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Mapping of Data Objects in Kotlin 1. Intro When working with a legacy code base, using an external library or integrating against a framework, we regularly have use cases where we want to map between different objects or data structures. In this tutorial, we will look at how to easily… Continue Reading kotlin-data-objects
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Creating Java static final Equivalents in Kotlin 1. Overview In this quick tutorial, we’ll discuss static final variables in Java and their equivalent in Kotlin. In Java, declaring static final variables helps us create constants. And in Kotlin, we have several ways to achieve the same goal. 2. Inside an object Firstly,… Continue Reading kotlin-java-static-final
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Converting a Kotlin File to Java 1. Overview Kotlin is well-known for its interoperability with Java. This is, of course, possible because they both are running on the Java Virtual Machine – in other words, they are compiled to the same bytecode. In this tutorial, we’ll explore two ways… Continue Reading kotlin-convert-to-java
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Kotlin with Ktor 1. Overview Ktor is a framework for building asynchronous servers and clients in connected systems using the powerful Kotlin programming language. It facilitates developing a standalone application with embedded servers. In this tutorial, we’re going to explore how to create a standalone server application using Ktor. 2.… Continue Reading kotlin-ktor
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Non-blocking Spring Boot with Kotlin Coroutines 1. Overview Kotlin Coroutines can often add readability to reactive, callback-heavy code. In this tutorial, we’ll find out how to leverage these coroutines for building non-blocking Spring Boot applications. We’ll also compare the reactive and coroutine approaches. 2. Coroutine Motivation Nowadays, it is common for… Continue Reading spring-boot-kotlin-coroutines
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Introduction to Kovenant Library for Kotlin 1. Introduction Promises are a fantastic way to manage asynchronous code, like where we need a response but are willing to wait for it to be available. In this tutorial, we’re going to see how Kovenant introduces promises to Kotlin. 2. What are Promises?… Continue Reading kotlin-kovenant
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REST API With Kotlin and Kovert 1. Introduction Kovert is a REST API framework that is strongly opinionated, and thus very easy to get started with. It leverages the power of Vert.x but makes it significantly easier to develop applications consistently. It’s possible for us to write a Kovert API… Continue Reading kotlin-kovert
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Writing Specifications with Kotlin and Spek 1. Introduction Specification Testing frameworks are complementary to Unit Testing frameworks for testing our applications. In this tutorial, we’ll introduce the Spek framework – a Specification Testing framework for Java and Kotlin. 2. What is Specification Testing? Simply put, in Specification Testing, we start… Continue Reading kotlin-spek
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Kotlin Dependency Injection with Kodein 1. Overview In this article, we’ll introduce Kodein — a pure Kotlin dependency injection (DI) framework — and compare it with other popular DI frameworks. 2. Dependency First, let’s add the Kodein dependency to our pom.xml: <dependency> <groupId>com.github.salomonbrys.kodein</groupId> <artifactId>kodein</artifactId> <version>4.1.0</version> </dependency> Please note that the… Continue Reading kotlin-kodein-dependency-injection
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Generate a Random Alphanumeric String in Kotlin 1. Overview In this tutorial, we’ll discuss how to generate a random alphanumeric String in Kotlin using three different approaches: Java Random, Kotlin Random, and Apache Commons Lang RandomStringUtils. Then, we’ll wrap up with a look at a high-performance approach. 2. Dependencies Before… Continue Reading kotlin-random-alphanumeric-string
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