CODEWITHSUNDEEP
javajson
Mincong Huang
Mincong Huang

Reputation: 5552

How to let Timestamp object show in type long in JSON?

I've a Java class User in my project and it has 2 attributes id and created.

User.java 

import java.sql.Timestamp;

public class User {

    private int id;
    private Timestamp created;

    public User (int id) {
        this.id = id;
        created = new Timestamp(System.currentTimeMillis());
    }
    // getters and setters...
}

Now I need to generate a JSON object representing an instance of User. So I use the org.json.JSONObject to do it :

User user = new User(1);
JSONObject json = new JSONObject(user);
System.out.println(json.toString());

Here's the result.

{"id":1,"created":"2016-03-02 19:08:00.0"}

However, I want a format in Long, which is like 

{"id":1,"created":1456945720000}

I think I might be able to change it by modifying the property in JSONObject, but I want to know if there's a better way.

Upvotes: 1

Views: 2589

Answers (1)

ojus kulkarni
ojus kulkarni

Reputation: 1907

Use .getTime() to convert in to long.
If you are getting an object in variable "created" then convert it into long :

created.getTime();

Upvotes: 2

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