Jackson (API)

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Stable release
2.12.5 / August 27, 2021; 10 months ago (2021-08-27)
Preview release
2.13.0-rc2 / August 27, 2021; 10 months ago (2021-08-27)
Operating systemCross-platform
TypeAPI for JSON
LicenseApache License 2.0
Websitegithub.com/FasterXML/jackson Edit this on Wikidata

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]


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);


  1. ^ a b c "History". FasterXML. FasterXML. Archived from the original on 11 February 2016. Retrieved 12 February 2016.
  2. ^ Young, T.M. (2013). The Jackson Cookbook. Leanpub.
  3. ^ Darwin, I.F. (2014). Java Cookbook (3rd ed.). Sebastopol, USA: O'Reilly. pp. 656–657.

External links[edit]