Example usage for java.util GregorianCalendar GregorianCalendar

Introduction

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

Prototype

public GregorianCalendar()

Source Link

Document

Constructs a default GregorianCalendar using the current time in the default time zone with the default Locale.Category#FORMAT FORMAT locale.

Usage

From source file:Main.java

/**
 * Given a calendar (possibly containing only a day of the year), returns the earliest possible
 * anniversary of the date that is equal to or after the current point in time if the date
 * does not contain a year, or the date converted to the local time zone (if the date contains
 * a year./*  w w  w.j  a va2 s . co m*/
 *
 * @param target The date we wish to convert(in the UTC time zone).
 * @return If date does not contain a year (year < 1900), returns the next earliest anniversary
 * that is after the current point in time (in the local time zone). Otherwise, returns the
 * adjusted Date in the local time zone.
 */
public static Date getNextAnnualDate(Calendar target) {
    final Calendar today = Calendar.getInstance();
    today.setTime(new Date());

    // Round the current time to the exact start of today so that when we compare
    // today against the target date, both dates are set to exactly 0000H.
    today.set(Calendar.HOUR_OF_DAY, 0);
    today.set(Calendar.MINUTE, 0);
    today.set(Calendar.SECOND, 0);
    today.set(Calendar.MILLISECOND, 0);

    final boolean isYearSet = isYearSet(target);
    final int targetYear = target.get(Calendar.YEAR);
    final int targetMonth = target.get(Calendar.MONTH);
    final int targetDay = target.get(Calendar.DAY_OF_MONTH);
    final boolean isFeb29 = (targetMonth == Calendar.FEBRUARY && targetDay == 29);
    final GregorianCalendar anniversary = new GregorianCalendar();
    // Convert from the UTC date to the local date. Set the year to today's year if the
    // there is no provided year (targetYear < 1900)
    anniversary.set(!isYearSet ? today.get(Calendar.YEAR) : targetYear, targetMonth, targetDay);
    // If the anniversary's date is before the start of today and there is no year set,
    // increment the year by 1 so that the returned date is always equal to or greater than
    // today. If the day is a leap year, keep going until we get the next leap year anniversary
    // Otherwise if there is already a year set, simply return the exact date.
    if (!isYearSet) {
        int anniversaryYear = today.get(Calendar.YEAR);
        if (anniversary.before(today) || (isFeb29 && !anniversary.isLeapYear(anniversaryYear))) {
            // If the target date is not Feb 29, then set the anniversary to the next year.
            // Otherwise, keep going until we find the next leap year (this is not guaranteed
            // to be in 4 years time).
            do {
                anniversaryYear += 1;
            } while (isFeb29 && !anniversary.isLeapYear(anniversaryYear));
            anniversary.set(anniversaryYear, targetMonth, targetDay);
        }
    }
    return anniversary.getTime();
}

From source file:edu.stanford.muse.email.CalendarUtil.java

public static String getDisplayMonth(Date d) {
    Calendar c = new GregorianCalendar();
    c.setTime(d);
    return getDisplayMonth(c);
}

From source file:com.esofthead.mycollab.core.utils.DateTimeUtils.java

public static Date getCurrentDateWithoutMS() {
    GregorianCalendar calendar = new GregorianCalendar();
    calendar.set(Calendar.SECOND, 0);
    calendar.set(Calendar.MINUTE, 0);
    return calendar.getTime();
}

From source file:com.mycompany.app.Section.java

public Section() {
    studentsInClass = 0;
    students = 0;
    location = null;
    startTime = endTime = new GregorianCalendar();
}

From source file:com.google.code.rptm.mailarchive.YearMonth.java

/**
 * Construct a new instance with the year and month given by the current data.
 *///from  w ww  .ja v a 2s  .c o  m
public YearMonth() {
    GregorianCalendar cal = new GregorianCalendar();
    year = cal.get(Calendar.YEAR);
    month = cal.get(Calendar.MONTH) + 1;
}

