How do I format a date-time value?

In the DateFormat class there are some predefined constants that we can use to format a date time value. Here is an example of it.

package org.kodejava.text;

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

public class DefaultDateFormatExample {
    public static void main(String[] args) {
        Date date = new Date();

        // Format date in a short format
        String today = DateFormat.getDateTimeInstance(DateFormat.SHORT,
                DateFormat.SHORT).format(date);
        System.out.println("Today " + today);

        // Format date in a medium format
        today = DateFormat.getDateTimeInstance(DateFormat.MEDIUM,
                DateFormat.MEDIUM).format(date);
        System.out.println("Today " + today);

        // Format date in a long format
        today = DateFormat.getDateTimeInstance(DateFormat.LONG,
                DateFormat.LONG).format(date);
        System.out.println("Today " + today);
    }
}

And you’ll see the result as follows:

Today 9/24/21 9:40 AM
Today Sep 24, 2021 9:40:28 AM
Today September 24, 2021 9:40:28 AM CST

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