DateUtils (SwingX 1.6.5-1 API)

java.lang.Object
- org.jdesktop.swingx.calendar.DateUtils

```
public class DateUtils
extends Object
```
Utility methods for Date manipulation.
This utility class is replaced by CalendarUtils because day related manipulation are meaningfull relative to a Calendar only. Always doing so against the default calendar instance isn't enough. PENDING JW: move the missing ops. Volunteers, please! Once done, this will be deprecated.

Version:

$Revision$

Author:

Scott Violet

Constructor Summary

Constructors
Constructor and Description

DateUtils()

Constructors
Constructor and Description
`DateUtils()`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static long`	`addDays(long time, int amount)` Adds `amount` days to `time` and returns the resulting time.
`static Date`	`endOfDay(Date date)` Returns the last millisecond of the specified date.
`static long`	`endOfDayInMillis(long date)` Returns the last millisecond of the specified date.
`static int`	`getDayOfWeek(long date)` Returns the day of the week.
`static int`	`getDaysDiff(long t1, long t2)` Returns the number of days difference between `t1` and `t2`.
`static int`	`getDaysDiff(long t1, long t2, boolean checkOverflow)` Returns the number of days difference between `t1` and `t2`.
`static long`	`getEndOfMonth(long date)` Returns the date corresponding to the end of the month.
`static long`	`getNextDay(long date, int startOfWeek)` Returns the first day after `date` that has the day of week matching `startOfWeek`.
`static long`	`getNextMonth(long date)` Returns the next month.
`static long`	`getPreviousDay(long date, int startOfWeek)` Returns the first day before `date` that has the day of week matching `startOfWeek`.
`static long`	`getPreviousMonth(long date)` Returns the previous month.
`static long`	`getStartOfMonth(long date)` Returns the date corresponding to the start of the month.
`static boolean`	`isFirstOfMonth(long date)` Check, whether the date passed in is the first day of the month.
`static boolean`	`isFirstOfYear(long date)` Check, whether the date passed in is the first day of the year.
`static Date`	`nextDay(Date date)` Returns the day after `date`.
`static long`	`nextDay(long date)` Returns the day after `date`.
`static long`	`nextWeek(long date)` Returns the week after `date`.
`static long`	`previousDay(long date)` Returns the day before `date`.
`static long`	`previousWeek(long date)` Returns the week before `date`.
`static Date`	`startOfDay(Date date)` Returns a new Date with the hours, milliseconds, seconds and minutes set to 0.
`static long`	`startOfDayInMillis(long date)` Returns day in millis with the hours, milliseconds, seconds and minutes set to 0.

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
  - endOfDay
```
public static Date endOfDay(Date date)
```
    Returns the last millisecond of the specified date.
    
    Parameters:
    
    date - Date to calculate end of day from
    
    Returns:
    
    Last millisecond of date
  - startOfDay
```
public static Date startOfDay(Date date)
```
    Returns a new Date with the hours, milliseconds, seconds and minutes set to 0.
    
    Parameters:
    
    date - Date used in calculating start of day
    
    Returns:
    
    Start of date
  - startOfDayInMillis
```
public static long startOfDayInMillis(long date)
```
    Returns day in millis with the hours, milliseconds, seconds and minutes set to 0.
    
    Parameters:
    
    date - long used in calculating start of day
    
    Returns:
    
    Start of date
  - endOfDayInMillis
```
public static long endOfDayInMillis(long date)
```
    Returns the last millisecond of the specified date.
    
    Parameters:
    
    date - long to calculate end of day from
    
    Returns:
    
    Last millisecond of date
  - nextDay
```
public static Date nextDay(Date date)
```
    Returns the day after date.
    
    Parameters:
    
    date - Date used in calculating next day
    
    Returns:
    
    Day after date.
  - addDays
```
public static long addDays(long time,
                           int amount)
```
    Adds amount days to time and returns the resulting time.
    
    Parameters:
    
    time - Base time
    
    amount - Amount of increment.
    
    Returns:
    
    the time + amount days
  - nextDay
```
public static long nextDay(long date)
```
    Returns the day after date.
    
    Parameters:
    
    date - Date used in calculating next day
    
    Returns:
    
    Day after date.
  - nextWeek
```
public static long nextWeek(long date)
```
    Returns the week after date.
    
