[Unstable] How to install openjdk-8-jdk on Debian Buster (Debian 10) armhf

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RaspberryPi Debian OpenJDK buster armhf Debian テキストリンク

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１．Introduction

[October 20, 2019] This procedure is deprecated at this time. Click here for the stable procedure. [Stable] Install openjdk-8-jdk safely in Raspbian Buster (Debian 10) environment

In Debian Buster (Debian 10), openjdk-8-jdk is excluded from the supported packages. The procedure for installing openjdk-8-jdk is described below. The same procedure works for other architectures such as aarch64 and x86_64 and other.

Click here for the procedure by Raspbian Buster.

２．Procedure

Edit_sources.list
$ sudo nano /etc/apt/sources.list

Add the following deb http://... to the bottom line.

Add_the_following_line
deb http://deb.debian.org/debian/ sid main

Quit Nano editor.
Ctrl+O
Ctrl+X

Install_openjdk-8-jdk
$ sudo apt-get update
$ sudo apt-get install -y openjdk-8-jdk
Java_version_switch
$ sudo update-alternatives --config java

There are 2 choices for the alternative java (providing /usr/bin/java).

  Selection    Path                                            Priority   Status
------------------------------------------------------------
* 0            /usr/lib/jvm/java-11-openjdk-armhf/bin/java      1111      auto mode
  1            /usr/lib/jvm/java-11-openjdk-armhf/bin/java      1111      manual mode
  2            /usr/lib/jvm/java-8-openjdk-armhf/jre/bin/java   1081      manual mode

Press <enter> to keep the current choice[*], or type selection number: 2
Javac_version_switch
$ sudo update-alternatives --config javac
There are 2 choices for the alternative javac (providing /usr/bin/javac).

  Selection    Path                                          Priority   Status
------------------------------------------------------------
* 0            /usr/lib/jvm/java-11-openjdk-armhf/bin/javac   1111      auto mode
  1            /usr/lib/jvm/java-11-openjdk-armhf/bin/javac   1111      manual mode
  2            /usr/lib/jvm/java-8-openjdk-armhf/bin/javac    1081      manual mode

Press <enter> to keep the current choice[*], or type selection number: 2
Java_version_check
$ java -version

openjdk version "1.8.0_222"
OpenJDK Runtime Environment (build 1.8.0_222-8u222-b10-1-b10)
OpenJDK Client VM (build 25.222-b10, mixed mode)

$ javac -version
javac 1.8.0_222
Edit_sources.list
$ sudo nano /etc/apt/sources.list

Delete the following deb http://... from the bottom line.

Delete_the_following_line
deb http://deb.debian.org/debian/ sid main

Quit Nano editor.
Ctrl+O
Ctrl+X

$ sudo apt-get update

３．Reference articles

https://novicestuffs.wordpress.com/2017/04/25/how-to-uninstall-java-from-linux/
https://stackoverflow.com/questions/57031649/how-to-install-openjdk-8-jdk-on-debian-10-buster