Example usage for java.util Calendar getFirstDayOfWeek

Introduction

In this page you can find the example usage for java.util Calendar getFirstDayOfWeek.

Prototype

public int getFirstDayOfWeek()

Source Link

Document

Gets what the first day of the week is; e.g., SUNDAY in the U.S., MONDAY in France.

Usage

From source file:DaysOfTheWeek.java

public static void main(String argv[]) {
    Locale usersLocale = Locale.getDefault();

    DateFormatSymbols dfs = new DateFormatSymbols(usersLocale);
    String weekdays[] = dfs.getWeekdays();

    Calendar cal = Calendar.getInstance(usersLocale);

    int firstDayOfWeek = cal.getFirstDayOfWeek();
    int dayOfWeek;

    for (dayOfWeek = firstDayOfWeek; dayOfWeek < weekdays.length; dayOfWeek++)
        System.out.println(weekdays[dayOfWeek]);

    for (dayOfWeek = 0; dayOfWeek < firstDayOfWeek; dayOfWeek++)
        System.out.println(weekdays[dayOfWeek]);
}

From source file:Main.java

public static void main(String[] args) {

    Calendar cal = Calendar.getInstance();

    // print current first day of the week
    int day = cal.getFirstDayOfWeek();
    System.out.println("Current first day of the week:" + day);

    // set first day of the week as something else
    cal.setFirstDayOfWeek(Calendar.WEDNESDAY);

    // print altered first day of the week
    day = cal.getFirstDayOfWeek();//from w w w .  j  av a  2  s .  co m
    ;
    System.out.println("Altered first day of the week:" + day);
}

From source file:Main.java

public static void main(String[] args) {

    // create a new calendar
    Calendar cal = Calendar.getInstance();

    // print the first day of the week
    System.out.println("First day is :" + cal.getFirstDayOfWeek());
    int day = cal.getFirstDayOfWeek();
    switch (day) {
    case (1)://w w  w. java2s . co  m
        System.out.println("Sunday");
        break;
    case (2):
        System.out.println("Monday");
        break;
    case 3:
        System.out.println("Tuesday");
        break;
    case 4:
        System.out.println("Wednesday");
        break;
    case 5:
        System.out.println("Thrusday");
        break;
    case 6:
        System.out.println("Friday");
        break;
    case 7:
        System.out.println("Saturday");
        break;
    }
}

From source file:Main.java

private static void setStartOfWeekToCalendar(Calendar c) {
    c.set(Calendar.DAY_OF_WEEK, c.getFirstDayOfWeek());
    setStartOfDayToCalendar(c);/*  w  w  w . j a v  a  2s.com*/
    Log.d("La Cuenta: ", "Min of Current Week: " + DateFormat.getInstance().format(c.getTime()));
}

From source file:Main.java

/**
 *
 * @param weekIndex/*from w w w  .  j  av a2s.  co  m*/
 * @param calendar
 * @return
 */
public static int getWeekIndex(int weekIndex, Calendar calendar) {
    int firstDayWeekPosition = calendar.getFirstDayOfWeek();
    if (firstDayWeekPosition == 1) {
        return weekIndex;
    } else {
        if (weekIndex == 1) {
            return 7;
        } else {
            return weekIndex - 1;
        }
    }
}

From source file:Main.java

public static Date startOfThisWeek() {
    Calendar cal = Calendar.getInstance();

    int firstDay = cal.getFirstDayOfWeek();
    cal.set(Calendar.DAY_OF_WEEK, firstDay);

    return startOfDay(cal.getTime());
}

From source file:com.ekom.ekomerp.global.DateTimeUtils.java

public static Date getFirstDayOfWeek(Date date, Locale locale) {
    Calendar calendar = getCalendarWithoutTime(date, locale);
    calendar.set(Calendar.DAY_OF_WEEK, calendar.getFirstDayOfWeek());
    return calendar.getTime();
}

From source file:Main.java

public static long getStartOfWeek(long week) {
    Calendar calendar = getCalendarWithTime(week);
    calendar.set(Calendar.HOUR_OF_DAY, 0);
    calendar.clear(Calendar.MINUTE);
    calendar.clear(Calendar.SECOND);
    calendar.clear(Calendar.MILLISECOND);

    // get start of this week in milliseconds
    calendar.set(Calendar.DAY_OF_WEEK, calendar.getFirstDayOfWeek());

    return calendar.getTimeInMillis();
}

From source file:Main.java

/**
 * @param period : today, this_week, this_month, this_year, none
 * @return a date filter string for making query. e.g. date >= 2013-1-1 for this_year
 * return null if period is none.// w  w w .j a  va2 s .c o m
 */
@SuppressWarnings("deprecation")
public static String getDateFilterString(String period) {
    if (period == null)
        return null;
    Calendar calendar = Calendar.getInstance();
    int year = calendar.get(Calendar.YEAR);
    int month = calendar.get(Calendar.MONTH) + 1; // 1 - 12 
    int date = calendar.get(Calendar.DATE); // 1 - 31

    String dateFilterString = null;

    if (period.equalsIgnoreCase("today")) {
        dateFilterString = "date >= " + year + "-" + month + "-" + date;
    } else if (period.contains("week")) {
        int offset = calendar.get(Calendar.DAY_OF_WEEK) - calendar.getFirstDayOfWeek();
        long timeInMillis = calendar.getTimeInMillis() - offset * 24 * 60 * 60 * 1000;
        Date firstDay = new Date(timeInMillis);
        dateFilterString = "date >= " + (firstDay.getYear() + 1900) + "-" + firstDay.getMonth() + "-"
                + firstDay.getDate();
    } else if (period.contains("month")) {
        dateFilterString = "date >= " + year + "-" + month + "-1";
    } else if (period.contains("year")) {
        dateFilterString = "date >= " + year + "-1-1";
    }

    return dateFilterString;
}

From source file:Main.java

public static long getPeriodStart(int periodType, long date) {
    final Calendar cal = Calendar.getInstance();
    cal.setTimeInMillis(date);//from w  w w  .j  a v  a  2  s  . com

    switch (periodType) {
    case TYPE_DAY: {
        cal.set(Calendar.HOUR_OF_DAY, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 0);
        break;
    }

    case TYPE_WEEK: {
        cal.setFirstDayOfWeek(Calendar.MONDAY);
        final int currentDayOfWeek = (cal.get(Calendar.DAY_OF_WEEK) + 7 - cal.getFirstDayOfWeek()) % 7;
        cal.add(Calendar.DAY_OF_YEAR, -currentDayOfWeek);
        cal.set(Calendar.HOUR_OF_DAY, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 0);
        break;
    }

    case TYPE_MONTH: {
        cal.set(Calendar.DAY_OF_MONTH, 1);
        cal.set(Calendar.HOUR_OF_DAY, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 0);
        break;
    }

    case TYPE_YEAR: {
        cal.set(Calendar.MONTH, 0);
        cal.set(Calendar.DAY_OF_MONTH, 1);
        cal.set(Calendar.HOUR_OF_DAY, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 0);
        break;
    }
    }
    return cal.getTimeInMillis();
}