Example usage for java.util Calendar clear

Introduction

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

Prototype

public final void clear() 

Source Link

Document

Sets all the calendar field values and the time value (millisecond offset from the Epoch) of this Calendar undefined.

Usage

From source file:Main.java

private static final Calendar getUtcDate(int year, int month, int dayOfMonth) {
    final Calendar calendar = Calendar.getInstance(UTC_TIMEZONE, Locale.US);
    calendar.clear();
    calendar.set(Calendar.YEAR, year);
    calendar.set(Calendar.MONTH, month);
    calendar.set(Calendar.DAY_OF_MONTH, dayOfMonth);
    return calendar;
}

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From source file:Main.java

/**
 * Set the provided calendar to the first day of the month. Also clears all time information.
 *
 * @param calendar {@linkplain Calendar} to modify to be at the first fay of the month
 *//*from   w w  w .  j a v  a2s  .com*/
public static void setToFirstDay(Calendar calendar) {
    int year = getYear(calendar);
    int month = getMonth(calendar);
    calendar.clear();
    calendar.set(year, month, 1);
}

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From source file:Main.java

/** Helper method - creates a <I>Date</I> object from the date string
found in Phoenix XML documents./*w  w  w.  ja  v a 2 s .c  o m*/
   @param strXMLDate Date <I>String</I> from an XML document that
  follows the format "YYYY-MM-DDTHH:NN:SS.00000".
   @return <I>Date</I> object.
 */
public static Date getDateFromXMLString(String strXMLDate) throws IllegalArgumentException {
    if (null == strXMLDate)
        return null;

    int nLength = strXMLDate.length();

    if (10 > nLength)
        throw new IllegalArgumentException(
                "XML date value (" + strXMLDate + ") is not of the expected format (yyyy-mm-ddThh:nn:ss).");

    // Create date object from timestamp string.
    try {
        Calendar pCalendar = Calendar.getInstance();

        pCalendar.clear();

        int nHour = 0;
        int nMinute = 0;
        int nSecond = 0;

        if (13 <= nLength)
            nHour = Integer.parseInt(strXMLDate.substring(11, 13));

        if (16 <= nLength)
            nMinute = Integer.parseInt(strXMLDate.substring(14, 16));

        if (19 <= nLength)
            nSecond = Integer.parseInt(strXMLDate.substring(17, 19));

        pCalendar.set(Integer.parseInt(strXMLDate.substring(0, 4)),
                Integer.parseInt(strXMLDate.substring(5, 7)) - 1, Integer.parseInt(strXMLDate.substring(8, 10)),
                nHour, nMinute, nSecond);

        return pCalendar.getTime();
    }

    catch (NumberFormatException pEx) {
        throw new IllegalArgumentException(
                "XML date value (" + strXMLDate + ") is not of the expected format (yyyy-mm-ddThh:nn:ss).");
    }
}

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From source file:Main.java

/**
 * Converts an XMLGregorianCalendar to a Date.
 *
 * @param xmlDate/*from ww w  .j  a  v  a2  s .co m*/
 *            XMLGregorianCalendar to convert.
 * @return corresponding date object.
 */
public static Date getDate(final XMLGregorianCalendar xmlDate) {
    // TODO: is this equivalent to getDate(String) processing above??

    // start with UTC, i.e. no daylight savings time.
    TimeZone timezone = TimeZone.getTimeZone("GMT");

    // adjust timezone to match xmldate
    int offsetMinutes = xmlDate.getTimezone();
    if (offsetMinutes != DatatypeConstants.FIELD_UNDEFINED) {
        timezone.setRawOffset(
                // convert minutes to milliseconds
                offsetMinutes * 60 // seconds per minute
                        * 1000 // milliseconds per second
        );
    }

    // use calendar so parsed date will be UTC
    Calendar calendar = Calendar.getInstance(timezone);
    calendar.clear();
    calendar.set(xmlDate.getYear(),
            // xmlcalendar is 1 based, calender is 0 based
            xmlDate.getMonth() - 1, xmlDate.getDay(), xmlDate.getHour(), xmlDate.getMinute(),
            xmlDate.getSecond());
    Date date = calendar.getTime();
    int millis = xmlDate.getMillisecond();
    if (millis != DatatypeConstants.FIELD_UNDEFINED) {
        calendar.setTimeInMillis(calendar.getTimeInMillis() + millis);
    }

    return date;
}

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From source file:Main.java

private static Calendar cal(TimeZone tz) {
    Calendar cal = (tz != null) ? new GregorianCalendar(tz) : new GregorianCalendar();
    cal.clear();
    return cal;//from w  w  w.  ja  v a  2s.  co  m
}

