Example usage for java.util Calendar setTime

Introduction

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

Prototype

public final void setTime(Date date)

Source Link

Document

Sets this Calendar's time with the given Date.

Usage

From source file:Main.java

/**
 * Copy the year, month and day from a date to another
 * @param dateOrigin Date origin where to get the data
 * @param dateDestiny Date destiny where to set the data
 * @return Date with year month and day from dateOrigin and rest from dateDestiny
 *///from  w  w w.  j ava  2s .c  o m
public static Date copyYearMonthDay(Date dateOrigin, Date dateDestiny) {

    //check null values
    if (dateOrigin == null && dateDestiny == null) {
        return Calendar.getInstance().getTime();
    } else if (dateOrigin == null) {
        return dateDestiny;
    } else if (dateDestiny == null) {
        return dateOrigin;
    }

    //convert to calendars
    Calendar calOrigin = Calendar.getInstance();
    calOrigin.setTime(dateOrigin);
    Calendar calDestiny = Calendar.getInstance();
    calDestiny.setTime(dateDestiny);

    //return the time of destiny
    return copyYearMonthDay(calOrigin, calDestiny).getTime();
}

From source file:Main.java

public static Date getFirstDayOfMonth(Date date) {
    if (date == null) {
        return null;
    }/* w  w w .  ja v a 2  s  .c  o m*/
    Calendar calendar = Calendar.getInstance(Locale.getDefault());
    calendar.setTime(date);
    calendar.set(Calendar.DAY_OF_MONTH, 1);
    return calendar.getTime();
}

From source file:Main.java

public static boolean sameDate(@NonNull Date date1, @NonNull Date date2) {
    Calendar cal1 = Calendar.getInstance();
    Calendar cal2 = Calendar.getInstance();
    cal1.setTime(date1);
    cal2.setTime(date2);//  www  .ja v a 2  s.  co  m
    return cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR)
            && cal1.get(Calendar.DAY_OF_YEAR) == cal2.get(Calendar.DAY_OF_YEAR);
}

From source file:Main.java

/**
 * @param startDateTime//from w w w  .j a  v  a 2 s . co m
 * @param endDateTime
 * @return the difference in days between the second timestamp and first
 */
public static double getDifferenceInDays(Timestamp startDateTime, Timestamp endDateTime) {
    int difference = 0;

    Calendar startCalendar = Calendar.getInstance();
    startCalendar.setTime(startDateTime);

    Calendar endCalendar = Calendar.getInstance();
    endCalendar.setTime(endDateTime);

    // First, get difference in whole days
    Calendar startCompare = Calendar.getInstance();
    startCompare.setTime(startDateTime);
    startCompare.set(Calendar.HOUR_OF_DAY, 0);
    startCompare.set(Calendar.MINUTE, 0);
    startCompare.set(Calendar.SECOND, 0);
    startCompare.set(Calendar.MILLISECOND, 0);

    Calendar endCompare = Calendar.getInstance();
    endCompare.setTime(endDateTime);
    endCompare.set(Calendar.HOUR_OF_DAY, 0);
    endCompare.set(Calendar.MINUTE, 0);
    endCompare.set(Calendar.SECOND, 0);
    endCompare.set(Calendar.MILLISECOND, 0);

    return (endCompare.getTimeInMillis() - startCompare.getTimeInMillis()) / (24 * 60 * 60 * 1000);
}

From source file:Main.java

/**
 * Try to parse input with SimpleDateFormat
 *
 * @param input input.//from w  ww . j  ava 2 s .c o  m
 * @param format      SimpleDateFormat
 * @param setYear1700 When true the age will be not displayed in brackets
 * @param locale locale.
 * @return Date object if successful, otherwise null
 */
private static Date parseStringWithSimpleDateFormat(String input, String format, boolean setYear1700,
        Locale locale) {
    SimpleDateFormat dateFormat = new SimpleDateFormat(format, locale);
    dateFormat.setTimeZone(TimeZone.getDefault());

    try {
        Date parsedDate = dateFormat.parse(input);

        /*
         * Because no year is defined in address book, set year to 1700
         *
         * When year < 1800, the age will be not displayed in brackets
         */
        if (setYear1700) {
            Calendar cal = Calendar.getInstance();
            cal.setTime(parsedDate);
            cal.set(Calendar.YEAR, 1700);
        }

        return parsedDate;
    } catch (ParseException ignored) {
        return null;
    }
}

From source file:Main.java

/**
 * Adds to a date returning a new object.
 * The original date object is unchanged.
 *
 * @param date  the date, not null//  w  w w  . j  a v a  2 s .c  o  m
 * @param calendarField  the calendar field to add to
 * @param amount  the amount to add, may be negative
 * @return the new date object with the amount added
 * @throws IllegalArgumentException if the date is null
 */
private static Date add(Date date, int calendarField, int amount) {
    if (date == null) {
        throw new IllegalArgumentException("The date must not be null");
    }
    Calendar c = Calendar.getInstance();
    c.setTime(date);
    c.add(calendarField, amount);
    return c.getTime();
}

From source file:Main.java

public static Calendar string2Calendar(String date) {
    date = getDateNoWeek(date);//from   w  w w  .  j  a  v  a 2  s.  co m
    final SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
    Date d;
    try {
        d = format.parse(date);
    } catch (ParseException e) {
        d = new Date();
    }
    final Calendar mCalendar = (Calendar) Calendar.getInstance().clone();
    mCalendar.setTime(d);
    return mCalendar;
}

From source file:AIR.Common.Utilities.Dates.java

/**
 * @param date//from w w  w.j  ava2  s .c o m
 * @return returns the midnight time for this date e.g. if date is
 *         "10/11/2012 12:10 pm" then this will return "10/11/2012 00:00 am"
 */
public static Date getStartOfDayDate(Date date) {
    Calendar calendarInstance = Calendar.getInstance();
    calendarInstance.setTime(date);
    calendarInstance.set(Calendar.HOUR_OF_DAY, 0);
    calendarInstance.set(Calendar.MINUTE, 0);
    calendarInstance.set(Calendar.SECOND, 0);
    return calendarInstance.getTime();
}

From source file:AIR.Common.Utilities.Dates.java

/**
 * @param date//from   ww w  .j  a  va2  s .  co m
 * @return returns the midnight time for before date ends e.g. if date is
 *         "10/11/2012 12:10 pm" then this will return "10/11/2012 11:59 pm"
 */
public static Date getEndOfDayDate(Date date) {
    Calendar calendarInstance = Calendar.getInstance();
    calendarInstance.setTime(date);
    calendarInstance.set(Calendar.HOUR_OF_DAY, 23);
    calendarInstance.set(Calendar.MINUTE, 59);
    calendarInstance.set(Calendar.SECOND, 0);
    return calendarInstance.getTime();
}

From source file:Main.java

public static Date getDate(String t, String pattern) {
    SimpleDateFormat dateFormat = new SimpleDateFormat(pattern, Locale.getDefault());
    try {//  w  w  w .  j a  v  a  2  s  . c o  m
        Date date = dateFormat.parse(t);
        Calendar calendar = Calendar.getInstance();
        calendar.clear();
        calendar.setTime(date);
        return date;
    } catch (ParseException e) {
        return null;
    }
}