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High-performance JSON processor for Java
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]
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);
}
}
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