Setting up a Kotlin application environment on Ubuntu involves a series of straightforward steps. Kotlin, a modern programming language that runs on the Java Virtual Machine (JVM), offers a blend of functional and object-oriented programming features. It is interoperable with Java and is known for its concise syntax. In this guide, we’ll cover the essentials of getting your Kotlin development environment ready on an Ubuntu system, including the installation of Java, Kotlin, and a suitable Integrated Development Environment (IDE).
Prerequisites
Before beginning, ensure you have a working Ubuntu system and administrative privileges (sudo access) to install packages.
Step 1: Update and Upgrade Ubuntu Packages
First, update your package index and upgrade the existing packages to their latest versions. Open a terminal and run:
sudo apt update && sudo apt upgrade -y
Step 2: Install Java
Kotlin applications run on the JVM, so you need Java installed on your system. You can install the default Java Development Kit (JDK) with the following command:
sudo apt install default-jdk -y
After installation, verify it by checking the Java version:
java -version
You should see the installed Java version details.
Step 3: Install Kotlin
While there are multiple ways to install Kotlin, using the Software Development Kit Manager (SDKMAN!) is one of the easiest and most flexible methods. SDKMAN! allows you to manage multiple software development kits for Java, Kotlin, Groovy, and other JVM languages. Install SDKMAN! by running:
curl -s "https://get.sdkman.io" | bash
Follow the on-screen instructions to complete the installation. After installing SDKMAN!, open a new terminal or run:
source "$HOME/.sdkman/bin/sdkman-init.sh"
Install Kotlin using SDKMAN!:
sdk install kotlin
Verify the Kotlin installation by checking its version:
kotlin -version
Step 4: Install IntelliJ IDEA
IntelliJ IDEA is a popular IDE for Kotlin development. Although you can use other IDEs like Eclipse or Visual Studio Code, IntelliJ offers excellent Kotlin support out of the box. Install IntelliJ IDEA Community Edition via the snap package manager:
sudo snap install intellij-idea-community --classic
Alternatively, you can download it from the JetBrains website and install it manually.
Step 5: Create Your First Kotlin Application
To ensure everything is set up correctly, let’s create a simple Kotlin “Hello, World!” application. Open IntelliJ IDEA and create a new Kotlin project. Once the project is set up, create a new Kotlin file named Main.kt and paste the following code:
fun main() {
println("Hello, World!")
}
Run the application by clicking the run button next to the main function. You should see “Hello, World!” printed in the console.
Step 6: Explore Kotlin Development
With your environment set up, you’re ready to dive deeper into Kotlin development. Explore Kotlin’s documentation, join the Kotlin community, and start building your projects.
Conclusion
Configuring a Kotlin application environment on Ubuntu is a straightforward process. By following the steps outlined in this guide, you can set up a robust development environment that lets you explore the full potential of Kotlin on Ubuntu. Whether you’re new to Kotlin or an experienced developer, the simplicity and power of Kotlin, combined with the flexibility of Ubuntu, make for a compelling development ecosystem.
