How and in what format to send multiple values ​​in a server response?

Question

Java

When sending data as a POST request on the server, everything is conveniently ordered into an array. The question arises: how to send several values ​​in the response so as not to examine the string several times and not split the response? What is better to send, in regular html, json or xml? or are there other options?

Answer 1

json. Don't thank.