Intro

SDKMAN! is a tool for managing parallel versions of multiple Software Development Kits on most Unix based systems. It allows you to download and easy switch between various versions of JDK.

Getting Started

Installing sdkman

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

Installing the latest stable java jdk

sdk install java

List all available java jdk

sdk list java

the output will be similar to this

================================================================================
Available Java Versions for Linux 64bit
================================================================================
 Vendor        | Use | Version      | Dist    | Status     | Identifier
--------------------------------------------------------------------------------
 Corretto      |     | 17.0.2.8.1   | amzn    |            | 17.0.2.8.1-amzn
               |     | 17.0.1.12.1  | amzn    |            | 17.0.1.12.1-amzn
               |     | 17.0.0.35.1  | amzn    |            | 17.0.0.35.1-amzn
               |     | 11.0.14.9.1  | amzn    |            | 11.0.14.9.1-amzn
               |     | 11.0.13.8.1  | amzn    |            | 11.0.13.8.1-amzn
               |     | 11.0.12.7.1  | amzn    |            | 11.0.12.7.1-amzn
               |     | 8.322.06.2   | amzn    |            | 8.322.06.2-amzn
               |     | 8.312.07.1   | amzn    |            | 8.312.07.1-amzn
 Dragonwell    |     | 11.0.12.8    | albba   |            | 11.0.12.8-albba
               |     | 8.8.9        | albba   |            | 8.8.9-albba
 GraalVM       |     | 21.3.0.r17   | grl     |            | 21.3.0.r17-grl
               |     | 21.3.0.r11   | grl     |            | 21.3.0.r11-grl
               |     | 21.2.0.r16   | grl     |            | 21.2.0.r16-grl
               |     | 21.2.0.r11   | grl     |            | 21.2.0.r11-grl
               |     | 21.2.0.r8    | grl     |            | 21.2.0.r8-grl
               |     | 21.1.0.r8    | grl     |            | 21.1.0.r8-grl
               |     | 20.3.4.r11   | grl     |            | 20.3.4.r11-grl
               |     | 20.3.3.r11   | grl     |            | 20.3.3.r11-grl
               |     | 20.3.3.r8    | grl     |            | 20.3.3.r8-grl
               |     | 20.3.2.r8    | grl     |            | 20.3.2.r8-grl
               |     | 19.3.6.r11   | grl     |            | 19.3.6.r11-grl
               |     | 19.3.6.r8    | grl     |            | 19.3.6.r8-grl
 Java.net      |     | 19.ea.5      | open    |            | 19.ea.5-open
               |     | 19.ea.1.lm   | open    |            | 19.ea.1.lm-open

Or, you can use TAB to get a list of versions:

$ sdk install java 
11.0.10-open       11.0.14-sapmchn    17.0.2.fx-zulu     21.1.0.r8-grl      8.0.292-open
11.0.11-open       11.0.14-zulu       17.0.2-librca      21.1-nik           8.0.302-open
11.0.12.7.1-amzn   11.0.2-open        17.0.2-open        21.2.0.2-mandrel   8.0.312.fx-librca
11.0.12.8-albba    11.0.9-trava       17.0.2-oracle      21.2.0.r11-grl     8.0.312.fx-zulu
11.0.12-open       17.0.0.35.1-amzn   17.0.2-sapmchn     21.2.0.r16-grl     8.0.312-librca
11.0.13.8.1-amzn   17.0.1.12.1-amzn   17.0.2-zulu        21.2.0.r8-grl      8.0.312-sem
11.0.13.fx-librca  17.0.1.fx-librca   17.ea.3.pma-open   21.2-nik           8.0.312-tem
11.0.13.fx-zulu    17.0.1.fx-zulu     18.ea.31-open      21.3.0.0-mandrel   8.0.312-zulu
11.0.13-librca     17.0.1-librca      19.3.6.r11-grl     21.3.0.r11-grl     8.0.322.fx-librca
11.0.13-ms         17.0.1-ms          19.3.6.r8-grl      21.3.0.r11-nik     8.0.322.fx-zulu
11.0.13-sapmchn    17.0.1-open        19.ea.1.lm-open    21.3.0.r17-grl     8.0.322-librca
11.0.13-sem        17.0.1-oracle      19.ea.5-open       21.3.0.r17-nik     8.0.322-zulu
11.0.13-tem        17.0.1-sapmchn     20.3.2.r8-grl      6.0.119-zulu       8.312.07.1-amzn
11.0.13-zulu       17.0.1-sem         20.3.3.0-mandrel   7.0.322-zulu       8.322.06.2-amzn
11.0.14.9.1-amzn   17.0.1-tem         20.3.3.r11-grl     7.0.332-zulu       8.8.9-albba
11.0.14.fx-librca  17.0.1-zulu        20.3.3.r8-grl      8.0.232-trava      
11.0.14.fx-zulu    17.0.2.8.1-amzn    20.3.4.r11-grl     8.0.265-open       
11.0.14-librca     17.0.2.fx-librca   21.0.0.2-nik       8.0.282-open       

Installing a specific java version

sdk install java 17.0.2-oracle

To alter among java versions, run the following command:

Using TAB at the end, you will have a list of available versions

$ sdk use java
11.0.12-open   17.0.1-tem     17.0.2-oracle  8.0.302-open
$ sdk use java 8.0.302-open

Using java version 8.0.302-open in this shell.

Changing the default

$ sdk default java 11.0.12-open

References

• https://stackoverflow.com/questions/69602928/what-should-i-set-java-home-to-using-multiple-jdks
• https://sdkman.io/usage