How to Install Java on Ubuntu - cloudeguru/How-To-Install GitHub Wiki

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In this document we will see a step by step guide on how to install Java on Ubuntu OS

  1. Launch a ubuntu instance and login it to.

  2. Check if java is already installed by running below command java -version

  3. If java is not installed you will see something like Command 'java' not found, but can be installed with: sudo apt install openjdk-11-jre-headless # version 11.0.20.1+1-0ubuntu1~22.04, or sudo apt install default-jre # version 2:1.11-72build2 sudo apt install openjdk-17-jre-headless # version 17.0.8.1+1~us1-0ubuntu1~22.04 sudo apt install openjdk-18-jre-headless # version 18.0.2+9-2~22.04 sudo apt install openjdk-19-jre-headless # version 19.0.2+7-0ubuntu3~22.04 sudo apt install openjdk-8-jre-headless # version 8u382-ga-1~22.04.1

  4. Update repository by running sudo apt-get update

  5. Then run below command and if prompted press Y

    sudo apt-get install openjdk-17-jre

  6. Now verify if java has been installed by running below command

    java -version

  7. Now you should see something like below if java has been properly installed.

openjdk version "17.0.10" 2024-01-16 OpenJDK Runtime Environment (build 17.0.10+7-Ubuntu-122.04.1) OpenJDK 64-Bit Server VM (build 17.0.10+7-Ubuntu-122.04.1, mixed mode, sharing)

  1. To uninstall java from ubuntu use below command and if prompted press Y

sudo apt-get purge openjdk-\*