JavaBE - .jar Into .mcaddon

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Overview

JavaBE is a free Windows desktop tool that helps convert Java Edition mod content into Bedrock add-on format. It is built to reduce manual setup work and automate the hardest parts of conversion, so creators can test faster and spend less time fixing pack structure issues by hand.

What JavaBE Does

JavaBE processes user-supplied mod files and automatically builds Bedrock-ready output, including:

Entity/model conversion and geometry cleanup
Animation conversion and controller generation
Texture/sound/particle/language conversion (when supported)
Behavior + resource pack structure generation
Manifest/UUID/dependency setup
Validation + auto-fixes for common Bedrock load errors
Script bridge fallback for Java logic that cannot be mapped 1:1

Important Reality (Current State)

JavaBE is actively in development, and not every Java mod can be fully ported yet.

Some mods convert very well. Others may convert partially, need manual cleanup, or fail due to engine differences between Java and Bedrock (custom rendering, deep Forge/Fabric hooks, advanced networking logic, etc.). We are continuously improving compatibility and adding support over time.

Responsible Use / Creator Rights

JavaBE does not include or grant rights to third-party mod content. Users are responsible for following original creator licenses and permissions.

Do not sell/paywall converted output unless original rights explicitly allow it
Do not redistribute converted content unless the original creator/license permits it

Platform

Windows desktop only

Legal Notice

JavaBE is an independent third-party tool and is not affiliated with Mojang Studios or Microsoft Corporation.

Minecraft is a trademark of Microsoft Corporation.

Screenshots

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JavaBE 10.1 — Notes

Paid $2.50 one-time purchase
Includes an in-app guide available in the Install section; the guide can be read before purchase
Users will be sent a key for verification; misuse of JavaBE or a creator's content may result in suspension
The guide explains which mods can and cannot be converted and details limitations
JavaBE is not finished — updates will be received and manual finishing of some ports may still be required
Improved conversion support: more structure porting, more function porting, more script porting
Improved mob conversion: more animation porting, more model porting, expanded bone collection
Compatibility notes: works with variants, class files, and some UI elements
Take note: not all .jar mods will fully port over; results depend on mod complexity