DateUtils (jide-oss 3.7.14 API)

java.lang.Object
- com.jidesoft.utils.DateUtils

```
public class DateUtils
extends java.lang.Object
```
DateUtils contains many useful methods related to Date and Calendar.

Constructor Summary

Constructors
Constructor and Description

DateUtils()

Constructors
Constructor and Description
`DateUtils()`

Method Summary

All Methods Static Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`static java.util.Calendar`	`adjustDate(java.util.Calendar calendar, int differenceInDay)` Adjusts the Calendar to several days before or after the current date.
`static boolean`	`isAtMonth(java.util.Calendar cal, int month)` Checks if the calendar object is in the specified month, regardless of the year.
`static boolean`	`isAtQuarter(java.util.Calendar cal, int quarter)` Checks if the calendar object is in the specified quarter, regardless of the year.
`static boolean`	`isLastMonth(java.util.Calendar cal)` Checks if the calendar object is last month.
`static boolean`	`isLastQuarter(java.util.Calendar cal)` Checks if the calendar object is last quarter.
`static boolean`	`isLastWeek(java.util.Calendar cal)` Checks if the calendar object is last week.
`static boolean`	`isLastYear(java.util.Calendar cal)` Checks if the calendar object is last year.
`static boolean`	`isNextMonth(java.util.Calendar cal)` Checks if the calendar object is next month.
`static boolean`	`isNextQuarter(java.util.Calendar cal)` Checks if the calendar object is next quarter.
`static boolean`	`isNextWeek(java.util.Calendar cal)` Checks if the calendar object is next week.
`static boolean`	`isNextYear(java.util.Calendar cal)` Checks if the calendar object is next year.
`static boolean`	`isThisMonth(java.util.Calendar cal)` Checks if the calendar object is same month as today.
`static boolean`	`isThisQuarter(java.util.Calendar cal)` Checks if the calendar object is same quarter as today.
`static boolean`	`isThisWeek(java.util.Calendar cal)` Checks if the calendar object is same week as today.
`static boolean`	`isThisYear(java.util.Calendar cal)` Checks if the calendar object is same year as today.
`static boolean`	`isToday(java.util.Calendar cal)` Checks if the calendar object is same date as today.
`static boolean`	`isTomorrow(java.util.Calendar cal)` Checks if the calendar object is same date as tomorrow.
`static boolean`	`isYesterday(java.util.Calendar cal)` Checks if the calendar object is same date as yesterday.
`static java.util.Date`	`max(java.util.List<java.util.Date> dates)` Deprecated. replaced by `maxDates(java.util.List)` to comply with the new compilation regulation. We have to delete the max(List) in releases earlier than 2.9.4 due to the same reason.
`static java.util.Calendar`	`maxCalendars(java.util.List<java.util.Calendar> calendars)` Returns the maximum Calendar in the Calendar list.
`static java.util.Date`	`maxDates(java.util.List<java.util.Date> dates)` Returns the maximum Date in the Date list.
`static java.util.Date`	`min(java.util.List<java.util.Date> dates)` Deprecated. replaced by `minDates(java.util.List)` to comply with the new compilation regulation. We have to delete the min(List) in releases earlier than 2.9.4 due to the same reason.
`static java.util.Calendar`	`minCalendars(java.util.List<java.util.Calendar> calendars)` Returns the minimum Calendar in the Calendar list.
`static java.util.Date`	`minDates(java.util.List<java.util.Date> dates)` Returns the minimum Date in the Date list.
`static TimeRange`	`rangeCalendars(java.util.List<java.util.Calendar> calendars)` Returns the range of Calendars in the Calendar list.
`static TimeRange`	`rangeDates(java.util.List<java.util.Date> dates)` Returns the range of date in the Calendar list.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - DateUtils
```
public DateUtils()
```
- Method Detail
  - isToday
```
public static boolean isToday(java.util.Calendar cal)
```
    Checks if the calendar object is same date as today.
    
