Jackson (API)
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| Stable release | 2.14.2 / January 29, 2023 |
|---|---|
| Repository | |
| Operating system | Cross-platform |
| Type | API for JSON |
| License | Apache License 2.0 |
| Website | github |
In computing, Jackson is a high-performance JSON processor for Java. Its developers extol the combination of fast, correct, lightweight, and ergonomic attributes of the library.[1][2]
Implementation[edit]
Jackson provides multiple approaches to working with JSON, including using binding annotations on POJO classes for simple use cases.[3][1]
Usage example[edit]
Sample code for reading and writing with POJOs may look like the following:[1]
public class ReadWriteJackson { public static void main(String[] args) throws IOException { ObjectMapper mapper = new ObjectMapper(); String jsonInput = "{\"id\":0,\"firstName\":\"Robin\",\"lastName\":\"Wilson\"}"; Person q = mapper.readValue(jsonInput, Person.class); System.out.println("Read and parsed Person from JSON: " + q); Person p = new Person("Roger", "Rabbit"); System.out.print("Person object " + p + " as JSON = "); mapper.writeValue(System.out, p); } }