From source file:Main.java

public static XMLGregorianCalendar getXMLDate(final Calendar calendar) {
    GregorianCalendar c;/*ww w .  ja va2 s  .co m*/
    if (calendar instanceof GregorianCalendar) {
        c = (GregorianCalendar) calendar;
    } else {
        c = new GregorianCalendar();
        c.setTimeZone(UTC);
        c.setTime(calendar.getTime());
    }

    try {
        XMLGregorianCalendar ret = DatatypeFactory.newInstance().newXMLGregorianCalendar(c);
        ret.setMillisecond(DatatypeConstants.FIELD_UNDEFINED);
        return ret;
    } catch (DatatypeConfigurationException e) {
        return null;
    }
}

From source file:com.aw.core.format.FechaEnTextoFormatter.java

public Object format(Object attributeValue) {
    Date date = (Date) attributeValue;
    Calendar cal = new GregorianCalendar();
    cal.setTime(date);//from   www .j  a  va2s .  c o m
    int anio = cal.get(Calendar.YEAR);
    int mes = cal.get(Calendar.MONTH);
    int dia = cal.get(Calendar.DAY_OF_MONTH);
    Map meses = buildMesesMap();
    String valor = dia + " de " + meses.get(mes) + " del " + anio;
    return valor;
}

From source file:org.hoteia.qalingo.app.business.job.email.EmailCleanerTasklet.java

public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception {
    GregorianCalendar calendar = new GregorianCalendar();
    int day = calendar.get(GregorianCalendar.DAY_OF_YEAR);

    // TODO : Denis : 20130924 : add number of day configuration in database

    calendar.set(GregorianCalendar.DAY_OF_YEAR, day - 7);
    int row = emailService.deleteSendedEmail(new Timestamp(calendar.getTimeInMillis()));
    logger.debug(row + " emails deleted");
    return RepeatStatus.FINISHED;
}

From source file:org.hoteia.qalingo.app.business.job.status.ServerStatusCleanerTasklet.java

public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception {
    GregorianCalendar calendar = new GregorianCalendar();
    int day = calendar.get(GregorianCalendar.DAY_OF_YEAR);

    // TODO : Denis : 20131209 : add number of day configuration in database ?

    calendar.set(GregorianCalendar.DAY_OF_YEAR, day - 7);
    int row = serverService.deleteSendedServerStatus(new Timestamp(calendar.getTimeInMillis()));
    logger.debug(row + " server status deleted");
    return RepeatStatus.FINISHED;
}

From source file:com.github.dozermapper.core.converters.CalendarConverter.java

public Object convert(Class destClass, Object srcObj) {
    Calendar result = new GregorianCalendar();
    Class srcFieldClass = srcObj.getClass();
    // Convert from Date to Calendar
    if (java.util.Date.class.isAssignableFrom(srcFieldClass)) {
        result.setTime((java.util.Date) srcObj);
    } else if (Calendar.class.isAssignableFrom(srcFieldClass)) {
        //  Convert from Calendar to Calendar
        Calendar c = (Calendar) srcObj;
        result.setTime(c.getTime());//from   ww  w  .  java  2  s.  c  o m
        result.setTimeZone(c.getTimeZone());
    } else if (XMLGregorianCalendar.class.isAssignableFrom(srcFieldClass)) {
        Calendar c = ((XMLGregorianCalendar) srcObj).toGregorianCalendar();
        result.setTime(c.getTime());
        result.setTimeZone(c.getTimeZone());
    } else if (dateFormat != null && String.class.isAssignableFrom(srcFieldClass)) {
        // String to Calendar
        try {
            result.setTime(new Date(dateFormat.parse((String) srcObj).getTime()));
        } catch (ParseException e) {
            throw new ConversionException("Unable to parse source object using specified date format", e);
        }
    } else {
        // Default conversion
        try {
            result.setTime(new Date(Long.parseLong(srcObj.toString())));
        } catch (NumberFormatException e) {
            throw new ConversionException("Unable to determine time in millis of source object", e);
        }
    }

    // Calendar to String
    if (dateFormat != null && String.class.isAssignableFrom(destClass)) {
        return dateFormat.format(result.getTime());
    }

    return result;
}