Double-click the .mcaddon file. Minecraft Bedrock Edition will automatically launch and import both packs into your game. Limitations to Keep in Mind
Inside, look for the assets folder (textures/models) and the data folder (recipes/loot tables). Step 2: Convert the Textures and Models
Repeat this process for the folder, changing the module type to "data" .
Create a text file named manifest.json inside MyAddon_RP and paste this code: how to convert jar to mcaddon
Built using Java . It uses compiled bytecode ( .jar files) and relies heavily on community-driven modding APIs like Forge, Fabric, or NeoForge to inject code into the game.
If your mod includes custom mobs, complex logic, or scripting, automated tools will fail. You must build the .mcaddon manually using the Java mod as a blueprint. Step 1: Decompile and Decompress the JAR Change the extension of your mod from .jar to .zip . Extract the ZIP file into a dedicated project folder.
PortKit is one of the most ambitious projects to date. It uses a multi‑agent AI system (CrewAI + LangChain) to analyse a Java mod’s .jar file and generate a matching Bedrock add‑on. The current MVP focuses on – taking a single block from a .jar and producing a working .mcaddon with correct textures and basic placement/destruction behaviour. Future versions aim to support items, entities and even complex logic. Double-click the
If the Java mod was built for an older version of Minecraft, the converter may use outdated Bedrock components. Method 2: The Manual Conversion Process
"type": "data", "uuid": "ANOTHER-GENERATED-UUID-HERE", "version": [1, 0, 0]
Right-click your target .jar file and select . Step 2: Convert the Textures and Models Repeat
To convert a JAR to an MCADDON, you must extract the Java assets and distribute them into the appropriate Resource and Behavior pack structures. Method 1: The Automated Approach (Using Conversion Tools)
Java and Bedrock do not share the same IDs.
| Problem | Likely Cause | Solution | |---------|--------------|----------| | Add‑on does not import | Corrupted .mcaddon structure or missing manifest.json | Verify that the .mcaddon contains two .mcpack files (not folders). Regenerate manifests with valid UUIDs. | | Block/item shows as missing texture | Texture path mismatch | Check that the texture PNG is inside textures/blocks/ or textures/items/ and that the block/item JSON references the correct short name. | | Modded entity does not move | Missing AI goals or incorrect geometry name | Compare the entity behaviour file with a working vanilla entity’s file. Ensure the geometry identifier matches the .geo.json filename. | | Custom recipe does not appear | Recipe JSON syntax error or wrong recipe type | Use a JSON validator. Check that the recipe file is placed in recipes/ and that item identifiers match those defined in your behaviour pack. |