A way to specify JDK while installing JRuby

[progressive-galib]

I had JRuby installed manually with OpenJDK 21. I then uninstalled JRuby so that I could install it using RVM. However, RVM is not using my pre-installed JRE. Instead, it is trying to install openjdk-6-jre-headless, which is missing from the Ubuntu PPA. Additionally, openjdk-6-jre is not compatible with the Java libraries I need to work with.

I would like to be able to install JRuby using RVM with my own JRE.

ps: gist of logs https://gist.github.com/progressive-galib/ef44f6ccf142e660c98abb62e9ec6284

[progressive-galib]

i dont know if it is the proper way but fixed by finding out where java is then using update-alternatives to create a alt for java

(base) galib@galib:/mnt/c/Users/mahfu$ whereis java
java: /usr/share/java /home/galib/.sdkman/candidates/java/23.1.r21-nik/bin/java
(base) galib@galib:/mnt/c/Users/mahfu$ which java
/home/galib/.sdkman/candidates/java/current/bin/java
(base) galib@galib:/mnt/c/Users/mahfu$ sudo update-alternatives --install /usr/bin/java java /home/galib/.sdkman/candidates/java/current/bin/java 2
[sudo] password for galib:
update-alternatives: using /home/galib/.sdkman/candidates/java/current/bin/java to provide /usr/bin/java (java) in auto mode
(base) galib@galib:/mnt/c/Users/mahfu$ rvm install jruby