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:MainClass.java

public static void main(String args[]) {
    GregorianCalendar gc = new GregorianCalendar();
    int year = gc.get(Calendar.YEAR);
    System.out.println(year);/*from   w w w  .java2 s  .co m*/
    System.out.println(gc.isLeapYear(year));
    System.out.println("Month = " + gc.get(Calendar.MONTH));
    System.out.println("Week of year = " + gc.get(Calendar.WEEK_OF_YEAR));
    System.out.println("Week of month = " + gc.get(Calendar.WEEK_OF_MONTH));
    System.out.println("Day of year = " + gc.get(Calendar.DAY_OF_YEAR));
    System.out.println("Day of week = " + gc.get(Calendar.DAY_OF_WEEK));
}

From source file:GregorianCalendarDemo.java

public static void main(String args[]) {
    String months[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
    int year;/*from   www  .java  2 s  . c o m*/

    GregorianCalendar gcalendar = new GregorianCalendar();

    System.out.print("Date: ");
    System.out.print(months[gcalendar.get(Calendar.MONTH)]);
    System.out.print(" " + gcalendar.get(Calendar.DATE) + " ");
    System.out.println(year = gcalendar.get(Calendar.YEAR));

    System.out.print("Time: ");
    System.out.print(gcalendar.get(Calendar.HOUR) + ":");
    System.out.print(gcalendar.get(Calendar.MINUTE) + ":");
    System.out.println(gcalendar.get(Calendar.SECOND));

    if (gcalendar.isLeapYear(year)) {
        System.out.println("The current year is a leap year");
    } else {
        System.out.println("The current year is not a leap year");
    }
}

From source file:MainClass.java

public static void main(String[] args) throws ParseException {
    SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yyyy");
    GregorianCalendar gc = new GregorianCalendar();
    java.util.Date d = sdf.parse("12/12/2003");
    gc.setTime(d);/*  w  ww .ja  v  a2 s  . c  o  m*/
    System.out.println("Input Date = " + sdf.format(d));
    int dayBefore = gc.get(Calendar.DAY_OF_YEAR);
    gc.roll(Calendar.DAY_OF_YEAR, -1);
    int dayAfter = gc.get(Calendar.DAY_OF_YEAR);
    if (dayAfter > dayBefore) {
        gc.roll(Calendar.YEAR, -1);
    }
    gc.get(Calendar.DATE);
    java.util.Date yesterday = gc.getTime();
    System.out.println("Yesterdays Date = " + sdf.format(yesterday));

}

From source file:MainClass.java

public static void main(String[] a) {
    Calendar calendar = new GregorianCalendar();
    calendar.setTime(new Date());

    System.out.println("ERA: " + calendar.get(Calendar.ERA));
    System.out.println("YEAR: " + calendar.get(Calendar.YEAR));
    System.out.println("MONTH: " + calendar.get(Calendar.MONTH));
    System.out.println("WEEK_OF_YEAR: " + calendar.get(Calendar.WEEK_OF_YEAR));
    System.out.println("WEEK_OF_MONTH: " + calendar.get(Calendar.WEEK_OF_MONTH));
    System.out.println("DATE: " + calendar.get(Calendar.DATE));
    System.out.println("DAY_OF_MONTH: " + calendar.get(Calendar.DAY_OF_MONTH));
    System.out.println("DAY_OF_WEEK: " + calendar.get(Calendar.DAY_OF_WEEK));
    System.out.println("DAY_OF_WEEK_IN_MONTH: " + calendar.get(Calendar.DAY_OF_WEEK_IN_MONTH));
    System.out.println("AM_PM: " + calendar.get(Calendar.AM_PM));
    System.out.println("MILLISECOND: " + calendar.get(Calendar.MILLISECOND));
    System.out.println("ZONE_OFFSET: " + (calendar.get(Calendar.ZONE_OFFSET) / (60 * 60 * 1000)));
    System.out.println("DST_OFFSET: " + (calendar.get(Calendar.DST_OFFSET) / (60 * 60 * 1000)));
}

