13

I wanted to install Temurin JDK both 8 and 11, I installed them by these steps

wget https://github.com/adoptium/temurin8-binaries/releases/download/jdk8u312-b07/OpenJDK8U-jdk_x64_linux_hotspot_8u312b07.tar.gz
tar xzf OpenJDK8U-jdk_x64_linux_hotspot_8u312b07.tar.gz

sudo mv jdk8u312-b07/  /usr/lib/jvm/temurinjdk-8-hotspot-amd64


sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/temurinjdk-8-hotspot-amd64/bin/java" 1081
sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/temurinjdk-8-hotspot-amd64/bin/javac" 1081

But I am not sure if this is 100% right and how do I generate .jinfo file is that even needed?

poqdavid
  • 277

2 Answers2

33

You can use the Adoptium Debian / Ubuntu repository

  1. Add the Eclipse Adoptium GPG key

    wget -O - https://packages.adoptium.net/artifactory/api/gpg/key/public | sudo apt-key add -

  2. Add the Eclipse Adoptium apt repository

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

  3. Install the Temurin version you require

    sudo apt update # update if you haven't already
sudo apt install temurin-8-jdk
sudo apt install temurin-17-jdk
sudo apt install temurin-21-jdk

  4. Configure the default version

    sudo update-alternatives --config java
BuZZ-dEE
  • 14,533
1

I extracted script from original AdoptOpenJDK deb package and modified version I use like:

wget https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.1%2B12/OpenJDK17U-jdk_x64_linux_hotspot_17.0.1_12.tar.gz

mkdir -p /usr/lib/jvm


sudo tar -xvvf OpenJDK17U-jdk_x64_linux_hotspot_17.0.1_12.tar.gz -C /usr/lib/jvm/


sudo ./java-alternative install /usr/lib/jvm/jdk-17.0.1+12
sudo ./java-alternative set /usr/lib/jvm/jdk-17.0.1+12
…
sudo ./java-alternative remove /usr/lib/jvm/jdk-17.0.1+12

Source code of script:

#!/bin/sh

set -eu


priority=2222
#jdk_base_dir=/usr/lib/jvm/adoptopenjdk-11-hotspot-amd64
#jdk_base_dir=/usr/lib/jvm/jdk-17.0.1+12
jdk_base_dir="$2"


if [ ! -d "$jdk_base_dir" ]
then
    echo "Invalid java directory. Choose one of: ";
    ls -1d /usr/lib/jvm/*
    exit
fi


tools="jaotc jar jarsigner java javac javadoc javap jcmd jconsole jdb jdeprscan jdeps jfr jhsdb jimage jinfo jjs jlink jmap jmod jps jrunscript jshell jstack jstat jstatd keytool pack200 rmic rmid rmiregistry serialver unpack200 jexec jspawnhelper"


case "$1" in
install)
    for tool in $tools ; do
        for tool_path in "$jdk_base_dir/bin/$tool" "$jdk_base_dir/lib/$tool" ; do
            if [ ! -e "$tool_path" ]; then
                continue
            fi


        slave=""
        tool_man_path="$jdk_base_dir/man/man1/$tool.1"
        if [ -e "$tool_man_path" ]; then
            slave="--slave /usr/share/man/man1/$tool.1 $tool.1 $tool_man_path"
        fi

        update-alternatives \
            --install \
            "/usr/bin/$tool" \
            "$tool" \
            "$tool_path" \
            "$priority" \
            $slave
    done
done



;;
remove)
    for tool in $tools ; do
        for tool_path in "$jdk_base_dir/bin/$tool" "$jdk_base_dir/lib/$tool" ; do
            if [ ! -e "$tool_path" ]; then
                continue
            fi


        update-alternatives \
            --remove \
            "$tool" \
            "$tool_path"
    done
done



;;
set)
    for tool in $tools ; do
        for tool_path in "$jdk_base_dir/bin/$tool" "$jdk_base_dir/lib/$tool" ; do
            if [ ! -e "$tool_path" ]; then
                continue
            fi


        update-alternatives \
            --set \
            "$tool" \
            "$tool_path"
    done
done



;;
esac
Milan Majer
  • 111