Map to Json (Java/Kotlin/Android)

import org.json.JSONObject

val data = mapOf(    "name" to "Desmond",    "age" to 40,    "friends" to listOf("Jack", "Mei Ru", "Han"))val jsonString = JSONObject(data).toString()

{"name":"Desmond","age":40,"friends":["Jack","Mei Ru","Han"]}