JSON (JavaScript Object Notation) has become the lingua franca of data exchange in modern web services, configuration files, and NoSQL databases. If you're a Java developer, you've likely faced the question: Which JSON library should I use?
import com.google.gson.Gson; Gson gson = new Gson(); User user = new User("Charlie", 35); String json = gson.toJson(user); json library java
String json = "\"name\":\"Bob\",\"age\":25"; User user = mapper.readValue(json, User.class); System.out.println(user.getName()); // Bob JSON (JavaScript Object Notation) has become the lingua
ObjectMapper mapper = new ObjectMapper(); User user = new User("Alice", 30); String json = mapper.writeValueAsString(user); System.out.println(json); // Output: "name":"Alice","age":30 Gson gson = new Gson()
// 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 |