From source file:Main.java

public static void main(String args[]) {
    int days = 1;
    int month = 1;
    int year = 2001;
    SimpleDateFormat sdf = new SimpleDateFormat("E dd-MM-yyyy G");
    StringBuffer buf = new StringBuffer();
    Calendar cal = new GregorianCalendar();
    cal.set(year, month - 1, days);/*from  www  . j a v a  2  s  . c  o  m*/
    sdf.format(cal.getTime(), buf, new FieldPosition(10));
    System.out.println(buf.toString());
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    Calendar calendar = new GregorianCalendar();
    calendar.set(Calendar.HOUR_OF_DAY, 13); // 1pm

    SpinnerDateModel dateModel = new SpinnerDateModel(calendar.getTime(), null, null, Calendar.HOUR_OF_DAY);
    JSpinner spinner = new JSpinner(dateModel);

    JFormattedTextField tf = ((JSpinner.DefaultEditor) spinner.getEditor()).getTextField();
    DefaultFormatterFactory factory = (DefaultFormatterFactory) tf.getFormatterFactory();
    DateFormatter formatter = (DateFormatter) factory.getDefaultFormatter();

    // Change the date format to only show the hours
    formatter.setFormat(new SimpleDateFormat("hh:00 a"));
    //formatter.setFormat(new SimpleDateFormat("HH:00 a"));
}

From source file:Main.java

public static void main(String[] argv) {

    Instant instantFromDate = new Date().toInstant();

    Instant instantFromCalendar = Calendar.getInstance().toInstant();
    System.out.println(instantFromCalendar);

    ZoneId zoneId = java.util.TimeZone.getDefault().toZoneId();
    System.out.println(zoneId);//from   w w  w . j a v a  2  s.co m

    ZonedDateTime zonedDateTimeFromGregorianCalendar = new GregorianCalendar().toZonedDateTime();

    System.out.println(zonedDateTimeFromGregorianCalendar);
}

From source file:com.pureinfo.srm.config.notice.TestTimer.java

public static void main(String[] args) throws ParseException {
    Calendar start = new GregorianCalendar();
    start.setTime(format.parse("18:40"));
    Calendar cal = new GregorianCalendar();
    start.set(Calendar.YEAR, cal.get(Calendar.YEAR));
    start.set(Calendar.MONTH, cal.get(Calendar.MONTH));
    start.set(Calendar.DAY_OF_MONTH, cal.get(Calendar.DAY_OF_MONTH));
    while (start.before(cal)) {
        start.setTimeInMillis(start.getTimeInMillis() + DateUtils.MILLIS_PER_MINUTE);
    }/*  w w w. j  a va2  s  .  c  om*/
    new Timer().scheduleAtFixedRate(new test1(), start.getTime(), DateUtils.MILLIS_PER_MINUTE);
}

From source file:DateComboBoxRenderer.java

public static void main(String[] str) {
    JComboBox combo = new JComboBox();
    GregorianCalendar calendar = new GregorianCalendar();
    combo.addItem(calendar.getTime());/*w w w  . j a v a  2  s  .co  m*/

    calendar.roll(GregorianCalendar.DAY_OF_MONTH, 1);
    combo.addItem(calendar.getTime());

    combo.setRenderer(new DateComboBoxRenderer());

    JFrame frame = new JFrame();

    JPanel panel = new JPanel();
    panel.add(new JLabel("Date Combo: "));
    panel.add(combo);

    frame.add(panel);
    frame.pack();
    frame.setVisible(true);
}

From source file:BasicTimer.java

public static void main(String[] args) throws Exception {
    int type = TYPE_REMAINING;
    BasicTimer timer = new BasicTimer(type);
    timer.setMax(10000);/*from   w ww . j a v a 2s  .  c o m*/
    GregorianCalendar calendar = new GregorianCalendar();
    while (true) {
        Thread.sleep(1000);
        if (type == TYPE_CLOCK) {
            calendar.setTimeInMillis(timer.getTime());
            System.out.println("Clock: " + calendar);
        } else if (type == TYPE_ELAPSED) {
            System.out.println("Elapsed: " + (timer.getTime() / 1000) + " seconds");
        } else if (type == TYPE_REMAINING) {
            System.out.println("Remaining: " + (timer.getTime() / 1000) + " seconds");
        }
    }
}