    Parameters:
    
    date - Date used in calculating next week
    
    Returns:
    
    week after date.
  - getDaysDiff
```
public static int getDaysDiff(long t1,
                              long t2,
                              boolean checkOverflow)
```
    Returns the number of days difference between t1 and t2.
    
    Parameters:
    
    t1 - Time 1
    
    t2 - Time 2
    
    checkOverflow - indicates whether to check for overflow
    
    Returns:
    
    Number of days between start and end
  - getDaysDiff
```
public static int getDaysDiff(long t1,
                              long t2)
```
    Returns the number of days difference between t1 and t2.
    
    Parameters:
    
    t1 - Time 1
    
    t2 - Time 2
    
    Returns:
    
    Number of days between start and end
  - isFirstOfYear
```
public static boolean isFirstOfYear(long date)
```
    Check, whether the date passed in is the first day of the year.
    
    Parameters:
    
    date - date to check in millis
    
    Returns:
    
    true if date corresponds to the first day of a year
    
    See Also:
    
    Date.getTime()
  - isFirstOfMonth
```
public static boolean isFirstOfMonth(long date)
```
    Check, whether the date passed in is the first day of the month.
    
    Parameters:
    
    date - date to check in millis
    
    Returns:
    
    true if date corresponds to the first day of a month
    
    See Also:
    
    Date.getTime()
  - previousDay
```
public static long previousDay(long date)
```
    Returns the day before date.
    
    Parameters:
    
    date - Date used in calculating previous day
    
    Returns:
    
    Day before date.
  - previousWeek
```
public static long previousWeek(long date)
```
    Returns the week before date.
    
    Parameters:
    
    date - Date used in calculating previous week
    
    Returns:
    
    week before date.
  - getPreviousDay
```
public static long getPreviousDay(long date,
                                  int startOfWeek)
```
    Returns the first day before date that has the day of week matching startOfWeek. For example, if you want to find the previous monday relative to date you would call getPreviousDay(date, Calendar.MONDAY).
    
    Parameters:
    
    date - Base date
    
    startOfWeek - Calendar constant correspoding to start of week.
    
    Returns:
    
    start of week, return value will have 0 hours, 0 minutes, 0 seconds and 0 ms.
  - getNextDay
```
public static long getNextDay(long date,
                              int startOfWeek)
```
    Returns the first day after date that has the day of week matching startOfWeek. For example, if you want to find the next monday relative to date you would call getPreviousDay(date, Calendar.MONDAY).
    
    Parameters:
    
    date - Base date
    
    startOfWeek - Calendar constant correspoding to start of week.
    
    Returns:
    
    start of week, return value will have 0 hours, 0 minutes, 0 seconds and 0 ms.
  - getPreviousMonth
```
public static long getPreviousMonth(long date)
```
    Returns the previous month.
    
    Parameters:
    
    date - Base date
    
    Returns:
    
    previous month
  - getNextMonth
```
public static long getNextMonth(long date)
```
    Returns the next month.
    
    Parameters:
    
    date - Base date
    
    Returns:
    
    next month
  - getStartOfMonth
```
public static long getStartOfMonth(long date)
```
    Returns the date corresponding to the start of the month.
    
    Parameters:
    
    date - Base date
    
    Returns:
    
    Start of month.
  - getEndOfMonth
```
public static long getEndOfMonth(long date)
```
    Returns the date corresponding to the end of the month.
    
    Parameters:
    
    date - Base date
    
    Returns:
    
    End of month.
  - getDayOfWeek
```
public static int getDayOfWeek(long date)
```
    Returns the day of the week.
    
    Parameters:
    
    date - date
    
    Returns:
    
    day of week.

Class DateUtils

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

DateUtils

Method Detail

endOfDay

startOfDay

startOfDayInMillis

endOfDayInMillis

nextDay

addDays

nextDay

nextWeek

getDaysDiff

getDaysDiff

isFirstOfYear

isFirstOfMonth

previousDay

previousWeek

getPreviousDay

getNextDay

getPreviousMonth

getNextMonth

getStartOfMonth

getEndOfMonth

getDayOfWeek