Jackson (API)

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
Stable release
2.12.5 / August 27, 2021 (2021-08-27)
Preview release
2.13.0-rc2 / August 27, 2021 (2021-08-27)
Repository
Operating systemCross-platform
TypeAPI for JSON
LicenseApache License 2.0
Websitegithub.com/FasterXML/jackson 

Implementation

Jackson provides multiple approaches to working with JSON, including using binding annotations on POJO classes for simple use cases.[3][1]

Usage example

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);
  }
}

References
  1. "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.
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