Ubuntu 26.04 OpenJDK 21 Install / Uninstall

1. Install

 

2. Uninstall

 

 

OpenJDK 21 Install

 

$ sudo apt install openjdk-21-jdk

 

[ Execution log ]

gangserver@TCM73-U0424:~$ sudo apt install openjdk-21-jdk
Installing:                     
  openjdk-21-jdk

Installing dependencies:
  libice-dev  libxau-dev    libxt-dev                x11proto-dev
  libsm-dev   libxcb1-dev   openjdk-21-jdk-headless  xorg-sgml-doctools
  libx11-dev  libxdmcp-dev  uuid-dev                 xtrans-dev

Suggested packages:
  libice-doc  libx11-doc  libxt-doc        openjdk-21-source
  libsm-doc   libxcb-doc  openjdk-21-demo  visualvm

Summary:
  Upgrading: 0, Installing: 13, Removing: 0, Not Upgrading: 0
  Download size: 86.8 MB
  Space needed: 106 MB / 22.9 GB available

Continue? [Y/n] y
(... Log omitted ...)

 

 

OpenJDK 21 Uninstall

 

$ sudo apt remove openjdk-21-jdk

$ sudo apt autoremove -y

 

[ Execution log ]

gangserver@TCM73-U0424:~$ sudo apt remove openjdk-21-jdk
The following packages were automatically installed and are no longer required:
  libice-dev  libxau-dev    libxt-dev                x11proto-dev
  libsm-dev   libxcb1-dev   openjdk-21-jdk-headless  xorg-sgml-doctools
  libx11-dev  libxdmcp-dev  uuid-dev                 xtrans-dev
Use 'sudo apt autoremove' to remove them.

REMOVING:
  openjdk-21-jdk

Summary:
  Upgrading: 0, Installing: 0, Removing: 1, Not Upgrading: 0
  Freed space: 1,723 kB

Continue? [Y/n] y
(Reading database… 172584 files and directories currently installed.)
Removing openjdk-21-jdk:amd64 (21.0.11~8ea-1)…

 

gangserver@TCM73-U0424:~$ sudo apt autoremove -y
REMOVING:                       
  libice-dev  libxau-dev    libxt-dev                x11proto-dev
  libsm-dev   libxcb1-dev   openjdk-21-jdk-headless  xorg-sgml-doctools
  libx11-dev  libxdmcp-dev  uuid-dev                 xtrans-dev

Summary:
  Upgrading: 0, Installing: 0, Removing: 12, Not Upgrading: 0
  Freed space: 104 MB

(Reading database… 172568 files and directories currently installed.)

(... Log omitted ...)