How to expert json file

how to expert json file???

do you want to export your data from JSON file into some DataTable?

no i need to add some json code in the user table so i need to download json file of the user to add some json code (so when user log in he will enter the other page that i will add json in it )
(like this video at 14:03 https://www.youtube.com/watch?v=uz2wShcFb0Y&list=PLaoF-xhnnrRU7DSfUMP8PGWJf-1UYBQZv&t=0s&index=3)

and also need to import it

let’s split your question into a few simple =)

  1. i need to add some json code in the user table - what do you mean here?
  2. i need to download json file of the user - not, sure that I understand what you want to do,
  3. on the video I can see Firebase - but Backendless and Firebase it’s not the same

I can propose you to take a look at our Quick Start Guide for Android https://backendless.com/docs/android/doc.html#quick_start_guide

And also here is a doc of Data Retrieving https://backendless.com/docs/android/doc.html#data_basic_search