Build Your First Minecraft Mod in 1.21.10
Install Java and Required Tools
Download and install the latest Java Development Kit version 17 from the official Oracle website. Set the JAVA_HOME environment variable to point to your installation directory on your computer system. Verify the installation by opening a terminal and running java -version to confirm the correct version appears. This setup ensures your build tools can compile and run your mod code without errors later. You see the version number print clearly in your terminal window output.
1
Install Java and Required Tools
2
Set Up Your Modding Workspace
3
Configure Your Mod ID and Metadata
4
Create Your First Item Class
5
Add Item Models and Textures
6
Register the Item in the Registry
7
Run the Game in Development Mode
8
Test Your Item In-Game
9
Troubleshoot Common Errors