org.assertj.core.util
Class Dates

java.lang.Object
  org.assertj.core.util.Dates

public class Dates
extends Object

Utility methods related to dates.

Author:

Joel Costigliola, Mikhail Mazursky

Constructor Summary

Dates()

Method Summary

static int	dayOfMonthOf(Date date) Dates Extracts the day of month of the given Date.
static int	dayOfWeekOf(Date date) Extracts the day of week of the given Date, returned value follows Calendar.DAY_OF_WEEK .
static String	formatAsDatetime(Calendar calendar) Formats the date of the given calendar using the ISO 8601 date-time format (yyyy-MM-dd'T'HH:mm:ss). Method is thread safe.
static String	formatAsDatetime(Date date) Formats the given date using the ISO 8601 date-time format (yyyy-MM-dd'T'HH:mm:ss). Method in synchronized because SimpleDateFormat is not thread safe (sigh).
static String	formatAsDatetimeWithMs(Date date) Formats the given date using the ISO 8601 date-time format with millisecond (yyyy-MM-dd'T'HH:mm:ss:SSS). Method in synchronized because SimpleDateFormat is not thread safe (sigh).
static String	formatTimeDifference(Date date1, Date date2) Utility method to display a human readable time difference.
static int	hourOfDayOf(Date date) Extracts the hour of day if the given Date (24-hour clock).
static int	millisecondOf(Date date) Extracts the millisecond of the given Date.
static int	minuteOf(Date date) Dates Extracts the minute of the given Date.
static int	monthOf(Date date) Dates Extracts the month of the given Date starting at 1 (January=1, February=2, ...).
static DateFormat	newIsoDateFormat() ISO 8601 date format (yyyy-MM-dd), example : 2003-04-23
static DateFormat	newIsoDateTimeFormat() ISO 8601 date-time format (yyyy-MM-dd'T'HH:mm:ss), example : 2003-04-26T13:01:02
static DateFormat	newIsoDateTimeWithMsFormat() ISO 8601 date-time format with millisecond (yyyy-MM-dd'T'HH:mm:ss.SSS), example : 2003-04-26T03:01:02.999
static Date	now()
static Date	parse(String dateAsString) Utility method to parse a Date following ISO_DATE_FORMAT, returns null if the given String is null.
static Date	parseDatetime(String dateAsString) Utility method to parse a Date following ISO_DATE_TIME_FORMAT, returns null if the given String is null.
static Date	parseDatetimeWithMs(String dateAsString) Utility method to parse a Date following ISO_DATE_TIME_FORMAT_WITH_MS, returns null if the given String is null.
static int	secondOf(Date date) Extracts the second of the given Date.
static long	timeDifference(Date date1, Date date2) Compute the time difference between the two given dates in milliseconds, it always gives a positive result.
static Calendar	toCalendar(Date date) Converts the given Date to Calendar, returns null if the given Date is null.
static Date	tomorrow()
static Date	truncateTime(Date date) Returns a copy of the given date without the time part (which is set to 00:00:00), for example : truncateTime(2008-12-29T23:45:12) will give 2008-12-29T00:00:00.
static int	yearOf(Date date) Extracts the year of the given Date.
static Date	yesterday()

Methods inherited from class java.lang.Object

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

Constructor Detail

Dates

public Dates()

Method Detail

newIsoDateFormat

public static DateFormat newIsoDateFormat()

ISO 8601 date format (yyyy-MM-dd), example : 2003-04-23

newIsoDateTimeFormat

public static DateFormat newIsoDateTimeFormat()

ISO 8601 date-time format (yyyy-MM-dd'T'HH:mm:ss), example : 2003-04-26T13:01:02

newIsoDateTimeWithMsFormat

public static DateFormat newIsoDateTimeWithMsFormat()

ISO 8601 date-time format with millisecond (yyyy-MM-dd'T'HH:mm:ss.SSS), example : 2003-04-26T03:01:02.999

formatAsDatetime

public static String formatAsDatetime(Date date)

Formats the given date using the ISO 8601 date-time format (yyyy-MM-dd'T'HH:mm:ss).
Method in synchronized because SimpleDateFormat is not thread safe (sigh).

Returns null if given the date is null.

Parameters:

date - the date to format.

Returns:

the formatted date or null if given the date was null.

formatAsDatetimeWithMs

public static String formatAsDatetimeWithMs(Date date)

Formats the given date using the ISO 8601 date-time format with millisecond (yyyy-MM-dd'T'HH:mm:ss:SSS).
Method in synchronized because SimpleDateFormat is not thread safe (sigh).

Returns null if given the date is null.

Parameters:

date - the date to format.

Returns:

the formatted date or null if given the date was null.

formatAsDatetime

public static String formatAsDatetime(Calendar calendar)

Formats the date of the given calendar using the ISO 8601 date-time format (yyyy-MM-dd'T'HH:mm:ss).
Method is thread safe.

