MCMT stands for Minecraft Classic Modding Toolset.
Please refer to wiki for instructions.
This program produces decompiled code. So you need to comply with Minecraft EULA.
You are not allowed to share the decompiled code
This program is not affiliated with Mojang Studios, Mojang AB or Microsoft Studios.
This program is not an official creation from Mojang or Microsoft.
You will need to recompile Fernflower. Please use this exact commit because it's the latest version of Fernflower that supports Java 8. You will need the DiffUtils library.
DiffUtils and Fernflower are licensed under the Apache License 2.0.