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java.lang.Objectjava.text.Format
java.text.NumberFormat
org.apache.commons.math.fraction.AbstractFormat
org.apache.commons.math.fraction.FractionFormat
org.apache.commons.math.fraction.ProperFractionFormat
public class ProperFractionFormat
Formats a Fraction number in proper format. The number format for each of the whole number, numerator and, denominator can be configured.
Minus signs are only allowed in the whole number part - i.e.,
"-3 1/2" is legitimate and denotes -7/2, but "-3 -1/2" is invalid and
will result in a ParseException.
| Nested Class Summary |
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| Nested classes/interfaces inherited from class java.text.NumberFormat |
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NumberFormat.Field |
| Field Summary |
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| Fields inherited from class org.apache.commons.math.fraction.AbstractFormat |
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denominatorFormat, numeratorFormat |
| Fields inherited from class java.text.NumberFormat |
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FRACTION_FIELD, INTEGER_FIELD |
| Constructor Summary | |
|---|---|
ProperFractionFormat()
Create a proper formatting instance with the default number format for the whole, numerator, and denominator. |
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ProperFractionFormat(NumberFormat format)
Create a proper formatting instance with a custom number format for the whole, numerator, and denominator. |
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ProperFractionFormat(NumberFormat wholeFormat,
NumberFormat numeratorFormat,
NumberFormat denominatorFormat)
Create a proper formatting instance with a custom number format for each of the whole, numerator, and denominator. |
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| Method Summary | |
|---|---|
StringBuffer |
format(Fraction fraction,
StringBuffer toAppendTo,
FieldPosition pos)
Formats a Fraction object to produce a string. |
NumberFormat |
getWholeFormat()
Access the whole format. |
Fraction |
parse(String source,
ParsePosition pos)
Parses a string to produce a Fraction object. |
void |
setWholeFormat(NumberFormat format)
Modify the whole format. |
| Methods inherited from class org.apache.commons.math.fraction.FractionFormat |
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format, formatFraction, getAvailableLocales, getDefaultNumberFormat, getImproperInstance, getImproperInstance, getProperInstance, getProperInstance, parse |
| Methods inherited from class org.apache.commons.math.fraction.AbstractFormat |
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format, format, getDefaultNumberFormat, getDenominatorFormat, getNumeratorFormat, parseAndIgnoreWhitespace, parseNextCharacter, setDenominatorFormat, setNumeratorFormat |
| Methods inherited from class java.text.Format |
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format, formatToCharacterIterator, parseObject |
| Methods inherited from class java.lang.Object |
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finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
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public ProperFractionFormat()
public ProperFractionFormat(NumberFormat format)
format - the custom format for the whole, numerator, and
denominator.
public ProperFractionFormat(NumberFormat wholeFormat,
NumberFormat numeratorFormat,
NumberFormat denominatorFormat)
wholeFormat - the custom format for the whole.numeratorFormat - the custom format for the numerator.denominatorFormat - the custom format for the denominator.| Method Detail |
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public StringBuffer format(Fraction fraction,
StringBuffer toAppendTo,
FieldPosition pos)
Fraction object to produce a string. The fraction
is output in proper format.
format in class FractionFormatfraction - the object to format.toAppendTo - where the text is to be appendedpos - On input: an alignment field, if desired. On output: the
offsets of the alignment field
public NumberFormat getWholeFormat()
public Fraction parse(String source,
ParsePosition pos)
Fraction object. This method
expects the string to be formatted as a proper fraction.
Minus signs are only allowed in the whole number part - i.e.,
"-3 1/2" is legitimate and denotes -7/2, but "-3 -1/2" is invalid and
will result in a ParseException.
parse in class FractionFormatsource - the string to parsepos - input/ouput parsing parameter.
Fraction object.public void setWholeFormat(NumberFormat format)
format - The new whole format value.
NullArgumentException - if format is null.
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