How to convert data into calender - java Example

The following expample expalin's, how to convert data and time in to  calender object

package com.onlinecodegeek.javase.date
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

public class DateInToCalendar {
 public static void main(String[] argv) throws ParseException {

  //1. Create a Date from String
  SimpleDateFormat sdf = new SimpleDateFormat("dd-M-yyyy hh:mm:ss");
  String dateInString = "26-08-2015 10:20:56";
  Date date = sdf.parse(dateInString);
                DateAndCalendar obj = new DateAndCalendar();

  //2. Test - Convert Date to Calendar
  Calendar calendar = obj.dateToCalendar(date);
  System.out.println(calendar.getTime());
  
  //3. Test - Convert Calendar to Date
  Date newDate = obj.calendarToDate(calendar);
  System.out.println(newDate);

 }

 //Convert Date to Calendar
 private Calendar dateToCalendar(Date date) {

  Calendar calendar = Calendar.getInstance();
  calendar.setTime(date);
  return calendar;

 }

 //Convert Calendar to Date
 private Date calendarToDate(Calendar calendar) {
  return calendar.getTime();
 }

}

Wed Aug 26 10:20:56 IST 2015 Wed Aug 26 10:20:56 IST 2015

 

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Display Date and Time using java

In this example, we are going look in to details about Date and
Calendar objects. The following example is describes how to display current date and time.

File Name : CurrentDateTime.java

Output :

Example 1 
 
Current Date & Time : 08/03/2014 13:46:19


Example 2 
 
Current Date & Time : 08/03/2014 13:46:19

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Dive in to Java Calendar

Date and time is most commonly used concepts in projects. In this post, we look in to the basic concepts of Calendar object and we will discussion about how to use in projects.

The Calendar
is an abstract class that provides methods for converting between a specific instant in time.

• calendar fields are YEAR, MONTH, DAY_OF_MONTH, HOUR, and so on.


• It is used for manipulating date and time.

Syntax

	 Calendar calendar = Calendar.getInstance();
	 

is a concrete class is used for formatting and parsing dates in a locale-sensitive manner.

It allows for formatting (date -> text), parsing (text -> date), and normalization.It also supports localized date and time pattern strings

	Date and Time Pattern	          Result
	
	"yyyy.MM.dd G 'at' HH:mm:ss z"	2001.07.04 AD at 12:08:56 PDT
	"EEE, MMM d, ''yy"				Wed, Jul 4, '01
	"h:mm a"						12:08 PM
	"hh 'o''clock' a, zzzz"			12 o'clock PM, Pacific Daylight Time
	"K:mm a, z"						0:08 PM, PDT
	"yyyyy.MMMMM.dd GGG hh:mm aaa"	02001.July.04 AD 12:08 PM
	"EEE, d MMM yyyy HH:mm:ss Z"	Wed, 4 Jul 2001 12:08:56 -0700
	"yyMMddHHmmssZ"					010704120856-0700
	"yyyy-MM-dd'T'HH:mm:ss.SSSZ"	2001-07-04T12:08:56.235-0700
	

Example

• Display current date and time

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