MarsSeed [1] filed a deletion request for jre15 [2]: Cleanup of JDK/JRE 15 non-LTS, short-term support packages.
Oracle JDK 15 is EOL since March 2021; extended/paid support for updates/fixes not available. Users should migrate to a newer JDK/JRE. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/jre15/
