Package org.apache.commons.lang.time

Class DurationFormatUtils

java.lang.Object

org.apache.commons.lang.time.DurationFormatUtils

public class DurationFormatUtils
extends Object

Duration formatting utilities and constants. The following table describes the tokens used in the pattern language for formatting.

character	duration element
y	years
M	months
d	days
H	hours
m	minutes
s	seconds
S	milliseconds

Since:

2.1

Version:

$Id: DurationFormatUtils.java 1057072 2011-01-10 01:55:57Z niallp $

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static class	DurationFormatUtils.Token	Element that is parsed from the format pattern.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static final Object	d
(package private) static final Object	H
static final String	ISO_EXTENDED_FORMAT_PATTERN	Pattern used with FastDateFormat and SimpleDateFormat for the ISO8601 period format used in durations.
(package private) static final Object	m
(package private) static final Object	M
(package private) static final Object	s
(package private) static final Object	S
(package private) static final Object	y

Constructor Summary

Constructors

Constructor	Description
DurationFormatUtils()	DurationFormatUtils instances should NOT be constructed in standard programming.

Method Summary

Modifier and Type	Method	Description
(package private) static String	format(DurationFormatUtils.Token[] tokens, int years, int months, int days, int hours, int minutes, int seconds, int milliseconds, boolean padWithZeros)	The internal method to do the formatting.
static String	formatDuration(long durationMillis, String format)	Formats the time gap as a string, using the specified format, and padding with zeros and using the default timezone.
static String	formatDuration(long durationMillis, String format, boolean padWithZeros)	Formats the time gap as a string, using the specified format.
static String	formatDurationHMS(long durationMillis)	Formats the time gap as a string.
static String	formatDurationISO(long durationMillis)	Formats the time gap as a string.
static String	formatDurationWords(long durationMillis, boolean suppressLeadingZeroElements, boolean suppressTrailingZeroElements)	Formats an elapsed time into a plurialization correct string.
static String	formatPeriod(long startMillis, long endMillis, String format)	Formats the time gap as a string, using the specified format.
static String	formatPeriod(long startMillis, long endMillis, String format, boolean padWithZeros, TimeZone timezone)	Formats the time gap as a string, using the specified format.
static String	formatPeriodISO(long startMillis, long endMillis)	Formats the time gap as a string.
(package private) static DurationFormatUtils.Token[]	lexx(String format)	Parses a classic date format string into Tokens

Methods inherited from class java.lang.Object

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

Field Details

ISO_EXTENDED_FORMAT_PATTERN

public static final String ISO_EXTENDED_FORMAT_PATTERN

Pattern used with FastDateFormat and SimpleDateFormat for the ISO8601 period format used in durations.

See Also:

• FastDateFormat
• SimpleDateFormat
• Constant Field Values

y

static final Object y

M

static final Object M

d

static final Object d

H

static final Object H

m

static final Object m

s

static final Object s

S

static final Object S

Constructor Details

DurationFormatUtils

public DurationFormatUtils()

DurationFormatUtils instances should NOT be constructed in standard programming.

This constructor is public to permit tools that require a JavaBean instance to operate.

Method Details

formatDurationHMS

public static String formatDurationHMS(long durationMillis)

Formats the time gap as a string.

The format used is ISO8601-like: H:m:s.S.

Parameters:

durationMillis - the duration to format

Returns:

the time as a String

formatDurationISO

public static String formatDurationISO(long durationMillis)

Formats the time gap as a string.

The format used is the ISO8601 period format.

This method formats durations using the days and lower fields of the ISO format pattern, such as P7D6TH5M4.321S.

Parameters:

durationMillis - the duration to format

Returns:

the time as a String

formatDuration

public static String formatDuration(long durationMillis,
 String format)

Formats the time gap as a string, using the specified format, and padding with zeros and using the default timezone.

This method formats durations using the days and lower fields of the format pattern. Months and larger are not used.

Parameters:

durationMillis - the duration to format

format - the way in which to format the duration

Returns:

the time as a String

formatDuration

public static String formatDuration(long durationMillis,
 String format,
 boolean padWithZeros)

Formats the time gap as a string, using the specified format. Padding the left hand side of numbers with zeroes is optional and the timezone may be specified.

This method formats durations using the days and lower fields of the format pattern. Months and larger are not used.

Parameters:

durationMillis - the duration to format

format - the way in which to format the duration

padWithZeros - whether to pad the left hand side of numbers with 0's

Returns:

the time as a String

formatDurationWords

public static String formatDurationWords(long durationMillis,
 boolean suppressLeadingZeroElements,
 boolean suppressTrailingZeroElements)

Formats an elapsed time into a plurialization correct string.

This method formats durations using the days and lower fields of the format pattern. Months and larger are not used.

Parameters:

durationMillis - the elapsed time to report in milliseconds

suppressLeadingZeroElements - suppresses leading 0 elements

suppressTrailingZeroElements - suppresses trailing 0 elements

Returns:

the formatted text in days/hours/minutes/seconds

formatPeriodISO

public static String formatPeriodISO(long startMillis,
 long endMillis)

Formats the time gap as a string.

The format used is the ISO8601 period format.

Parameters:

startMillis - the start of the duration to format

endMillis - the end of the duration to format

Returns:

the time as a String

formatPeriod

public static String formatPeriod(long startMillis,
 long endMillis,
 String format)

Formats the time gap as a string, using the specified format. Padding the left hand side of numbers with zeroes is optional.

Parameters:

startMillis - the start of the duration

endMillis - the end of the duration

format - the way in which to format the duration

Returns:

the time as a String

formatPeriod

public static String formatPeriod(long startMillis,
 long endMillis,
 String format,
 boolean padWithZeros,
 TimeZone timezone)

Formats the time gap as a string, using the specified format. Padding the left hand side of numbers with zeroes is optional and the timezone may be specified.

When calculating the difference between months/days, it chooses to calculate months first. So when working out the number of months and days between January 15th and March 10th, it choose 1 month and 23 days gained by choosing January->February = 1 month and then calculating days forwards, and not the 1 month and 26 days gained by choosing March -> February = 1 month and then calculating days backwards.

For more control, the Joda-Time library is recommended.

Parameters:

startMillis - the start of the duration

endMillis - the end of the duration

format - the way in which to format the duration

padWithZeros - whether to pad the left hand side of numbers with 0's

timezone - the millis are defined in

Returns:

the time as a String

format

static String format(DurationFormatUtils.Token[] tokens,
 int years,
 int months,
 int days,
 int hours,
 int minutes,
 int seconds,
 int milliseconds,
 boolean padWithZeros)

The internal method to do the formatting.

Parameters:

tokens - the tokens

years - the number of years

months - the number of months

days - the number of days

hours - the number of hours

minutes - the number of minutes

seconds - the number of seconds

milliseconds - the number of millis

padWithZeros - whether to pad

Returns:

the formatted string

lexx

static DurationFormatUtils.Token[] lexx(String format)

Parses a classic date format string into Tokens

Parameters:

format - to parse

Returns:

array of Token[]