Java Set-up

Warning

This is a draft.

How to set up Java in macOS with multiple Java versions

Created: 11.10.2023 Last Updated: 11.10.2023

Installation

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

Install Java Versions

Install necesarry versions

brew install openjdk@17

Create symlink (this command is also given by HomeBrew)

sudo ln -sfn /opt/homebrew/opt/openjdk@17/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk-17.jdk

Update bash/zsh Profile

My default java version is 21 but with j17 command it switches to Java version 17.

# JAVA
export PATH="/opt/homebrew/opt/openjdk@21/bin:$PATH"
alias j17='export PATH="/opt/homebrew/opt/openjdk@17/bin:$PATH" ; java --version'
alias j21='export PATH="/opt/homebrew/opt/openjdk@21/bin:$PATH" ; java --version'