Installing Java runtimes manually

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.

1. Go to the android-openjdk-build-multiarch repo on GitHub, pick the branch you want (e. g. buildjre8 or buildjre17-21.)
2. Log into GitHub, else you won't be able to download the runtime.
3. 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.
4. Extract the zip with your file manager. ZArchiver (opens new window) and MiXplorer (opens new window) are recommended.
5. Open Pojav and go to Settings → Java Tweaks → Runtime Manager → Add new, then select the .tar.xz file you just extracted from the zip.