If you for whatever reason decided to install app-debug-noruntime
or you want to update for whatever reason, here's how you do it.
- Go to the android-openjdk-build-multiarch repo on GitHub, pick the branch you want (e. g. buildjre8 or buildjre17-21.)
- Log into GitHub, else you won't be able to download the runtime.
- Click on the name of the action, then download the
pojav
version of the runtime (e. g.jre17-pojav
). Do not download jdk, your game might crash with it. - Extract the zip with your file manager. ZArchiver and MiXplorer are recommended.
- Open Pojav and go to Settings → Java Tweaks → Runtime Manager → Add new, then select the .tar.xz file you just extracted from the zip.