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From source file:ru.retbansk.utils.marshaller.Jaxb2MarshallerTest.java

@BeforeClass
public static void beforeClass() {
    TaskReport taskReport = new TaskReport();
    Date date = new Date();
    Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("GMT"));
    calendar.clear();
    calendar.set(Calendar.DATE, 1);
    calendar.set(Calendar.MONTH, Calendar.JANUARY);
    calendar.set(Calendar.YEAR, 1981);
    date = calendar.getTime();//  w  ww . j a va  2s  .c  o  m
    taskReport.setDate(date);
    taskReport.setElapsedTime(4);
    taskReport.setStatus(STATUS);
    taskReport.setWorkDescription(WORK_DESCRIPTION);
    list = new ArrayList<TaskReport>();
    list.add(taskReport);

}

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From source file:Main.java

/**
 * Copy <i>only</i> date information to a new calendar.
 *
 * @param from calendar to copy from/*w  w w.  ja va 2  s.co  m*/
 * @param to   calendar to copy to
 */
public static void copyDateTo(Calendar from, Calendar to) {
    int year = getYear(from);
    int month = getMonth(from);
    int day = getDay(from);
    to.clear();
    to.set(year, month, day);
}

---

From source file:Main.java

/**
 * Parses an xs:dateTime attribute value, returning the parsed timestamp in milliseconds since
 * the epoch./*from   w ww . j a  v a 2  s .  c o m*/
 *
 * @param value The attribute value to parse.
 * @return The parsed timestamp in milliseconds since the epoch.
 */
public static long parseXsDateTime(String value) throws ParseException {
    Matcher matcher = XS_DATE_TIME_PATTERN.matcher(value);
    if (!matcher.matches()) {
        throw new ParseException("Invalid date/time format: " + value, 0);
    }

    int timezoneShift;
    if (matcher.group(9) == null) {
        // No time zone specified.
        timezoneShift = 0;
    } else if (matcher.group(9).equalsIgnoreCase("Z")) {
        timezoneShift = 0;
    } else {
        timezoneShift = ((Integer.parseInt(matcher.group(12)) * 60 + Integer.parseInt(matcher.group(13))));
        if (matcher.group(11).equals("-")) {
            timezoneShift *= -1;
        }
    }

    Calendar dateTime = new GregorianCalendar(TimeZone.getTimeZone("GMT"));

    dateTime.clear();
    // Note: The month value is 0-based, hence the -1 on group(2)
    dateTime.set(Integer.parseInt(matcher.group(1)), Integer.parseInt(matcher.group(2)) - 1,
            Integer.parseInt(matcher.group(3)), Integer.parseInt(matcher.group(4)),
            Integer.parseInt(matcher.group(5)), Integer.parseInt(matcher.group(6)));
    if (!TextUtils.isEmpty(matcher.group(8))) {
        final BigDecimal bd = new BigDecimal("0." + matcher.group(8));
        // we care only for milliseconds, so movePointRight(3)
        dateTime.set(Calendar.MILLISECOND, bd.movePointRight(3).intValue());
    }

    long time = dateTime.getTimeInMillis();
    if (timezoneShift != 0) {
        time -= timezoneShift * 60000;
    }

    return time;
}

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From source file:org.spring.data.gemfire.cache.UserDataStoreCacheLoader.java

protected static Calendar createCalendar(final int year, final int month, final int dayOfMonth,
        final int hourOfDay, final int minute, final int second) {
    Calendar dateTime = Calendar.getInstance();

    dateTime.clear();
    dateTime.set(Calendar.YEAR, year);
    dateTime.set(Calendar.MONTH, month);
    dateTime.set(Calendar.DAY_OF_MONTH, dayOfMonth);
    dateTime.set(Calendar.HOUR_OF_DAY, dayOfMonth);
    dateTime.set(Calendar.MINUTE, minute);
    dateTime.set(Calendar.SECOND, second);

    return dateTime;
}

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From source file:Main.java

/**
 * Copy <i>only</i> date information to a new calendar.
 *
 * @param from calendar to copy from// w  ww . j a v a2  s  .co  m
 * @param to calendar to copy to
 */
public static void copyDateTo(Calendar from, Calendar to) {
    int year = getYear(from);
    int month = getMonth(from);
    int day = getDay(from);
    to.clear();
    to.set(year, month, day);
    to.getTimeInMillis();
}

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