Converting a Java Edition mod ( ) to a Bedrock Edition addon (
) is not a simple file renaming process because the two versions of Minecraft are written in different programming languages (Java vs. C++) and use entirely different systems for entities, blocks, and items.
A true conversion requires "porting"—recreating the mod's features using Bedrock's JSON-based addon system. The Reality of "Conversion" Java mods ( contain compiled Java code and assets. Bedrock Addons ( are essentially renamed files containing manifest.json files, textures, and behavior/resource packs. Automated Tools
: There is no 100% automated converter that turns complex Java code into Bedrock behaviors. However, tools like the Stonebyte Toolkit
(formerly CodeNex) help automate parts of the workflow, such as file structuring and pack management. Manual Porting Workflow (Write-up)
If you are a developer looking to port a mod, here is the standard procedural approach: 1. Deconstruct the .jar File Convert the into a readable format to access its assets. : Change the file extension from and extract it. : Locate the folder (containing textures, models, and sounds) and the files (logic). 2. Adapt the Assets (Resource Pack)
Minecraft Bedrock has specific requirements for textures and models. : Java uses
for models, but Bedrock uses a slightly different JSON format. You may need tools like Blockbench to import Java models and export them as Bedrock Geometry
: Ensure texture sizes are powers of two (e.g., 16x16, 64x64). 3. Recreate Logic (Behavior Pack)
This is the hardest part. You cannot "convert" the Java code directly.
: You must manually recreate the mod's logic using Bedrock's Behavior Packs Components animation_controllers to mimic the original mod's behavior. Consult Microsoft Learn's Add-on Documentation for the latest Bedrock API standards. 4. Package as .mcaddon
Once your Resource and Behavior packs are ready, you must package them for easy installation. Resource Pack Behavior Pack folders into a single folder. Compress that folder into a Rename the extension to
Double-clicking this file will automatically import it into Minecraft Bedrock. Summary Table Java Mod ( Bedrock Addon ( JSON / JavaScript Compiled Code + Assets Manifests + Resources + Behaviors Code-driven Data-driven / API scripts guide on using Blockbench to convert specific Java models to Bedrock format?
Converting a .jar file (Java Edition mod) to an .mcaddon file (Bedrock Edition) is a complex process because the two versions of Minecraft use entirely different coding languages and engines. While there is no universal one-click tool to perfectly convert every mod, specialized tools and manual steps can help port specific assets. Status Report: Java to Bedrock Conversion
Complexity Level: High. Java mods use Java code, while Bedrock Add-ons primarily use JSON, Molang, and JavaScript. Feasibility:
Textures/Models: Highly feasible using automated converters.
Game Logic/Scripts: Difficult; often requires manual rewriting of code.
Primary Tool (Porting Automation): Stonebyte (formerly CodeNex) offers JavaBE, a Windows tool designed to bridge the gap by converting .jar mod content into Bedrock-ready .mcaddon structures with automatic pack generation. Conversion Workflow
Converting a Java Edition Bedrock Edition ) is a complex process because the two versions of Minecraft use entirely different programming languages and engines. Java Edition
mods run on Java and interact with the game's bytecode, while Bedrock Edition
uses C++ and a system of JSON-based Behavior and Resource Packs.
There is no "one-click" converter that automatically rewrites Java code into Bedrock logic. Instead, the "conversion" is a manual process of porting assets and rewriting functionality. 1. Extracting Assets from the The first step is to treat the
as a compressed archive to access its visual and data assets. : You can change the file extension from or use an extraction tool to open it. What to look for : Inside the folder, you will find textures ( ), models (
), and sound files. These are the easiest components to port to a Bedrock 2. Rewriting Logic (The "Hard" Part)
Since Java code won't run on Bedrock, you must recreate the mod's features using Bedrock's native tools: Behavior Packs convert jar to mcaddon work
: Use JSON files to define entity behaviors, loot tables, and recipes. Resource Packs : Re-map the textures and models extracted from the to fit Bedrock’s folder structure. Scripting API : For complex logic that JSON can't handle, Bedrock uses a JavaScript-based Scripting API
. You would need to manually rewrite the original Java logic into JavaScript. 3. Packaging as
Once you have recreated the assets and behaviors in the Bedrock format, you must package them: manifest.json
file for both your Resource and Behavior packs to define the addon's UUID and version. Zip the folders together. Rename the extension to
. This allows the file to be automatically imported when opened on Windows, Android, or iOS. Helpful Tools for Porting Blockbench
: An essential 3D modeling tool that can import Java entity models and export them as Bedrock-compatible models.
: A powerful IDE specifically designed for creating Minecraft Bedrock addons with autocompletion for JSON components. Image Converters : While Bedrock supports
Converting a Minecraft mod from a Java .jar file to a Bedrock .mcaddon is a complex but increasingly accessible process. While "conversion" typically refers to recreating the mod's features in a new language (C++ for Bedrock vs. Java for Java Edition), new automation tools like JavaBE from developers like Stonebyte are bridging the gap.
