This is the most difficult part. You cannot "convert" Java code to Bedrock JSON/JS automatically.
import world, system from '@minecraft/server'; system.runInterval(() => for (let player of world.getAllPlayers()) // Custom Java logic rewritten in JS Convert Jar To Mcaddon
Bedrock addons require a specific folder structure consisting of and Resource Packs (RP) . Move textures and models into the Resource Pack folder. This is the most difficult part