ObjectMapper class can be used to work with different date formats in JSON. It can be used to generate date object as well. By default ObjectMapper generates Date in long milliseconds version. Using ObjectMapper returned by JsonFactory.createUseJSONDates() method, we can get a string version of date during parsing.

Example

Following example is using ObjectMapper class to generate a Date string by parsing JSON.

import java.util.Date;
import org.boon.json.JsonFactory;
import org.boon.json.ObjectMapper;

public class BoonTester {
   public static void main(String args[]) {
      ObjectMapper mapper = JsonFactory.createUseJSONDates();     
      String jsonString = "{"name":"Mahesh", "age":21, "dateOfBirth":"1998-08-11T11:31:00.034Z" }";
      
      //mapper converts String to date automatically
      Student student = mapper.readValue(jsonString, Student.class);
      System.out.println(student.dateOfBirth);    
      
      //Mapper converts date to date string now
      jsonString = mapper.writeValueAsString(student);
      System.out.println(jsonString);    
   }
}
class Student {
   public String name;
   public int age;
   public Date dateOfBirth;
   public Student(String name, int age, Date dateOfBirth) {
      this.name = name;
      this.age = age;
      this.dateOfBirth = dateOfBirth;
   }
}

Output

You will receive the following output −

Tue Aug 11 17:01:00 IST 1998
{"name":"Mahesh","age":21,"dateOfBirth":"1998-08-11T11:31:00.034Z"}