Install Java 8 or 11 on Debian 12

install-java-temurin-debian-12.txt

mkdir -p /etc/apt/keyrings

wget -O - https://packages.adoptium.net/artifactory/api/gpg/key/public | tee /etc/apt/keyrings/adoptium.asc

echo "deb [signed-by=/etc/apt/keyrings/adoptium.asc] https://packages.adoptium.net/artifactory/deb $(awk -F= '/^VERSION_CODENAME/{print$2}' /etc/os-release) main" | tee /etc/apt/sources.list.d/adoptium.list

apt update 

apt install temurin-8-jdk

update-alternatives --config java # choose new java
update-alternatives --config javac # choose new javac

Thanks!