org.apache.commons.math.fraction

Class BigFractionFormat

java.lang.Object

java.text.Format

java.text.NumberFormat

org.apache.commons.math.fraction.AbstractFormat

org.apache.commons.math.fraction.BigFractionFormat

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

Direct Known Subclasses:

ProperBigFractionFormat

public class BigFractionFormat
extends AbstractFormat
implements java.io.Serializable

Formats a BigFraction number in proper format or improper format.

The number format for each of the whole number, numerator and, denominator can be configured.

Since:

2.0

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.text.NumberFormat

java.text.NumberFormat.Field

Field Summary

Fields inherited from class java.text.NumberFormat

FRACTION_FIELD, INTEGER_FIELD

Constructor Summary

Constructors

Constructor and Description
BigFractionFormat() Create an improper formatting instance with the default number format for the numerator and denominator.
BigFractionFormat(java.text.NumberFormat format) Create an improper formatting instance with a custom number format for both the numerator and denominator.
BigFractionFormat(java.text.NumberFormat numeratorFormat, java.text.NumberFormat denominatorFormat) Create an improper formatting instance with a custom number format for the numerator and a custom number format for the denominator.

Method Summary

Modifier and Type	Method and Description
java.lang.StringBuffer	format(BigFraction BigFraction, java.lang.StringBuffer toAppendTo, java.text.FieldPosition pos) Formats a BigFraction object to produce a string.
java.lang.StringBuffer	format(java.lang.Object obj, java.lang.StringBuffer toAppendTo, java.text.FieldPosition pos) Formats an object and appends the result to a StringBuffer.
static java.lang.String	formatBigFraction(BigFraction f) This static method calls formatBigFraction() on a default instance of BigFractionFormat.
static java.util.Locale[]	getAvailableLocales() Get the set of locales for which complex formats are available.
static BigFractionFormat	getImproperInstance() Returns the default complex format for the current locale.
static BigFractionFormat	getImproperInstance(java.util.Locale locale) Returns the default complex format for the given locale.
static BigFractionFormat	getProperInstance() Returns the default complex format for the current locale.
static BigFractionFormat	getProperInstance(java.util.Locale locale) Returns the default complex format for the given locale.
BigFraction	parse(java.lang.String source) Parses a string to produce a BigFraction object.
BigFraction	parse(java.lang.String source, java.text.ParsePosition pos) Parses a string to produce a BigFraction object.

Methods inherited from class org.apache.commons.math.fraction.AbstractFormat

format, format, getDenominatorFormat, getNumeratorFormat, setDenominatorFormat, setNumeratorFormat

Methods inherited from class java.text.NumberFormat

clone, equals, format, format, getCurrency, getCurrencyInstance, getCurrencyInstance, getInstance, getInstance, getIntegerInstance, getIntegerInstance, getMaximumFractionDigits, getMaximumIntegerDigits, getMinimumFractionDigits, getMinimumIntegerDigits, getNumberInstance, getNumberInstance, getPercentInstance, getPercentInstance, getRoundingMode, hashCode, isGroupingUsed, isParseIntegerOnly, parseObject, setCurrency, setGroupingUsed, setMaximumFractionDigits, setMaximumIntegerDigits, setMinimumFractionDigits, setMinimumIntegerDigits, setParseIntegerOnly, setRoundingMode

Methods inherited from class java.text.Format

format, formatToCharacterIterator, parseObject

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BigFractionFormat

public BigFractionFormat()

Create an improper formatting instance with the default number format for the numerator and denominator.

BigFractionFormat

public BigFractionFormat(java.text.NumberFormat format)

Create an improper formatting instance with a custom number format for both the numerator and denominator.

Parameters:

format - the custom format for both the numerator and denominator.

BigFractionFormat

public BigFractionFormat(java.text.NumberFormat numeratorFormat,
                         java.text.NumberFormat denominatorFormat)

Create an improper formatting instance with a custom number format for the numerator and a custom number format for the denominator.

Parameters:

numeratorFormat - the custom format for the numerator.

denominatorFormat - the custom format for the denominator.

Method Detail

getAvailableLocales

public static java.util.Locale[] getAvailableLocales()

Get the set of locales for which complex formats are available. This is the same set as the NumberFormat set.

Returns:

available complex format locales.

formatBigFraction

public static java.lang.String formatBigFraction(BigFraction f)

This static method calls formatBigFraction() on a default instance of BigFractionFormat.

Parameters:

f - BigFraction object to format

Returns:

A formatted BigFraction in proper form.

getImproperInstance

public static BigFractionFormat getImproperInstance()

Returns the default complex format for the current locale.

Returns:

the default complex format.

getImproperInstance

public static BigFractionFormat getImproperInstance(java.util.Locale locale)

Returns the default complex format for the given locale.

Parameters:

locale - the specific locale used by the format.

Returns:

the complex format specific to the given locale.

getProperInstance

public static BigFractionFormat getProperInstance()

Returns the default complex format for the current locale.

Returns:

the default complex format.

getProperInstance

public static BigFractionFormat getProperInstance(java.util.Locale locale)

Returns the default complex format for the given locale.

Parameters:

locale - the specific locale used by the format.

Returns:

the complex format specific to the given locale.

format

public java.lang.StringBuffer format(BigFraction BigFraction,
                                     java.lang.StringBuffer toAppendTo,
                                     java.text.FieldPosition pos)

Formats a BigFraction object to produce a string. The BigFraction is output in improper format.

Parameters:

BigFraction - the object to format.

toAppendTo - where the text is to be appended

pos - On input: an alignment field, if desired. On output: the offsets of the alignment field

Returns:

the value passed in as toAppendTo.

format

public java.lang.StringBuffer format(java.lang.Object obj,
                                     java.lang.StringBuffer toAppendTo,
                                     java.text.FieldPosition pos)

Formats an object and appends the result to a StringBuffer. obj must be either a BigFraction object or a BigInteger object or a Number object. Any other type of object will result in an IllegalArgumentException being thrown.

Overrides:

format in class java.text.NumberFormat

Parameters:

obj - the object to format.

toAppendTo - where the text is to be appended

pos - On input: an alignment field, if desired. On output: the offsets of the alignment field

Returns:

the value passed in as toAppendTo.

Throws:

java.lang.IllegalArgumentException - is obj is not a valid type.

See Also:

Format.format(java.lang.Object, java.lang.StringBuffer, java.text.FieldPosition)

parse

public BigFraction parse(java.lang.String source)
                  throws java.text.ParseException

Parses a string to produce a BigFraction object.

Overrides:

parse in class java.text.NumberFormat

Parameters:

source - the string to parse

Returns:

the parsed BigFraction object.

Throws:

java.text.ParseException - if the beginning of the specified string cannot be parsed.

parse

public BigFraction parse(java.lang.String source,
                         java.text.ParsePosition pos)

Parses a string to produce a BigFraction object. This method expects the string to be formatted as an improper BigFraction.

Specified by:

parse in class java.text.NumberFormat

Parameters:

source - the string to parse

pos - input/ouput parsing parameter.

Returns:

the parsed BigFraction object.