List> to org.json.JSONObject?

Question

List> list = new ArrayList>();
Map map = new HashMap();

         


        

Answer 1

You can do it using both:

JSONArray directly as,

String toJson(Collection> list)
{       
    return new JSONArray(list).toString();
}

Or by iterating the list with Java8 (like @ShadowJohn solution):

String toJson(Collection> list)
{       
    return new JSONArray( 
            list.stream()
                .map((map) -> new JSONObject(map))
            .collect(Collectors.toList()))
        .toString();
}