How do I convert ""MMM dd, yyyy HH:mm a" to "yyyy-mm-dd hh:mm:ss" in Java?

byMR

March 6, 2023

OBJECTIVE:

Input value: "Feb 26, 2022 1:56 PM"

Get the equivalent date time value of the above input value in the format of "yyyy-mm-dd hh:mm:ss"

Expected Result: 2022-02-26 13:56:00

The code which I tried:

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

class convertDateTime{
    public static void main(String[] args) throws Exception{

  SimpleDateFormat inputFormat = new SimpleDateFormat("MMM dd, yyyy HH:mm a");
  Date date;
  date = inputFormat.parse("Feb 26, 2022 1:56 PM");
  SimpleDateFormat outputFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
  System.out.println(outputFormat.format(date));
    }
}

The output (incorrect) I get when I run the above program:

2022-02-26 01:56:00

What am I missing?

>Solution :

You have used the wrong format. Checkout details at https://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatter.html. Following is the running code.

public static void main(String[] args) throws Exception {
    SimpleDateFormat inputFormat = new SimpleDateFormat("MMM dd, yyyy hh:mm a");
    Date date = inputFormat.parse("Feb 26, 2022 1:56 PM");
    SimpleDateFormat outputFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    System.out.println(outputFormat.format(date));
}

Output 2022-02-26 13:56:00