org.apache.commons.lang3.time

Class DateFormatUtils

java.lang.Object

org.apache.commons.lang3.time.DateFormatUtils

public class DateFormatUtils
extends Object

Date and time formatting utilities and constants.

Formatting is performed using the thread-safe FastDateFormat class.

Note that the JDK has a bug wherein calling Calendar.get(int) will override any previously called Calendar.clear() calls. See LANG-755.

Since:

2.0

Version:

$Id: DateFormatUtils.java 1612038 2014-07-20 06:46:57Z ggregory $

Field Summary

Fields

Modifier and Type	Field and Description
static FastDateFormat	ISO_DATE_FORMAT ISO 8601 formatter for date without time zone.
static FastDateFormat	ISO_DATE_TIME_ZONE_FORMAT ISO 8601-like formatter for date with time zone.
static FastDateFormat	ISO_DATETIME_FORMAT ISO 8601 formatter for date-time without time zone.
static FastDateFormat	ISO_DATETIME_TIME_ZONE_FORMAT ISO 8601 formatter for date-time with time zone.
static FastDateFormat	ISO_TIME_FORMAT ISO 8601 formatter for time without time zone.
static FastDateFormat	ISO_TIME_NO_T_FORMAT ISO 8601-like formatter for time without time zone.
static FastDateFormat	ISO_TIME_NO_T_TIME_ZONE_FORMAT ISO 8601-like formatter for time with time zone.
static FastDateFormat	ISO_TIME_TIME_ZONE_FORMAT ISO 8601 formatter for time with time zone.
static FastDateFormat	SMTP_DATETIME_FORMAT SMTP (and probably other) date headers.

Constructor Summary

Constructors

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

Method Summary

Methods

Modifier and Type	Method and Description
static String	format(Calendar calendar, String pattern) Formats a calendar into a specific pattern.
static String	format(Calendar calendar, String pattern, Locale locale) Formats a calendar into a specific pattern in a locale.
static String	format(Calendar calendar, String pattern, TimeZone timeZone) Formats a calendar into a specific pattern in a time zone.
static String	format(Calendar calendar, String pattern, TimeZone timeZone, Locale locale) Formats a calendar into a specific pattern in a time zone and locale.
static String	format(Date date, String pattern) Formats a date/time into a specific pattern.
static String	format(Date date, String pattern, Locale locale) Formats a date/time into a specific pattern in a locale.
static String	format(Date date, String pattern, TimeZone timeZone) Formats a date/time into a specific pattern in a time zone.
static String	format(Date date, String pattern, TimeZone timeZone, Locale locale) Formats a date/time into a specific pattern in a time zone and locale.
static String	format(long millis, String pattern) Formats a date/time into a specific pattern.
static String	format(long millis, String pattern, Locale locale) Formats a date/time into a specific pattern in a locale.
static String	format(long millis, String pattern, TimeZone timeZone) Formats a date/time into a specific pattern in a time zone.
static String	format(long millis, String pattern, TimeZone timeZone, Locale locale) Formats a date/time into a specific pattern in a time zone and locale.
static String	formatUTC(Date date, String pattern) Formats a date/time into a specific pattern using the UTC time zone.
static String	formatUTC(Date date, String pattern, Locale locale) Formats a date/time into a specific pattern using the UTC time zone.
static String	formatUTC(long millis, String pattern) Formats a date/time into a specific pattern using the UTC time zone.
static String	formatUTC(long millis, String pattern, Locale locale) Formats a date/time into a specific pattern using the UTC time zone.

Methods inherited from class java.lang.Object

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

Field Detail

ISO_DATETIME_FORMAT

public static final FastDateFormat ISO_DATETIME_FORMAT

ISO 8601 formatter for date-time without time zone. The format used is yyyy-MM-dd'T'HH:mm:ss.

ISO_DATETIME_TIME_ZONE_FORMAT

public static final FastDateFormat ISO_DATETIME_TIME_ZONE_FORMAT

ISO 8601 formatter for date-time with time zone. The format used is yyyy-MM-dd'T'HH:mm:ssZZ.

ISO_DATE_FORMAT

public static final FastDateFormat ISO_DATE_FORMAT

ISO 8601 formatter for date without time zone. The format used is yyyy-MM-dd.

ISO_DATE_TIME_ZONE_FORMAT

public static final FastDateFormat ISO_DATE_TIME_ZONE_FORMAT

ISO 8601-like formatter for date with time zone. The format used is yyyy-MM-ddZZ. This pattern does not comply with the formal ISO 8601 specification as the standard does not allow a time zone without a time.

ISO_TIME_FORMAT

public static final FastDateFormat ISO_TIME_FORMAT

ISO 8601 formatter for time without time zone. The format used is 'T'HH:mm:ss.

ISO_TIME_TIME_ZONE_FORMAT

public static final FastDateFormat ISO_TIME_TIME_ZONE_FORMAT

ISO 8601 formatter for time with time zone. The format used is 'T'HH:mm:ssZZ.

ISO_TIME_NO_T_FORMAT

public static final FastDateFormat ISO_TIME_NO_T_FORMAT

ISO 8601-like formatter for time without time zone. The format used is HH:mm:ss. This pattern does not comply with the formal ISO 8601 specification as the standard requires the 'T' prefix for times.