    Parameters:
    
    cal - the calendar object
    
    Returns:
    
    true if the calendar object is the same date as today.
  - isThisWeek
```
public static boolean isThisWeek(java.util.Calendar cal)
```
    Checks if the calendar object is same week as today.
    
    Parameters:
    
    cal - the calendar object
    
    Returns:
    
    true if the calendar object is the same week as today.
  - isThisMonth
```
public static boolean isThisMonth(java.util.Calendar cal)
```
    Checks if the calendar object is same month as today.
    
    Parameters:
    
    cal - the calendar object
    
    Returns:
    
    true if the calendar object is the same month as today.
  - isThisQuarter
```
public static boolean isThisQuarter(java.util.Calendar cal)
```
    Checks if the calendar object is same quarter as today.
    
    Parameters:
    
    cal - the calendar object
    
    Returns:
    
    true if the calendar object is the same quarter as today.
  - isThisYear
```
public static boolean isThisYear(java.util.Calendar cal)
```
    Checks if the calendar object is same year as today.
    
    Parameters:
    
    cal - the calendar object
    
    Returns:
    
    true if the calendar object is the same year as today.
  - isYesterday
```
public static boolean isYesterday(java.util.Calendar cal)
```
    Checks if the calendar object is same date as yesterday.
    
    Parameters:
    
    cal - the calendar object
    
    Returns:
    
    true if the calendar object is the same date as yesterday.
  - isLastWeek
```
public static boolean isLastWeek(java.util.Calendar cal)
```
    Checks if the calendar object is last week.
    
    Parameters:
    
    cal - the calendar object
    
    Returns:
    
    true if the calendar object is last week.
  - isLastMonth
```
public static boolean isLastMonth(java.util.Calendar cal)
```
    Checks if the calendar object is last month.
    
    Parameters:
    
    cal - the calendar object
    
    Returns:
    
    true if the calendar object is last month.
  - isLastQuarter
```
public static boolean isLastQuarter(java.util.Calendar cal)
```
    Checks if the calendar object is last quarter.
    
    Parameters:
    
    cal - the calendar object
    
    Returns:
    
    true if the calendar object is last quarter.
  - isLastYear
```
public static boolean isLastYear(java.util.Calendar cal)
```
    Checks if the calendar object is last year.
    
    Parameters:
    
    cal - the calendar object
    
    Returns:
    
    true if the calendar object is last year.
  - isTomorrow
```
public static boolean isTomorrow(java.util.Calendar cal)
```
    Checks if the calendar object is same date as tomorrow.
    
    Parameters:
    
    cal - the calendar object
    
    Returns:
    
    true if the calendar object is the same date as tomorrow.
  - isNextWeek
```
public static boolean isNextWeek(java.util.Calendar cal)
```
    Checks if the calendar object is next week.
    
    Parameters:
    
    cal - the calendar object
    
    Returns:
    
    true if the calendar object is next week.
  - isNextMonth
```
public static boolean isNextMonth(java.util.Calendar cal)
```
    Checks if the calendar object is next month.
    
    Parameters:
    
    cal - the calendar object
    
    Returns:
    
    true if the calendar object is next month.
  - isNextQuarter
```
public static boolean isNextQuarter(java.util.Calendar cal)
```
    Checks if the calendar object is next quarter.
    
    Parameters:
    
    cal - the calendar object
    
    Returns:
    
    true if the calendar object is next quarter.
  - isNextYear
```
public static boolean isNextYear(java.util.Calendar cal)
```
    Checks if the calendar object is next year.
    
    Parameters:
    
    cal - the calendar object
    
    Returns:
    
    true if the calendar object is next year.
  - isAtMonth
```
public static boolean isAtMonth(java.util.Calendar cal,
                                int month)
```
    Checks if the calendar object is in the specified month, regardless of the year.
    
    Parameters:
    
    cal - the calendar object.
    
    month - the month, starting from 0 for January. You can use the value defined in Calendar such as Calendar.JANUARY, Calendar.FEBRUARY, etc.
    
