Json Library Java -

import org.json.JSONObject; import org.json.JSONArray; JSONObject obj = new JSONObject(); obj.put("name", "David"); obj.put("age", 40);

// Deserialize User result = jsonb.fromJson(json, User.class); | Library | Serialization Speed | Deserialization Speed | Memory Usage | |---------|--------------------|----------------------|---------------| | Jackson | Fastest | Fastest | Moderate | | Gson | Fast | Fast | Low | | JSON-java | Slow | Slow | High (creates many objects) | | JSON-B (Yasson) | Moderate | Moderate | Moderate | json library java

System.out.println(obj.toString(2)); // pretty print with 2 spaces indent import org

@JsonIgnoreProperties(ignoreUnknown = true) public class User // ... JSONObject obj = new JSONObject()