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SDKMAN!

Introduction

SDKMAN! is a software development toolkit manager, a version manager similar to nvm for Node.js environments, and rbenv for Ruby environments. This tool allows developers to manage parallel versions of different Software Development Kits on most Unix-based systems (such as Linux, macOS, and Cygwin). It supports multiple versions and types of SDKs, including Groovy, Scala, Gradle, Java, and of course, KOTLIN ♥️.

Installation

Installing SDKMAN! is relatively straightforward using a terminal. While SDKMAN! is not directly available via brew or other package managers, its own one-liner bash script will achieve the same purpose.

Note: No guarantees that below instructions are still up-to-date. Please refer to the official SDKMAN! website.

  1. Open your terminal and enter:

    curl -s "https://get.sdkman.io" | bash

  2. To ensure that the installation was successful, open a new terminal or enter the following command in the current terminal:

    source "$HOME/.sdkman/bin/sdkman-init.sh"

    Sdkman init will also be automatically sourced by me zshrc file.

  3. Then check SDKMAN! version by executing:

    sdk version

    If the installation went well, this should display the installed version of SDKMAN!.

Common Tasks

Note: No guarantees that below instructions are still up-to-date. Please refer to the official SDKMAN! website.

Using SDKMAN!, you can easily manage different versions of an SDK. Here are a few common operations:

Installing Java

To install Java, use the install or i command followed by the software you want to install. For example, to install Java 17:

sdk install java 17.0.7-jbr # jbr is the JetBrains Runtime

You can also view all versions available for install by entering:

sdk list java

This will display all the versions available to install as well as indicate the current and default versions in use.

Switching Between SDK Versions

To switch between available versions of an SDK, use the use command followed by the SDK and the version you want to switch to. For example, to use Java 11:

sdk use java 11.0.14.1-jbr # jbr is the JetBrains Runtime

To make a specific version the default version (which will be used in all new shells), you can use the default command. For example, to set Java 11 as the default:

sdk default java 11.0.14.1-jbr # jbr is the JetBrains Runtime

Getting Current SDK Version

If you need to see the current version you're using for a specific SDK, you can use the current command. Specifically for Java, use:

sdk current java

This will display the currently active Java version.