MapTool currently requires Java Development Kit (JDK) 21 from Eclipse Temurin (formerly AdoptOpenJDK) distribution.
For detailed instructions on setting up your development environment, including installing the appropriate JDK, please see the Contributor Setup page.
The setup includes:
- Installing JDK 21
- Setting up your IDE (IntelliJ IDEA recommended)
- Configuring the development environment
- Building and running MapTool