Below is a comprehensive guide on how to convert components of a Java .jar mod into a working Bedrock .mcaddon. 1. Understanding the Core Difference
Java Mods (.jar): Written in Java, these modify the game's actual code using loaders like Forge or Fabric.
Bedrock Add-ons (.mcaddon): Use JSON files for data and JavaScript for logic, working within a structured API provided by Mojang.
The Conversion Reality: You cannot simply rename a .jar to .mcaddon. You must extract the assets (models, textures) and re-script the behavior. 2. Method 1: Converting Visual Assets (Easiest)
If your .jar mod adds new blocks or items, you can port the visual models using Blockbench. Step 1: Open Blockbench and select "Java Block/Item".
Step 2: Import the .json model files from the extracted .jar folder. Step 3: Use the Bedrock Model option to convert the format.
Step 4: Set all pivot points to zero and export the Bedrock geometry.
Step 5: Convert any textures using online tools like the Java to Bedrock Texture Converter. 3. Method 2: Automated Tooling (Recommended)
For full mod functionality, specialized bridge tools automate the folder structure and basic mapping.
JavaBE by Stonebyte: This tool is specifically designed to convert .jar mods into Bedrock-ready .mcaddon files. It automates: Automatic pack generation. File structure setup (Manifest.json, etc.). Basic optimization for Bedrock.
AI-Assisted Conversion: Platforms like DocsBot AI offer detailed system prompts to help developers map Java logic into Bedrock's script API. 4. Method 3: Converting Resource & Behavior Packs
If the "mod" is actually a resource pack or simple data pack within a .jar:
Converting a Minecraft Java mod ( ) to a Bedrock Edition Add-on ( not possible with a simple file conversion tool
. Because Java Edition and Bedrock Edition are built on completely different coding languages and engines, "converting" a mod actually requires recreating it from scratch for the target platform. Why Direct Conversion Doesn't Work
The primary barrier is the fundamental difference in how each game version is built and how it handles community content:
The cursor blinked rhythmically, a steady heartbeat against the dark backdrop of the coding IDE. Outside, the city of Neo-Veridia was quiet, but inside Elias’s cluttered apartment, the tension was thick enough to chew on. Converting a Java Edition mod ( ) to
"Come on," Elias whispered, tapping his mechanical keyboard with a nervous rhythm. "Just work."
On his primary monitor sat the prize: 'Aether_Legacy_v4.2.jar'. It was a legendary modification for the Java Edition of the game—files locked inside a compressed archive, written in a language the sleek, modern tablets and consoles of the Bedrock Edition couldn't understand.
Elias wasn't doing this for money. He was doing it for the community. The original developer, a shadowy figure known only as 'Prometheus', had vanished from the internet three years ago, leaving the mod in limbo. The console players were desperate, begging for a port. Elias, a reverse-engineer by trade and a modding enthusiast by passion, had taken up the mantle.
The process of converting a .jar to a .mcaddon wasn't a simple file conversion. It wasn't like turning a Word doc into a PDF. It was more like translating a Shakespearean sonnet into modern slang while hanging upside down. You had to unpack the .jar, rip out the Java bytecode, and rewrite the logic into Bedrock's behavior packs.
"Compile," Elias commanded, hitting F6.
A stream of red text cascaded down the output window.
Error: Entity 'FireSpider' missing behavior component. Model geometry mismatch at line 402.
"Damn it," Elias hissed, grabbing his coffee mug only to find it empty.
The issue was the geometry. Java mods used custom models defined in Java code, often obfuscated to prevent theft. Bedrock used a rigid JSON structure. Elias had to essentially sculpt the 3D models by hand, coordinate by coordinate, matching the visual style without access to the original source files.
He opened the error log. The FireSpider was supposed to shoot projectiles that exploded into webs. In Java, that was a single class extension. In Bedrock, he had to script a custom entity from scratch, define the projectile, and then write a behavior file to detect the collision.
Hours bled into the night. The glow of the monitors was his only sunlight. He was deep in the 'entity' folder, wrestling with a file named aether_fire_spider.json.
Creak.
Elias froze. The sound hadn't come from the code. It came from his hallway.
He slid his headphones down around his neck. Silence. He lived alone. He reached for the baseball bat he kept by his desk, his heart hammering a rhythm faster than his CPU clock.
He crept to the hallway door. Nothing. Just the hum of his refrigerator.
He let out a breath, laughing nervably at his own paranoia. He was tired. That was all. He turned back to his desk—
And stopped.
The cursor on his screen was moving.
He hadn't touched the mouse. On the screen, inside the JSON file he had left open, a new line of code was being typed, character by character.
