Convert Date format

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

public class Test2 {

    public static void main(String[] args) {
        Calendar calendar = Calendar.getInstance();
        //set date to 2014, January 12 16:25:20
        calendar.set(2014, 0, 12, 16, 25, 20);
        Date date = calendar.getTime();

        //format to MM/dd/YYY HH:mm.ss (24 hour format)
        SimpleDateFormat sdf1 = new SimpleDateFormat("MM/dd/YYY HH:mm.ss");
        String dateString = sdf1.format(date);
        System.out.println(dateString);

        //format to MM/dd/YYY hh:mm.ss aa (12 hour format)
        sdf1 = new SimpleDateFormat("MM/dd/YYY hh:mm.ss aa");
        dateString = sdf1.format(date);
        System.out.println(dateString);
    }

}

Reference:

1. SimpleDateFormat
2. Creating and converting Date and Time in Java 8

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