com.Ostermiller.util
Class YearExtensionAround

java.lang.Object
  com.Ostermiller.util.YearExtensionAround

All Implemented Interfaces:

YearExtensionPolicy

public class YearExtensionAround
extends Object
implements YearExtensionPolicy

Extend years like '99 to 1999 based on dates around the current date.

Since:

ostermillerutils 1.08.00

Author:

Stephen Ostermiller http://ostermiller.org/contact.pl?regarding=Java+Utilities

Field Summary

static YearExtensionAround	CENTURY_1900 Extend a two digit year to a year in the 1900s 00 to 1900 01 to 1901 49 to 1949 50 to 1950 99 to 1999
static YearExtensionAround	CENTURY_2000 Extend a two digit year to a year in the 2000s 00 to 2000 01 to 2001 49 to 2049 50 to 2050 99 to 2099
static YearExtensionAround	LATEST Extend a two digit year to the nearest year that ends in those two digits.
static YearExtensionAround	NEAREST Extend a two digit year to the nearest year that ends in those two digits.

Constructor Summary

YearExtensionAround(int allowedYearsInPast)
Create a year extension nearest policy with the current year taken from the system time.

YearExtensionAround(int allowedYearsInPast, int currentYear)
Create a year extension nearest policy with the given current year

Method Summary

int	extendYear(int twoDigitYear) Extend a two digit year to the nearest year that ends in those two digits.
static YearExtensionAround	getLatest(int currentYear) Extend a two digit year to the nearest year that ends in those two digits.
static YearExtensionAround	getNearest(int currentYear) Extend a two digit year to the nearest year that ends in those two digits.
void	setAllowedYearsInPast(int allowedYearsInPast) Number of years in the past to allow dates
void	setCurrentYear(int currentYear) Set the current year.

Methods inherited from class java.lang.Object

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

Field Detail

NEAREST

public static final YearExtensionAround NEAREST

Extend a two digit year to the nearest year that ends in those two digits.

When it is the year 2000:

• 50 to 1950
• 99 to 1999
• 00 to 2000
• 01 to 2001

Since:

ostermillerutils 1.08.00

LATEST

public static final YearExtensionAround LATEST

Extend a two digit year to the nearest year that ends in those two digits.

When it is the year 2000:

• 01 to 1901
• 49 to 1949
• 50 to 1950
• 99 to 1999
• 00 to 2000

Since:

ostermillerutils 1.08.00

CENTURY_1900

public static final YearExtensionAround CENTURY_1900

Extend a two digit year to a year in the 1900s

• 00 to 1900
• 01 to 1901
• 49 to 1949
• 50 to 1950
• 99 to 1999

Since:

ostermillerutils 1.08.00

CENTURY_2000

public static final YearExtensionAround CENTURY_2000

Extend a two digit year to a year in the 2000s

• 00 to 2000
• 01 to 2001
• 49 to 2049
• 50 to 2050
• 99 to 2099

Since:

ostermillerutils 1.08.00

Constructor Detail

YearExtensionAround

public YearExtensionAround(int allowedYearsInPast)

Create a year extension nearest policy with the current year taken from the system time.

Since:

ostermillerutils 1.08.00

YearExtensionAround

public YearExtensionAround(int allowedYearsInPast,
                           int currentYear)

Create a year extension nearest policy with the given current year

Parameters:

currentYear - full year eg 2000

Since:

ostermillerutils 1.08.00

Method Detail

getNearest

public static final YearExtensionAround getNearest(int currentYear)

Extend a two digit year to the nearest year that ends in those two digits.

When it is the year 2000:

• 50 to 1950
• 99 to 1999
• 00 to 2000
• 01 to 2001

Parameters:

currentYear - the current year

Since:

ostermillerutils 1.08.00

getLatest

public static final YearExtensionAround getLatest(int currentYear)

Extend a two digit year to the nearest year that ends in those two digits.

When it is the year 2000:

• 01 to 1901
• 49 to 1949
• 50 to 1950
• 99 to 1999
• 00 to 2000

Parameters:

currentYear - the current year

Since:

ostermillerutils 1.08.00

setAllowedYearsInPast

public void setAllowedYearsInPast(int allowedYearsInPast)

Number of years in the past to allow dates

Parameters:

allowedYearsInPast - number between 0 and 99

setCurrentYear

public void setCurrentYear(int currentYear)

Set the current year.

Parameters:

currentYear - full year eg 2000

Since:

ostermillerutils 1.08.00

extendYear

public int extendYear(int twoDigitYear)

Extend a two digit year to the nearest year that ends in those two digits.

Will choose a year within 100 years of the current year. Whether the year is in the past or future is determined by how many years are allowed in the past.

Specified by:

extendYear in interface YearExtensionPolicy

Parameters:

twoDigitYear - year from 0 to 99

Returns:

Full year representation

Since:

ostermillerutils 1.08.00