Date, time and calendar manipulation always seem to trouble average developers. Well it does for me too, sometimes. In this particular very simple tutorial, I have shown how we can create java.sql.date object and java.util.date object from Calendar object.
package com.kushal.utils.date;
import java.util.Calendar;
public class DateUsingCalendar {
/**
* @param year - an integer representing the year
* @param month - an integer from 0-11 (Jan - Dec)
* @param dayOfMonth - an integer from 1-31
*/
public static void createDateFromCalendar(int year, int month,
int dayOfMonth) {
/**
* Creates a current calendar using
* the default time zone and locale.
*/
Calendar myCalendar = Calendar.getInstance();
/**
* Resets all the attributes of calendar
*/
myCalendar.clear();
/**
* Let's try setting our values
*/
myCalendar.set(Calendar.YEAR, year);
myCalendar.set(Calendar.MONTH, month);
myCalendar.set(Calendar.DATE, dayOfMonth);
/**
* We will try creating a new sqlDate using this
* Calendar Object
*/
java.sql.Date sqlDateObj = new java.sql.Date(
myCalendar.getTimeInMillis());
/**
* We will try creating a new java util Date object
* using this Calendar Object
*/
java.util.Date utilDateObj = myCalendar.getTime();
/**
* Let's try printing these dates to the console
*/
System.out.println("Date in sql date format: "+sqlDateObj);
System.out.println("Date in util date format: "+utilDateObj);
}
public static void main(String[] args) {
int year=2009;
int month=5; //June (January being 0)
int dayOfMonth=11;
createDateFromCalendar(year, month, dayOfMonth);
}
}
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Here is the output:
Date in sql date format: 2009-06-11
Date in util date format: Thu Jun 11 00:00:00 CDT 2009
Originally posted 2009-05-11 14:46:57.