"minecraft:behavior.ranged_attack":
"burst_shots": 3,
"entity_interval": 0.5
Elias stood frozen. He watched as the code corrected the error he had been stuck on for hours. The syntax was perfect—better than his own. The cursor stopped blinking. The code was finished.
"Hello?"
Directly converting a .jar (Java Edition) file to an .mcaddon (Bedrock Edition) file is not a simple "rename" process because the two versions of Minecraft use entirely different coding languages and internal engines.
However, you can bridge the gap using specialized tools or manual porting techniques. 1. Automation Tools (Fastest Method)
Dedicated toolkits have been developed to automate the complex task of re-structuring Java mods into Bedrock-ready packs. Elias stood frozen
JavaBE: This tool specifically bridges the gap by converting .jar mods into .mcaddon files. It handles automatic pack generation, structure setup, and optimization for Bedrock Edition.
AutoBE: Often used alongside JavaBE, this tool automates addon merging and pack management, which is useful if you are trying to combine multiple ported mods. 2. Manual Porting (Best for Models/Textures)
If you only need certain parts of a Java mod (like custom blocks or items) to work in Bedrock, you can port them using Blockbench.
Open Blockbench: Load the Java block or item model (.json) from inside the .jar file.
Adjust for Bedrock: Reset all pivot points to zero and apply a "Geometry Patch" to ensure the model displays correctly in Bedrock's engine. Export: Use the Bedrock Geometry exporter to save the file.
Finalize: Use an Addons Maker app or manual folder structuring to bundle the geometry and textures into an .mcaddon or .mcpack. 3. File Preparation Basics
Before using conversion tools, you may need to access the contents of the .jar.
Convert JAR to ZIP: Since a .jar is essentially a compressed archive, you can change the file extension to .zip to browse its internal assets (textures, models, and scripts).
Pack Structure: An .mcaddon is just a .zip file containing a Behavior Pack and a Resource Pack. For a converted mod to work, it must include a manifest.json file that tells Bedrock how to read the data. Summary of Differences Java Edition (.jar) Bedrock Edition (.mcaddon) Language C++, JSON, and Molang Structure Compiled class files Pack manifests and JSON definitions Installation Requires Forge or Fabric Native "Open With" import Are you trying to port a specific mod, or ZIP To MCADDON Tutorial for minecraft mods made easy!!
Converting a Java Edition mod (a .jar file) into a Bedrock Edition addon (an .mcaddon or .mcpack file) is a common goal for players wanting to bring their favorite features to mobile, console, or Windows 10/11 versions of Minecraft. However, because Java and Bedrock are built on entirely different coding languages—Java and C++, respectively—there is no simple "one-click" converter that can fully automate the process for complex mods.
This guide outlines the most effective workflows to port assets and mechanics so they actually work in Bedrock. 1. Understanding the "Conversion" Reality
It is important to manage expectations: you cannot simply rename a .jar file to .mcaddon and expect it to work.
Java Mods (.jar): These contain compiled Java code that interacts with the game’s engine, often requiring loaders like Forge or Fabric.
Bedrock Addons (.mcaddon): These are essentially ZIP archives containing JSON files for behaviors and PNG/TGA files for resources. 2. Converting Visual Assets (The Easiest Part)
If the .jar file is primarily a texture pack or contains custom 3D models, you can often port these successfully using specialized tools.
Online Converters: Tools like Itsme64’s Converter or ModifiedCommand’s GitHub tool can automate the renaming and restructuring of texture files.
3D Models with Blockbench: For custom entities, use Blockbench. You can import a Java .json model and export it as a Bedrock Geometry file. Open the Java model in Blockbench. Set all pivot points to zero (required for Bedrock). Export the file as Bedrock Geometry.
Use an app like Addons Maker (on mobile) to bundle the model and texture into a functional addon. 3. Porting Game Mechanics (The Hard Part)
Since Java code cannot run on Bedrock, mechanics must be manually recreated using Bedrock's Behavior Packs.
Create a folder with two subfolders:
behavior_pack/ – Contains manifest.json, entities/, blocks/, scripts/ (JavaScript/TS)resource_pack/ – Contains manifest.json, textures/, models/, sounds/Zip them together and rename .zip → .mcaddon. When double‑clicked, Minecraft Bedrock imports both packs at once.
| Feature | Java Edition | Bedrock Edition |
|---------|--------------|----------------|
| Mod format | .jar (Java archive) | .mcaddon (ZIP of behavior + resource packs) |
| Language | Java | C++ (with JSON & scripting) |
| APIs | Forge, Fabric, NeoForge | Official add‑on system, Gametest Framework |
| Assets | Java-style models, PNGs, sounds | Geckolib models, PNGs, sounds |
Why you can’t just convert:
A .jar contains compiled Java bytecode. Bedrock cannot execute Java. An .mcaddon is simply a renamed .zip containing two folders: a behavior pack (logic) and a resource pack (visuals). There is no automated converter for code logic.