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

public static String getCurrMonthAfter(int monthDiff, String format) {
    SimpleDateFormat ft = new SimpleDateFormat(format);
    Calendar c = new GregorianCalendar();
    c.add(Calendar.MONTH, monthDiff);
    return ft.format(c.getTime());
}

From source file:Main.java

private static String getDayOfWeek(String format, int calendarField) {
    String strDate = null;/*from w w w  . ja v a2  s.  c  o  m*/
    try {
        Calendar c = new GregorianCalendar();
        SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat(format);
        int week = c.get(Calendar.DAY_OF_WEEK);
        if (week == calendarField) {
            strDate = mSimpleDateFormat.format(c.getTime());
        } else {
            int offectDay = calendarField - week;
            if (calendarField == Calendar.SUNDAY) {
                offectDay = 7 - Math.abs(offectDay);
            }
            c.add(Calendar.DATE, offectDay);
            strDate = mSimpleDateFormat.format(c.getTime());
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return strDate;
}

From source file:Main.java

public static String getStringByDateFormat(String strDate, String format) {
    String mDateTime = null;//  w ww  . j a  va 2  s .  c  o m
    try {
        Calendar c = new GregorianCalendar();
        SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat("MMM dd,yyyy kk:mm:ss aa", Locale.ENGLISH);
        c.setTime(mSimpleDateFormat.parse(strDate));
        SimpleDateFormat mSimpleDateFormat2 = new SimpleDateFormat(format);
        mDateTime = mSimpleDateFormat2.format(c.getTime());
    } catch (Exception e) {
        e.printStackTrace();
    }
    return mDateTime;
}

From source file:Main.java

/**
 * Reset the time of a date/*from   ww w.  j a va2  s.  com*/
 * @param date the date with time to reset
 * @return the 0 time date.
 */
public static Date zeroTimeDate(Date date) {
    final GregorianCalendar gregorianCalendar = new GregorianCalendar();
    gregorianCalendar.setTime(date);
    gregorianCalendar.set(Calendar.HOUR_OF_DAY, 0);
    gregorianCalendar.set(Calendar.MINUTE, 0);
    gregorianCalendar.set(Calendar.SECOND, 0);
    gregorianCalendar.set(Calendar.MILLISECOND, 0);
    return gregorianCalendar.getTime();
}

From source file:Main.java

public static String getCurrentDate(String format) {
    String curDateTime = null;//from  ww  w  .j  a  v a  2  s. c om
    try {
        SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat(format);
        Calendar c = new GregorianCalendar();
        curDateTime = mSimpleDateFormat.format(c.getTime());
    } catch (Exception e) {
        e.printStackTrace();
    }
    return curDateTime;

}

From source file:Main.java

public static String getCurrentDateByOffset(String format, int calendarField, int offset) {
    String mDateTime = null;//from  ww w  .  j a  v a  2  s .  co m
    try {
        SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat(format);
        Calendar c = new GregorianCalendar();
        c.add(calendarField, offset);
        mDateTime = mSimpleDateFormat.format(c.getTime());
    } catch (Exception e) {
        e.printStackTrace();
    }
    return mDateTime;

}

From source file:Main.java

public static String getStringByOffset(String strDate, String format, int calendarField, int offset) {
    String mDateTime = null;//from  w  ww .  j  ava  2s  .  co  m
    try {
        Calendar c = new GregorianCalendar();
        SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat(format);
        c.setTime(mSimpleDateFormat.parse(strDate));
        c.add(calendarField, offset);
        mDateTime = mSimpleDateFormat.format(c.getTime());
    } catch (ParseException e) {
        e.printStackTrace();
    }
    return mDateTime;
}

From source file:Main.java

static Calendar toNextWholeMinute(Calendar d) {
    Calendar c = new GregorianCalendar();
    c.setTime(d.getTime());/*  w w  w  . j  av a2  s  .c  o m*/
    c.add(Calendar.MINUTE, 1);
    c.set(Calendar.SECOND, 0);
    return c;
}

From source file:Main.java

public static String getStringByOffset(Date date, String format, int calendarField, int offset) {
    String strDate = null;/*  ww  w  .j  av  a2s  . co m*/
    try {
        Calendar c = new GregorianCalendar();
        SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat(format, Locale.CHINA);
        c.setTime(date);
        c.add(calendarField, offset);
        strDate = mSimpleDateFormat.format(c.getTime());
    } catch (Exception e) {
        e.printStackTrace();
    }
    return strDate;
}

From source file:Main.java

public static Date getDateDayBefore(Date originalDate, int days) {
    Calendar cal = new GregorianCalendar();
    cal.setTime(originalDate);//  www.j  a  v a 2  s  .  co m
    cal.add(Calendar.DAY_OF_MONTH, days * -1);
    return cal.getTime();
}