Boon - Long To Date


ObjectMapper class can be used to work with different date formats in JSON. It can be used to parse/generate long version of date.


Following example is using ObjectMapper class to generate a Date string from a long version.

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.create();      
      String jsonString = "{\"name\":\"Mahesh\", \"age\":21, \"dateOfBirth\":976559400000}";
      //mapper converts long to date automatically
      Student student = mapper.readValue(jsonString, Student.class);
      //by default mapper converts date to long
      jsonString = mapper.writeValueAsString(student);
class Student {
   public String name;
   public int age;
   public Date dateOfBirth;
   public Student(String name, int age, Date dateOfBirth) { = name;
      this.age = age;
      this.dateOfBirth = dateOfBirth;


Given below is the output of the code −

Tue Dec 12 00:00:00 IST 2000