Prerequisites

Before You Start

Get your environment ready in 2 minutes. Just Java 21+ and Git.

Install Java 21

Install Java 21 (Temurin)

# Install Homebrew (if not installed)
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

# Install Java 21 (Temurin/Adoptium)
brew install --cask temurin@21

Install Git

# Git comes with Xcode Command Line Tools
xcode-select --install

# Or install via Homebrew
brew install git

Verify Installation

Verify versions

java -version
git --version

You should see Java version 21 or higher and Git version 2.x or higher.

Ready to build?

Once Java and Git are installed, you're ready to start building with qqq.

Start the 90-Second Quickstart

Prefer manual installation?

Eclipse Temurin 21

adoptium.net

Git

git-scm.com