com.communote.common.util

Class DateHelper

java.lang.Object

com.communote.common.util.DateHelper

public class DateHelper
extends Object

Date helper

Author:

Communote GmbH - http://www.communote.com/

Field Summary

Fields

Modifier and Type	Field and Description
static long	DAYS a day in milli seconds
static int	DAYS_IN_SEC a day in seconds
static long	HOURS an hour in milli seconds
static int	HOURS_IN_SEC a hour in seconds
static long	MILLI_SECONDS a milli seconds
static long	MINUTES a minute in milli seconds
static int	MINUTES_IN_SEC a minutes in seconds
static long	SECONDS a second in milli seconds
static int	SECONDS_IN_SEC a second in seconds

Method Summary

Modifier and Type	Method and Description
static boolean	isTheSameDay(Calendar dayOne, Calendar dayTwo) Check if the calendars are referring to the same day
static boolean	isTheSameDay(Date dayOne, Date dayTwo) Check if the dates are referring to the same day
static boolean	isTheSameDay(Date dayOne, Date dayTwo, TimeZone userTimeZone) Check if the dates are referring to the same day and add set the timezone
static boolean	isToday(Date day) Check if the dates are referring to the same day
static long	nowBefore(long time) Use as nowBefore(14*DateHelper.DAYS)
static long	nowBeforeTrimToMidnight(long time) Subtract the time from now and reset the time of the given day
static long	nowBeforeXMonths(int x) Use as nowBeforeXMonths(1) to get the time of today before one month

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

MILLI_SECONDS

public static final long MILLI_SECONDS

a milli seconds

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Constant Field Values

SECONDS

public static final long SECONDS

a second in milli seconds

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Constant Field Values

SECONDS_IN_SEC

public static final int SECONDS_IN_SEC

a second in seconds

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Constant Field Values

MINUTES

public static final long MINUTES

a minute in milli seconds

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Constant Field Values

MINUTES_IN_SEC

public static final int MINUTES_IN_SEC

a minutes in seconds

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Constant Field Values

HOURS

public static final long HOURS

an hour in milli seconds

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Constant Field Values

HOURS_IN_SEC

public static final int HOURS_IN_SEC

a hour in seconds

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Constant Field Values

DAYS

public static final long DAYS

a day in milli seconds

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Constant Field Values

DAYS_IN_SEC

public static final int DAYS_IN_SEC

a day in seconds

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Constant Field Values

Method Detail

isTheSameDay

public static boolean isTheSameDay(Calendar dayOne,
                                   Calendar dayTwo)

Check if the calendars are referring to the same day

Parameters:

dayOne - the day one

dayTwo - the day two

Returns:

true if the days are equal

isTheSameDay

public static boolean isTheSameDay(Date dayOne,
                                   Date dayTwo)

Check if the dates are referring to the same day

Parameters:

dayOne - the day one

dayTwo - the day two

Returns:

true if the days are equal

isTheSameDay

public static boolean isTheSameDay(Date dayOne,
                                   Date dayTwo,
                                   TimeZone userTimeZone)

Check if the dates are referring to the same day and add set the timezone

Parameters:

dayOne - the day one with respect to the timezone

dayTwo - the day two with respect to the timezone

userTimeZone - for timezone specific comparison; can be null

Returns:

true if the days are equal

isToday

public static boolean isToday(Date day)

Check if the dates are referring to the same day

Parameters:

day - the day one

Returns:

true if the days are equal

nowBefore

public static long nowBefore(long time)

Use as nowBefore(14*DateHelper.DAYS)

Parameters:

time - the time to subtract from now

Returns:

now before the given time

nowBeforeTrimToMidnight

public static long nowBeforeTrimToMidnight(long time)

Subtract the time from now and reset the time of the given day

Parameters:

time - the time to subtract from now

Returns:

the date in milliseconds from today minus the date given but set to midnight of the same day

nowBeforeXMonths

public static long nowBeforeXMonths(int x)

Use as nowBeforeXMonths(1) to get the time of today before one month

Parameters:

x - the number of months to substract from today

Returns:

now before x months