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

static Calendar toNearestWholeHour(Calendar d) {
    Calendar c = new GregorianCalendar();
    c.setTime(d.getTime());//from   w w  w  . j  a va 2s .c  o  m

    if (c.get(Calendar.MINUTE) >= 30)
        c.add(Calendar.HOUR, 1);

    c.set(Calendar.MINUTE, 0);
    c.set(Calendar.SECOND, 0);

    return c;
}

From source file:Main.java

static Calendar toNearestWholeMinute(Calendar d) {
    Calendar c = new GregorianCalendar();
    c.setTime(d.getTime());/*from   w ww  .  jav  a  2s . com*/

    if (c.get(Calendar.SECOND) >= 30)
        c.add(Calendar.MINUTE, 1);

    c.set(Calendar.SECOND, 0);

    return c;
}

From source file:Main.java

public static int getYears(int year, int month, int day) {

    GregorianCalendar cal = new GregorianCalendar();
    int y, m, d, noofyears;

    y = cal.get(Calendar.YEAR);// current year ,
    m = cal.get(Calendar.MONTH);// current month 
    d = cal.get(Calendar.DAY_OF_MONTH);//current day
    cal.set(year, month, day);// here ur date 
    noofyears = y - cal.get(Calendar.YEAR);
    if ((m < cal.get(Calendar.MONTH))
            || ((m == cal.get(Calendar.MONTH)) && (d < cal.get(Calendar.DAY_OF_MONTH)))) {
        --noofyears;/*from  w ww .  ja v  a  2s .com*/
    }
    try {
        if (noofyears < 0)
            throw new IllegalArgumentException("age < 0");
    } catch (IllegalArgumentException ile) {
        ile.printStackTrace();
    }
    System.out.println(noofyears);
    return noofyears;
}

From source file:MainClass.java

public static boolean isLeapYear(int year) {

    GregorianCalendar gcal = new GregorianCalendar();
    return gcal.isLeapYear(year);
}

From source file:Main.java

/**
 * /* w w  w.  j  a  v a2 s .  c  om*/
 * @return
 */
public static long getMillisGMT() {
    Calendar calendar = new GregorianCalendar();
    TimeZone mTimeZone = calendar.getTimeZone();
    int offset = mTimeZone.getOffset(System.currentTimeMillis());
    return System.currentTimeMillis() - offset;
}

From source file:Main.java

/**
 * /* w w  w .j av  a2s.  c o m*/
 * @return
 */
public static long getMillisGMT() {
    Calendar calendar = new GregorianCalendar();
    TimeZone mTimeZone = calendar.getTimeZone();
    int offset = mTimeZone.getRawOffset();
    return System.currentTimeMillis() - offset;
}

From source file:Main.java

public static Calendar getDateAwareCalendar() {
    Calendar calendar = new GregorianCalendar();

    // Check if the 1st of September is in two weeks. If so we need to download full timetable
    // for two weeks beginning from the 1st of September in advance.
    if (calendar.get(Calendar.MONTH) == Calendar.AUGUST && calendar.get(Calendar.DATE) >= 18) {
        calendar.set(Calendar.MONTH, Calendar.SEPTEMBER);
        calendar.set(Calendar.DATE, 1);
    }//from   w  w w  .ja  va  2  s  . c  o  m

    prepareCalendarNoSunday(calendar);
    return calendar;
}

From source file:Main.java

public static boolean isPastDate(String year, String month, String day) {
    try {//from   w  ww  . j  a v  a  2s. c  o  m
        GregorianCalendar cal = new GregorianCalendar();
        cal.setLenient(false);
        SimpleDateFormat fmDate = new SimpleDateFormat("yyyyMMdd");
        String today = fmDate.format(cal.getTime());
        cal.clear();
        cal.set(Integer.parseInt(year), Integer.parseInt(month) - 1, Integer.parseInt(day));
        String inputday = fmDate.format(cal.getTime());

        if (inputday.compareTo(today) < 0) {
            return true;
        } else {
            return false;
        }
    } catch (IllegalArgumentException e) {
        return false;
    }
}

From source file:Main.java

public static int compareDate(String aDate, String bDate) {

    String[] strDate;//from   w w  w .ja  va  2 s  .  co  m
    GregorianCalendar aCal = new GregorianCalendar();
    GregorianCalendar bCal = new GregorianCalendar();
    if (aDate.indexOf("/") != -1) {
        strDate = aDate.split("/");
        aCal.set(Integer.parseInt(strDate[0].trim()), Integer.parseInt(strDate[1].trim()) - 1,
                Integer.parseInt(strDate[2].trim()));
    } else if (aDate.indexOf("-") != -1) {
        strDate = aDate.split("-");
        aCal.set(Integer.parseInt(strDate[0].trim()), Integer.parseInt(strDate[1].trim()) - 1,
                Integer.parseInt(strDate[2].trim()));
    } else if (aDate.length() == 8) {
        aCal.set(Integer.parseInt(aDate.substring(0, 4)), Integer.parseInt(aDate.substring(4, 6)) - 1,
                Integer.parseInt(aDate.substring(6, 8)));
    } else if (aDate.length() == 10) {
        aCal.set(Integer.parseInt(aDate.substring(0, 4)), Integer.parseInt(aDate.substring(5, 7)) - 1,
                Integer.parseInt(aDate.substring(8, 10)));
    }

    if (bDate.indexOf("/") != -1) {
        strDate = bDate.split("/");
        bCal.set(Integer.parseInt(strDate[0].trim()), Integer.parseInt(strDate[1].trim()) - 1,
                Integer.parseInt(strDate[2].trim()));
    } else if (bDate.indexOf("-") != -1) {
        strDate = bDate.split("-");
        bCal.set(Integer.parseInt(strDate[0].trim()), Integer.parseInt(strDate[1].trim()) - 1,
                Integer.parseInt(strDate[2].trim()));
    } else if (bDate.length() == 8) {
        bCal.set(Integer.parseInt(bDate.substring(0, 4)), Integer.parseInt(bDate.substring(4, 6)) - 1,
                Integer.parseInt(bDate.substring(6, 8)));
    } else if (bDate.length() == 10) {
        bCal.set(Integer.parseInt(bDate.substring(0, 4)), Integer.parseInt(bDate.substring(5, 7)) - 1,
                Integer.parseInt(bDate.substring(8, 10)));
    }

    return aCal.compareTo(bCal);
}

From source file:Main.java

/**
 *
 * @return//from w  w w.  ja  v  a  2s.c o m
 */
public static String tomorrow() {
    GregorianCalendar gc = new GregorianCalendar();
    gc.setTime(new Date());
    gc.add(GregorianCalendar.DATE, 1);
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

    return sdf.format(gc.getTime());
}