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
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    I would recommend searching for documentation regarding the Temurin JDK or visit their forums/sites. Is there a read.me file or other installation instructions? –  Nov 14 '21 at 01:21
  • @TBr well there is and it just says do export PATH=$PWD/jdk8u312-b07/bin:$PATH and doesnt say anything about update-alternatives option which i like to use – poqdavid Nov 14 '21 at 09:52
  • The best answer I can give you is this then; unless there is another user who has also installed this software and has chosen to use it as you have, only they would be able to provide a satisfactory answer. –  Nov 14 '21 at 14:35

2 Answers2

34

You can use the Adoptium Temurin Debian / Ubuntu repository

  1. Add the Eclipse Adoptium GPG key

    sudo apt install -y wget apt-transport-https gpg
wget -qO - https://packages.adoptium.net/artifactory/api/gpg/key/public | gpg --dearmor | tee /etc/apt/trusted.gpg.d/adoptium.gpg > /dev/null

  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" | 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
sudo apt install temurin-24-jdk

  4. Configure the default version

    sudo update-alternatives --config java
Byte Commander
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BuZZ-dEE
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  • This answer has minor flaws. The correct apt repository setup that worked in 03/2024 with Ubuntu 22.02 LTS is: https://askubuntu.com/a/1488200/18928 – user272735 Mar 07 '24 at 13:32
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    Note: the answer has been updated with recent changes related to apt key signatures. – Byte Commander Sep 22 '25 at 10:03
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
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