How to convert a map to JSON in Android?

In Android, the JSONObject class can be used to convert a Map object into JSON format. Here is an example code snippet:

import org.json.JSONObject;
import java.util.Map;

public class MapToJsonConverter {

    public static String mapToJson(Map<String, String> map) {
        JSONObject jsonObject = new JSONObject(map);
        return jsonObject.toString();
    }

    public static void main(String[] args) {
        Map<String, String> map = new HashMap<>();
        map.put("key1", "value1");
        map.put("key2", "value2");

        String json = mapToJson(map);
        System.out.println(json);
    }
}

Firstly, in the above code, a Map object is created and populated with data. Next, the mapToJson method is called to convert the Map object into a JSONObject object. Finally, the JSONObject object is converted into a JSON formatted string by calling the toString() method, and then printed out.