Configuring Java JDK in your Ubuntu

README.md

Requeriments

• Download JDK

Guide

Note

Change the jdk.gz filename or folder name, based in your verion JDK downloaded as example I use the jdk-20.0.1

Preparing Artefacts

1. Access the official JDK website and Download a version available or compatible with your project
2. Extract with tar -xvf jdk-20.0.1.tar.gz
3. Move extracted foldersudo mv jdk-20.0.1 /opt/

Configuring global binaries

1. Create symbolic link appointing to jdk binaries

sudo ln -s /opt/jdk-20/bin/java /usr/bin/java
sudo ln -s /opt/jdk-20/bin/javac /usr/bin/javac

2. Or configure manually the env variable JAVA_HOME in $HOME/.config/config.fish

set -x JAVA_HOME /opt/jdk-20.0.1
set -x PATH $JAVA_HOME/bin $PATH

Important

If your default shell is zsh or bash, is need change the syntax and edit the respectives files .zshrc or .bashrc

3. Reload shell source $HOME/.config/config.fish

# zsh
source $HOME/.zshrc

# bash
source $HOME/.bashrc

4. Test java -version

Output:

openjdk version "20.0.1" 2023-04-18
OpenJDK Runtime Environment (build 20.0.1+9-29)
OpenJDK 64-Bit Server VM (build 20.0.1+9-29, mixed mode, sharing)