Java Utililty Methods Day of Week

List of utility methods to do Day of Week

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Description

The list of methods to do Day of Week are organized into topic(s).

Method

DategetDayAfterGivenDate(Date date, int dayOfWeek)
Find the given day of the week (sunday, monday etc.) that falls before the given date 
Calendar cal = Calendar.getInstance();
cal.setTime(date);
int originalDayOfWeek = cal.get(Calendar.DAY_OF_WEEK);
int dayDiff = dayOfWeek - originalDayOfWeek;
if (dayDiff <= 0) {
    dayDiff += 7;
cal.add(Calendar.DATE, dayDiff);
...
StringgetDayOfWeek()
get Day Of Week 
String dow = "";
SimpleDateFormat sdf = new SimpleDateFormat("E");
String day = sdf.format(new Date()).toLowerCase();
if (day.equals("sun")) {
    dow = "1";
} else if (day.equals("mon")) {
    dow = "2";
} else if (day.equals("tue")) {
...
intgetDayOfWeek(Date date)
get Day Of Week 
Calendar cal = Calendar.getInstance();
cal.setTime(date);
int w = cal.get(Calendar.DAY_OF_WEEK) - 1;
if (w < 0) {
    w = 1;
if (w == 0) {
    w = 7;
...
intgetDayOfWeek(int _year, int _month, int _day)
get Day Of Week 
int year, month, date;
Calendar cal = Calendar.getInstance();
cal.set(_year, _month - 1, _day);
return cal.get(Calendar.DAY_OF_WEEK);
int[]getDayOfWeek(int year, int month, int day)
get Day Of Week 
int[] rtn = new int[6];
int week = 0;
long longDate = 0;
java.util.Date date = null;
Calendar calendar1 = Calendar.getInstance();
Calendar calendar2 = Calendar.getInstance();
Calendar calendar = Calendar.getInstance();
calendar.set(year, month - 1, day);
...
intgetDayOfWeek(int year, int month, int day)
get Day Of Week 
Calendar calendar = Calendar.getInstance();
if (year > -1) {
    calendar.set(Calendar.YEAR, year);
if (month > -1) {
    month--;
    calendar.set(Calendar.MONTH, month);
if (day > -1) {
    calendar.set(Calendar.DAY_OF_MONTH, day);
return calendar.get(Calendar.DAY_OF_WEEK);
intgetDayOfWeek(String date, String pattern)
get Day Of Week 
Calendar c = Calendar.getInstance();
int result = -1;
SimpleDateFormat sdf = new SimpleDateFormat(pattern);
Date d = sdf.parse(date);
c.setTime(d);
result = c.get(Calendar.DAY_OF_WEEK) - 1;
return result;
intgetDayOfWeek(String datetime)
get Day Of Week 
Calendar cal = Calendar.getInstance();
cal.setTime(parseDate(datetime));
return cal.get(Calendar.DAY_OF_WEEK) - 1;
IntegergetDayOfWeek(String f)
get Day Of Week 
Integer dayOfWeek;
try {
    SimpleDateFormat format1 = new SimpleDateFormat("MM/dd/yyyy");
    Date dt1 = format1.parse(f);
    DateFormat format2 = new SimpleDateFormat("u");
    dayOfWeek = Integer.valueOf(format2.format(dt1));
} catch (Exception ex) {
    dayOfWeek = new Integer(-1);
...
StringgetDayOfWeek(String format, int calendarField)
get Day Of Week 
String strDate = null;
try {
    Calendar c = new GregorianCalendar();
    SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat(format);
    int week = c.get(Calendar.DAY_OF_WEEK);
    if (week == calendarField) {
        strDate = mSimpleDateFormat.format(c.getTime());
    } else {
...