ISO_TIME_NO_T_TIME_ZONE_FORMAT

public static final FastDateFormat ISO_TIME_NO_T_TIME_ZONE_FORMAT

ISO 8601-like formatter for time with time zone. The format used is HH:mm:ssZZ. This pattern does not comply with the formal ISO 8601 specification as the standard requires the 'T' prefix for times.

SMTP_DATETIME_FORMAT

public static final FastDateFormat SMTP_DATETIME_FORMAT

SMTP (and probably other) date headers. The format used is EEE, dd MMM yyyy HH:mm:ss Z in US locale.

Constructor Detail

DateFormatUtils

public DateFormatUtils()

DateFormatUtils instances should NOT be constructed in standard programming.

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

Method Detail

formatUTC

public static String formatUTC(long millis,
               String pattern)

Formats a date/time into a specific pattern using the UTC time zone.

Parameters:

millis - the date to format expressed in milliseconds

pattern - the pattern to use to format the date, not null

Returns:

the formatted date

formatUTC

public static String formatUTC(Date date,
               String pattern)

Formats a date/time into a specific pattern using the UTC time zone.

Parameters:

date - the date to format, not null

pattern - the pattern to use to format the date, not null

Returns:

the formatted date

formatUTC

public static String formatUTC(long millis,
               String pattern,
               Locale locale)

Formats a date/time into a specific pattern using the UTC time zone.

Parameters:

millis - the date to format expressed in milliseconds

pattern - the pattern to use to format the date, not null

locale - the locale to use, may be null

Returns:

the formatted date

formatUTC

public static String formatUTC(Date date,
               String pattern,
               Locale locale)

Formats a date/time into a specific pattern using the UTC time zone.

Parameters:

date - the date to format, not null

pattern - the pattern to use to format the date, not null

locale - the locale to use, may be null

Returns:

the formatted date

format

public static String format(long millis,
            String pattern)

Formats a date/time into a specific pattern.

Parameters:

millis - the date to format expressed in milliseconds

pattern - the pattern to use to format the date, not null

Returns:

the formatted date

format

public static String format(Date date,
            String pattern)

Formats a date/time into a specific pattern.

Parameters:

date - the date to format, not null

pattern - the pattern to use to format the date, not null

Returns:

the formatted date

format

public static String format(Calendar calendar,
            String pattern)

Formats a calendar into a specific pattern.

Parameters:

calendar - the calendar to format, not null

pattern - the pattern to use to format the calendar, not null

Returns:

the formatted calendar

Since:

2.4

See Also:

FastDateFormat.format(Calendar)

format

public static String format(long millis,
            String pattern,
            TimeZone timeZone)

Formats a date/time into a specific pattern in a time zone.

Parameters:

millis - the time expressed in milliseconds

pattern - the pattern to use to format the date, not null

timeZone - the time zone to use, may be null

Returns:

the formatted date

format

public static String format(Date date,
            String pattern,
            TimeZone timeZone)

Formats a date/time into a specific pattern in a time zone.

Parameters:

date - the date to format, not null

pattern - the pattern to use to format the date, not null

timeZone - the time zone to use, may be null

Returns:

the formatted date

format

public static String format(Calendar calendar,
            String pattern,
            TimeZone timeZone)

Formats a calendar into a specific pattern in a time zone.

Parameters:

calendar - the calendar to format, not null

pattern - the pattern to use to format the calendar, not null

timeZone - the time zone to use, may be null

Returns:

the formatted calendar

Since:

2.4

See Also:

FastDateFormat.format(Calendar)

format

public static String format(long millis,
            String pattern,
            Locale locale)

Formats a date/time into a specific pattern in a locale.

Parameters:

millis - the date to format expressed in milliseconds

pattern - the pattern to use to format the date, not null

locale - the locale to use, may be null

Returns:

the formatted date

format

public static String format(Date date,
            String pattern,
            Locale locale)

Formats a date/time into a specific pattern in a locale.

Parameters:

date - the date to format, not null

pattern - the pattern to use to format the date, not null

locale - the locale to use, may be null

Returns:

the formatted date

format

public static String format(Calendar calendar,
            String pattern,
            Locale locale)

Formats a calendar into a specific pattern in a locale.

Parameters:

calendar - the calendar to format, not null

pattern - the pattern to use to format the calendar, not null

locale - the locale to use, may be null

Returns:

the formatted calendar

Since:

2.4

See Also:

FastDateFormat.format(Calendar)

format

public static String format(long millis,
            String pattern,
            TimeZone timeZone,
            Locale locale)

Formats a date/time into a specific pattern in a time zone and locale.

Parameters:

millis - the date to format expressed in milliseconds

pattern - the pattern to use to format the date, not null

timeZone - the time zone to use, may be null

locale - the locale to use, may be null

Returns:

the formatted date

format

public static String format(Date date,
            String pattern,
            TimeZone timeZone,
            Locale locale)

Formats a date/time into a specific pattern in a time zone and locale.

Parameters:

date - the date to format, not null

pattern - the pattern to use to format the date, not null, not null

timeZone - the time zone to use, may be null

locale - the locale to use, may be null

Returns:

the formatted date

format

public static String format(Calendar calendar,
            String pattern,
            TimeZone timeZone,
            Locale locale)

Formats a calendar into a specific pattern in a time zone and locale.

Parameters:

calendar - the calendar to format, not null

pattern - the pattern to use to format the calendar, not null

timeZone - the time zone to use, may be null

locale - the locale to use, may be null

Returns:

the formatted calendar

Since:

2.4

See Also:

FastDateFormat.format(Calendar)