ModsJava
Lib 39
A mod library for better creating mod. Free Minecraft Java mod for 1.20.1.
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.
A LIB
Current Library Features
- S2C Synchronized Data System (Not only supports Capability but also enables synchronization of more data types through DataProvider)
- I18n Language JSON Data Generation Code based on Provider (providing more convenient language data generation)
- Compatibility Code Registration Management Class (for easier compatibility with other mods)
- NBT Read/Write Utility Class using a chain pattern to reduce redundant serialization/deserialization logic
- A Series of Riding Methods for more convenient management of riding relationships
...and a range of other utility methods aimed at reducing repetitive coding tasks.
For Developers
Add the Maven repository in your build.gradle:
repositories {
maven {
name = "LTD Maven"
url = "" rel="noopener nofollow" target="_blank">https://nexus.bot.leisuretimedock.top/repository/maven-public/"
}
}
Import the dependency:
implementation 'top.r3944realms.lib39:lib39:${version}'
Version examples like 1.20.1-0.0.17:
implementation 'top.r3944realms.lib39:lib39:1.20.1-0.0.17'
After building, this mod can be found in the library with examples included.
Click "Download Source Code" in the right-hand window to view JavaDoc annotations.
Verified by MCModsHub
- Ships as lib39-forge-1.20.1-0.5.6.jar — drop this file into the mods folder
- Download size: 1.1 MB
- Download link checked 23 Aug 2026 — working
These come from our own check of the pack file, not from the source page.