Displaying Date by weekday name : Gregorian Calendar « Data Type « Java Tutorial

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Java Tutorial » Data Type » Gregorian Calendar

2. 40. 16. Displaying Date by weekday name


import static java.util.Calendar.DATE;

import static java.util.Calendar.DAY_OF_WEEK;

import static java.util.Calendar.MONTH;

import static java.util.Calendar.YEAR;

import java.text.DateFormatSymbols;

import java.util.GregorianCalendar;



public class MainClass {

  public static void main(String[] args) {



    GregorianCalendar birthdate = new GregorianCalendar(1999, 1, 1);

    GregorianCalendar today = new GregorianCalendar(); // Today's date

    GregorianCalendar birthday = new GregorianCalendar(today.get(YEAR), birthdate.get(MONTH),

        birthdate.get(DATE));

    int age = today.get(today.YEAR) - birthdate.get(YEAR);

    String[] weekdays = new DateFormatSymbols().getWeekdays(); // Get day names

    System.out.println("You were born on a " + weekdays[birthdate.get(DAY_OF_WEEK)]);

    System.out.println("This year you " + (birthday.after(today) ? " will be " : "are ") + age

        + " years old.");

    System.out.println("In " + today.get(YEAR) + " your birthday "

        + (today.before(birthday) ? "will be" : "was") + " on a "

        + weekdays[birthday.get(DAY_OF_WEEK)] + ".");

  }

}

You were born on a Monday
This year you  will be 8 years old.
In 2007 your birthday will be on a Thursday.

2. 40. Gregorian Calendar
	2. 40. 1.	Creating Gregorian Calendars
	2. 40. 2.	Specifying the locale(TimeZone) explicitly for Gregorian Calendar
	2. 40. 3.	Creating a Calendar object from a locale
	2. 40. 4.	Creating a Date Object for a Particular Date
	2. 40. 5.	Setting the Date and Time
	2. 40. 6.	Setting a GregorianCalendar object to a particular date
	2. 40. 7.	Integer constants for the third version of set()
	2. 40. 8.	Calendar.DAY_OF_WEEK
	2. 40. 9.	Set with GregorianCalendar.YEAR, MONTH and DATE
	2. 40. 10.	Getting Date and Time Information: get the day of the week
	2. 40. 11.	Using a switch statement on the values for day
	2. 40. 12.	Modifying Dates and Times: adding 14 to the year
	2. 40. 13.	To go into the past: making the second argument negative in the 'add' method
	2. 40. 14.	To increment or decrement a field of a calendar by 1 using the roll() method
	2. 40. 15.	Comparing Calendars
	2. 40. 16.	Displaying Date by weekday name
	2. 40. 17.	Printing out weekday names
	2. 40. 18.	Determine the day of the week

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