Json | Library Java

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

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

String json = "\"name\":\"Bob\",\"age\":25"; User user = mapper.readValue(json, User.class); System.out.println(user.getName()); // Bob If you're working in a full Jakarta EE

User user = gson.fromJson(json, User.class); Maven Dependencies <

JSONArray hobbies = new JSONArray(); hobbies.put("reading"); hobbies.put("swimming"); obj.put("hobbies", hobbies);

String jsonString = "\"name\":\"Eve\",\"age\":28"; JSONObject obj = new JSONObject(jsonString); String name = obj.getString("name"); int age = obj.getInt("age"); JSON-B (JSR 367) is part of Jakarta EE. It provides a standard API similar to JAXB for XML. If you're working in a full Jakarta EE environment or prefer a vendor-neutral approach, this is your choice. Implementation JSON-B is just a specification. You need an implementation like Eclipse Yasson or Apache Johnzon . Maven Dependencies <!-- API --> <dependency> <groupId>jakarta.json.bind</groupId> <artifactId>jakarta.json.bind-api</artifactId> <version>3.0.0</version> </dependency> <!-- Implementation (Yasson) --> <dependency> <groupId>org.eclipse</groupId> <artifactId>yasson</artifactId> <version>3.0.3</version> </dependency> <!-- Also needs JSON-P for parsing --> <dependency> <groupId>jakarta.json</groupId> <artifactId>jakarta.json-api</artifactId> <version>2.1.1</version> </dependency> Basic Examples import jakarta.json.bind.Jsonb; import jakarta.json.bind.JsonbBuilder; Jsonb jsonb = JsonbBuilder.create();

// Serialize User user = new User("Frank", 45); String json = jsonb.toJson(user);