For a "patched" or automated conversion, you generally use one of the following community-driven toolkits:
Java uses individual .png files that usually map directly, but you may need to reorganize the folders to match the Bedrock directory ( textures/blocks , textures/items ).
:Because Java mods use APIs (like Forge or Fabric) that Bedrock does not support, complex logic must often be rewritten manually using Bedrock’s JSON-based components or the Scripting API. Structure of a Converted .mcaddon
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Converting a .jar file (Java Edition mod) into a .mcaddon (Bedrock Edition) is a complex process because the two versions of Minecraft use entirely different coding languages—Java for the former and C++ with JSON for the latter.
: Organize your mod's assets (items, blocks, etc.) into the MCAddon structure.
Extract assets from the .jar
This is the only method that creates an .mcaddon that actually contains the original .jar file. It uses a hacked Bedrock launcher to run a Java Virtual Machine (JVM) inside Bedrock.