Creating Mods for Minecraft in Java

Part 1: Installing what you need

This guide explains how to set up a development environment to allow you create mods for Minecraft in Java. The instructions are explicitly designed for Windows. If you need instructions for MacOS or Linux please ask and we'll update the page.

Below is a step-by-step explanation of what you have to do.

This should all be set up at this stage. Launch Eclipse from your shortcut, and it will show the Client and Server projects. If you expand these you will see the src folder which contains the Java packages, each of which contains a number of files which are the decompiled sources for Minecraft.

You are now ready to start creating your first mod.