Json Library Java -
<dependency> <groupId>org.json</groupId> <artifactId>json</artifactId> <version>20231013</version> </dependency>
public class User private String name; private int age; // constructors, getters, setters... json library java
| 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 | <dependency> <groupId>org
ObjectMapper mapper = new ObjectMapper(); User user = new User("Alice", 30); String json = mapper.writeValueAsString(user); System.out.println(json); // Output: "name":"Alice","age":30 public class User private String name
If you are dealing with massive files and cannot load the whole structure into memory, you need a Streaming API.