Determine the day of the week : Gregorian Calendar « Data Type « Java Tutorial

import java.util.Calendar;
import java.util.GregorianCalendar;

public class Main {
  public static void main(String[] argv) throws Exception {

    GregorianCalendar newCal = new GregorianCalendar();
    int day = newCal.get(Calendar.DAY_OF_WEEK);

    newCal = new GregorianCalendar();
    newCal.set(1997, 2, 1, 0, 0, 0);
    day = newCal.get(Calendar.DAY_OF_WEEK);


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()
2.40.9.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