List<String> to Json String

Question

How can I convert a List to a Json String?

I have managed to do it the other way round, but not this way.

I also don't know how I can specify the names of the keys then..

Answer 1

You can use the Gson Library.

List<String> list;
String json = new Gson().toJson(list);

Edited:

Just to have the complete answer here: The problem is that you are converting the json String into a List<String>. This way you are losing the relation key-value. The correct should be convert the json string into a HashMap<>.