Returns null if the given calendar is null.

Parameters:

calendar - the calendar to format.

Returns:

the formatted calendar or null if the given calendar was null.

parse

public static Date parse(String dateAsString)

Utility method to parse a Date following ISO_DATE_FORMAT, returns null if the given String is null.

Parameters:

dateAsString - the string to parse as a Date following ISO_DATE_FORMAT

Returns:

the corresponding Date or null if the given String is null.

Throws:

RuntimeException - encapsulating ParseException if the string can't be parsed as a Date

parseDatetime

public static Date parseDatetime(String dateAsString)

Utility method to parse a Date following ISO_DATE_TIME_FORMAT, returns null if the given String is null.

Example:

 Date date = parseDatetime("2003-04-26T03:01:02");
 

Parameters:

dateAsString - the string to parse as a Date following ISO_DATE_TIME_FORMAT

Returns:

the corresponding Date with time details or null if the given String is null.

Throws:

RuntimeException - encapsulating ParseException if the string can't be parsed as a Date

parseDatetimeWithMs

public static Date parseDatetimeWithMs(String dateAsString)

Utility method to parse a Date following ISO_DATE_TIME_FORMAT_WITH_MS, returns null if the given String is null.

Example:

 Date date = parseDatetimeWithMs("2003-04-26T03:01:02.999");
 

Parameters:

dateAsString - the string to parse as a Date following ISO_DATE_TIME_FORMAT_WITH_MS

Returns:

the corresponding Date with time details or null if the given String is null.

Throws:

RuntimeException - encapsulating ParseException if the string can't be parsed as a Date

toCalendar

public static Calendar toCalendar(Date date)

Converts the given Date to Calendar, returns null if the given Date is null.

Parameters:

date - the date to convert to a Calendar.

Returns:

the Calendar corresponding to the given Date or null if the given Date is null.

yearOf

public static int yearOf(Date date)

Extracts the year of the given Date.

Parameters:

date - the date to extract the year from - must not be null.

Returns:

the year of the given Date

Throws:

NullPointerException - if given Date is null

monthOf

public static int monthOf(Date date)

Dates Extracts the month of the given Date starting at 1 (January=1, February=2, ...).

Parameters:

date - the date to extract the month from - must not be null.

Returns:

the month of the given Date starting at 1 (January=1, February=2, ...)

Throws:

NullPointerException - if given Date is null

dayOfMonthOf

public static int dayOfMonthOf(Date date)

Dates Extracts the day of month of the given Date.

Parameters:

date - the date to extract the day of month from - must not be null.

Returns:

the day of month of the given Date

Throws:

NullPointerException - if given Date is null

dayOfWeekOf

public static int dayOfWeekOf(Date date)

Extracts the day of week of the given Date, returned value follows Calendar.DAY_OF_WEEK .

Parameters:

date - the date to extract the day of week from - must not be null.

Returns:

the day of week of the given Date

Throws:

NullPointerException - if given Date is null

hourOfDayOf

public static int hourOfDayOf(Date date)

Extracts the hour of day if the given Date (24-hour clock).

Parameters:

date - the date to extract the hour of day from - must not be null.

Returns:

the hour of day of the given Date (24-hour clock)

Throws:

NullPointerException - if given Date is null

minuteOf

public static int minuteOf(Date date)

Dates Extracts the minute of the given Date.

Parameters:

date - the date to extract the minute from - must not be null.

Returns:

the minute of the given Date

Throws:

NullPointerException - if given Date is null

secondOf

public static int secondOf(Date date)

Extracts the second of the given Date.

Parameters:

date - the date to extract the second from - must not be null.

Returns:

the second of the given Date

Throws:

NullPointerException - if given Date is null

millisecondOf

public static int millisecondOf(Date date)

Extracts the millisecond of the given Date.

Parameters:

date - the date to extract the millisecond from - must not be null.

Returns:

the millisecond of the given Date

Throws:

NullPointerException - if given Date is null

timeDifference

public static long timeDifference(Date date1,
                                  Date date2)

Compute the time difference between the two given dates in milliseconds, it always gives a positive result.

Parameters:

date1 - the first date.

date1 - the second date.

Returns:

the difference between the two given dates in milliseconds

Throws:

IllegalArgumentException - if one a the given Date is null.

truncateTime

public static Date truncateTime(Date date)

Returns a copy of the given date without the time part (which is set to 00:00:00), for example :
truncateTime(2008-12-29T23:45:12) will give 2008-12-29T00:00:00.

Returns null if the given Date is null.

Parameters:

date - we want to get the day part (the parameter is read only).

Returns:

the truncated date.

now

public static Date now()

yesterday

public static Date yesterday()

tomorrow

public static Date tomorrow()

formatTimeDifference

public static String formatTimeDifference(Date date1,
                                          Date date2)

Utility method to display a human readable time difference.

Parameters:

date1 -

date2 -

Returns:

a human readable time difference.