you easily set up and control Kotlin projects targeting JavaScript in one place. This includes essential functionality such as controlling the bundling of your application, adding JavaScript dependencies directly from npm, and more. To get an overview of the available options, check out Set up a Kotlin/JS project.

What languages did you use before you switched to Kotlin?

In order to start using Kotlin in your project, make sure that the Kotlin plugin is enabled and the Kotlin dependency is added to your project. Ktor allows you to use only what you need, and to structure your application the way you need it. In addition you can also extend Ktor with your own plugin very easily. Kotlin’s interoperability makes it compatible with existing JVM libraries, Android and browsers. To generate your own metadata in order to get these custom properties recognized by your IDE, kapt should be configured with the spring-boot-configuration-processor dependency as following. Kotlin has great support and many contributors in its fast-growing global community.

  • JetBrains Account, the system responsible for the entire license sales and validation process at JetBrains, is written in 100% Kotlin and has been running in production since 2015 with no major issues.
  • These include Android Studio, which is the most popular tool for Android development; IntelliJ IDEA created by JetBrains itself; Atom developed by GitHub; Eclipse and others.
  • Jackson and gson are the most popular Java libraries for working with JSON.
  • To gain more detailed information, you can visit the official Kotlin web site and Spring blog.
  • There are also a number of frameworks that are implemented in Kotlin.
  • Sometimes it may be required to implement a simple interface, but usually, it is a matter of writing a transforming or intercepting function.

It’s a suite of tools that have no dependencies on other libraries providing capabilities such as loading cache, configurations, tracking tools, and more. Spring Boot makes it easy to create Spring-powered, production-grade applications and services with absolute minimum fuss. Spark Framework is a simple and expressive Java/Kotlin web framework DSL built for rapid development. Javalin’s main goals are simplicity, a great developer experience, and first-class interoperability between Kotlin and Java. Sometimes it may be required to implement a simple interface, but usually, it is a matter of writing a transforming or intercepting function.

Writing JUnit 5 tests in Kotlin

You will be able to add the necessary frameworks and technologies later at any time. You get to use a concise, multiplatform language, as well as the power of asynchronous programming with an intuitive imperative flow. In this test example, we have created one test user and two mock articles and then we stated that for every repository request to find all articles, we return a list of mocked articles. After preparations for the test, we can compose a mock HTTP request using MockMVC. We are telling MockMVC to perform a GET request on ‘/api/article’ and to expect content in the JSON format.

Now, let me explain to you the terms in the above-written program. Following steps helps you to create and run a new Kotlin project in IntelliJ. You don’t have to install any plug-in separately to run the Kotlin programs. This tutorial supplements all explanations with clarifying examples. Kotlin is easy to learn, especially if you already know Java (it is % compatible with Java).


To learn how to accomplish the same using other build tools, use the Build tool switcher at the top of the page. Vaadin-on-Kotlin is a web-application framework that includes everything needed to create database-backed web applications. When Kweb receives an HTTP https://www.globalcloudteam.com/how-to-hire-a-kotlin-developer-tips-and-tricks/ request it responds with a small HTML file including optimized instructions for building the page, and a client that connects back to the web server via a WebSocket. Ktor is a framework for quickly creating web applications in Kotlin with minimal effort.

The most popular and feature-rich framework in the ecosystem is Spring. Approximately half of all projects in the JVM ecosystem now use Spring as the framework of choice. The previous blog post about Kotlin for server-side development includes stories from Atlassian and Expedia who use Spring Boot for their projects. Kotlin is a full-stack solution that can be used for back-end and front-end development instead of Java and JavaScript. It can be used to develop apps for a server, web browser, or mobile. Compared to Java, Kotlin is more understandable and requires fewer lines of code.

Trending Courses in Mobile Development

It is quite common to use existing frameworks and libraries for backend application development. If we look at most of the popular frameworks in the Java ecosystem, many of them actually support Kotlin out of the box. You can use these frameworks and libraries in your Kotlin programs thanks to Kotlin’s flawless Java interoperability. If you need an app for your business, consider trusting its creation to a specialized development company that can handle the entire development process including organizational matters.

kotlin for web development

Instead of using util classes with abstract methods like in Java, it is usual in Kotlin to provide such functionalities via Kotlin extensions. Here we are going to add a format() function to the existing LocalDateTime type in order to generate text with the English date format. This tutorial shows you how to build efficiently a sample blog application by combining the power of Spring Boot and Kotlin. This tour covers the fundamentals of the Kotlin programming language. Google Cloud Platform offers a series of tutorials for deploying Kotlin applications to GCP, both for Ktor and App Engine and Spring and App engine. In addition, there is an interactive code lab for deploying a Kotlin Spring application.

Kotlin Help

When the program has started, the Run tool window opens, where you can review the output and interact with the program. IntelliJ IDEA allows you to run applications right from the editor. You don’t need to worry about the technical aspect because IntelliJ IDEA automatically does all the necessary preparations behind the scenes. Javalin is a very lightweight web framework for Kotlin and Java which supports WebSockets, HTTP2 and async requests. Kotlin is concise, safe, pragmatic, and focused on interoperability with Java code.

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