How to install openjdk-8-jdk on Debian 10 (Buster)?

Question

It seems Debian does not support openjdk-8-jdk anymore due to a security issue. What is the easiest way to install openjdk-8-jdk for Debian 10 (Buster)?

Answer 1

This is my script which I use to install OpenJDK 8 on Bitbucket's Pipelines Docker image NodeJS 10.16.2. But now I see that this docker image is based on Stretch...

It is based on https://github.com/docker-library/openjdk/blob/89851f0abc3a83cfad5248102f379d6a0bd3951a/8-jdk/Dockerfile

#!/bin/bash
set -x #echo on
# based on https://github.com/docker-library/openjdk/blob/89851f0abc3a83cfad5248102f379d6a0bd3951a/8-jdk/Dockerfile

apt-get update && apt-get install -y --no-install-recommends \
  bzip2 \
  unzip \
  xz-utils &&
  rm -rf /var/lib/apt/lists/*

echo 'deb http://httpredir.debian.org/debian-security stretch/updates main' >/etc/apt/sources.list.d/jessie-backports.list

# Default to UTF-8 file.encoding
export LANG=C.UTF-8

# add a simple script that can auto-detect the appropriate JAVA_HOME value
# based on whether the JDK or only the JRE is installed
{ \
    echo '#!/bin/sh'; \
    echo 'set -e'; \
    echo; \
    echo 'dirname "$(dirname "$(readlink -f "$(which javac || which java)")")"'; \
} > /usr/local/bin/docker-java-home \
&& chmod +x /usr/local/bin/docker-java-home

export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
export JAVA_VERSION=8u252
export JAVA_DEBIAN_VERSION=8u252-b09-1~deb9u1

# see https://bugs.debian.org/775775
# and https://github.com/docker-library/java/issues/19#issuecomment-70546872
export CA_CERTIFICATES_JAVA_VERSION=20170929~deb9u3

set -x \
    && apt-get update \
    && apt-get install -y \
        openjdk-8-jdk="$JAVA_DEBIAN_VERSION" \
        ca-certificates-java="$CA_CERTIFICATES_JAVA_VERSION" \
    && rm -rf /var/lib/apt/lists/* \
    && [ "$JAVA_HOME" = "$(docker-java-home)" ]

# see CA_CERTIFICATES_JAVA_VERSION notes above
/var/lib/dpkg/info/ca-certificates-java.postinst configure

UPDATE

Things change, versions are upped. Here is the latest script which works for https://hub.docker.com/layers/node/library/node/10.16.2/images/sha256-8f420c033acee137f9e902092a04d371bdf1f839559cce60614c0d5905d20294?context=explore

#!/bin/bash
set -x #echo on
# based on https://github.com/docker-library/openjdk/blob/89851f0abc3a83cfad5248102f379d6a0bd3951a/8-jdk/Dockerfile

apt-get update && apt-get install -y --no-install-recommends \
  bzip2 \
  unzip \
  xz-utils &&
  rm -rf /var/lib/apt/lists/*

echo 'deb http://httpredir.debian.org/debian-security stretch/updates main' >/etc/apt/sources.list.d/jessie-backports.list

# Default to UTF-8 file.encoding
export LANG=C.UTF-8

# add a simple script that can auto-detect the appropriate JAVA_HOME value
# based on whether the JDK or only the JRE is installed
{ \
    echo '#!/bin/sh'; \
    echo 'set -e'; \
    echo; \
    echo 'dirname "$(dirname "$(readlink -f "$(which javac || which java)")")"'; \
} > /usr/local/bin/docker-java-home \
&& chmod +x /usr/local/bin/docker-java-home

export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
export JAVA_VERSION=8u265
export JAVA_DEBIAN_VERSION=8u265-b01-0+deb9u1

# see https://bugs.debian.org/775775
# and https://github.com/docker-library/java/issues/19#issuecomment-70546872
export CA_CERTIFICATES_JAVA_VERSION=20170929~deb9u3

set -x \
    && apt-get update \
    && apt-get install -y \
        openjdk-8-jdk="$JAVA_DEBIAN_VERSION" \
        ca-certificates-java="$CA_CERTIFICATES_JAVA_VERSION" \
    && rm -rf /var/lib/apt/lists/* \
    && [ "$JAVA_HOME" = "$(docker-java-home)" ]

# see CA_CERTIFICATES_JAVA_VERSION notes above
/var/lib/dpkg/info/ca-certificates-java.postinst configure

Answer 2

the easiest way I have found to download java 8 on debian buster is to use the command su apt-get install openjdk-8-jdk

Answer 3

I needed to install a 32-bit version but this wasn't available at adoptopenjdk far as I could see. I tracked down a copy of a binary at java.com i their downloads area:

jre-8u241-linux-i586.tar.gz

All I needed was the JRE (rather than a JDK, but the process should be the same for either) and since it was also for a personal use only, the Oracle binary was OK (they have limitations in this regard).

I downloaded the binary and placed it in the home folder (~/) of the user that needed to run it and then unzipped it like so:

mkdir ~/java && cd ~/java && tar -xf jre-8u241-linux-i586.tar.gz

Then added the location to the path of the user that would run the Java application by appending this line to ~/.profile:

export PATH=$PATH:/home/youruserid/java/jre1.8.0_241/bin

This worked fine for my case but there are no doubt better ways to install a binary. For example so it is available for all Unix users rather than just one.