    Returns:
    
    true if the calendar object is the specified month.
  - isAtQuarter
```
public static boolean isAtQuarter(java.util.Calendar cal,
                                  int quarter)
```
    Checks if the calendar object is in the specified quarter, regardless of the year.
    
    Parameters:
    
    cal - the calendar object.
    
    quarter - the quarter, starting from 1 for the first quarter (including January, February, and March).
    
    Returns:
    
    true if the calendar object is the specified quarter.
  - adjustDate
```
public static java.util.Calendar adjustDate(java.util.Calendar calendar,
                                            int differenceInDay)
```
    Adjusts the Calendar to several days before or after the current date.
    
    Parameters:
    
    calendar - the Calendar object to be adjusted.
    
    differenceInDay - the difference in days. It accepts both position and negative number.
    
    Returns:
    
    the calendar after the adjustment. It should always be the same instance as the calendar parameter.
  - min
```
@Deprecated
public static java.util.Date min(java.util.List<java.util.Date> dates)
```
    Deprecated. replaced by minDates(java.util.List) to comply with the new compilation regulation. We have to delete the min(List) in releases earlier than 2.9.4 due to the same reason.
    
    Returns the minimum Date in the Date list.
    
    Parameters:
    
    dates - the list of Date to calculate the minimum.
    
    Returns:
    
    the minimum date in the Date list.
  - max
```
@Deprecated
public static java.util.Date max(java.util.List<java.util.Date> dates)
```
    Deprecated. replaced by maxDates(java.util.List) to comply with the new compilation regulation. We have to delete the max(List) in releases earlier than 2.9.4 due to the same reason.
    
    Returns the maximum Date in the Date list.
    
    Parameters:
    
    dates - the list of Date to calculate the maximum.
    
    Returns:
    
    the maximum date in the Date list.
  - minDates
```
public static java.util.Date minDates(java.util.List<java.util.Date> dates)
```
    Returns the minimum Date in the Date list.
    
    Parameters:
    
    dates - the list of Date to calculate the minimum.
    
    Returns:
    
    the minimum date in the Date list.
  - maxDates
```
public static java.util.Date maxDates(java.util.List<java.util.Date> dates)
```
    Returns the maximum Date in the Date list.
    
    Parameters:
    
    dates - the list of Date to calculate the maximum.
    
    Returns:
    
    the maximum date in the Date list.
  - rangeDates
```
public static TimeRange rangeDates(java.util.List<java.util.Date> dates)
```
    Returns the range of date in the Calendar list.
    
    Parameters:
    
    dates - the list of Dates to calculate the maximum.
    
    Returns:
    
    the range date in the Calendar list.
  - minCalendars
```
public static java.util.Calendar minCalendars(java.util.List<java.util.Calendar> calendars)
```
    Returns the minimum Calendar in the Calendar list.
    
    Parameters:
    
    calendars - the list of Calendar to calculate the minimum.
    
    Returns:
    
    the minimum calendar in the Calendar list.
  - maxCalendars
```
public static java.util.Calendar maxCalendars(java.util.List<java.util.Calendar> calendars)
```
    Returns the maximum Calendar in the Calendar list.
    
    Parameters:
    
    calendars - the list of Calendar to calculate the maximum.
    
    Returns:
    
    the maximum calendar in the Calendar list.
  - rangeCalendars
```
public static TimeRange rangeCalendars(java.util.List<java.util.Calendar> calendars)
```
    Returns the range of Calendars in the Calendar list.
    
    Parameters:
    
    calendars - the list of Calendar to calculate the maximum.
    
    Returns:
    
    the range of calendars in the Calendar list.

Class DateUtils

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

DateUtils

Method Detail

isToday

isThisWeek

isThisMonth

isThisQuarter

isThisYear

isYesterday

isLastWeek

isLastMonth

isLastQuarter

isLastYear

isTomorrow

isNextWeek

isNextMonth

isNextQuarter

isNextYear

isAtMonth

isAtQuarter

adjustDate

min

max

minDates

maxDates

rangeDates

minCalendars

maxCalendars

rangeCalendars