Package org.apache.commons.math.fraction

Class 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
    Version:
    $Revision: 983921 $ $Date: 2010-08-10 12:46:06 +0200 (mar. 10 août 2010) $
    See Also:
    Serialized Form

    • Nested Class Summary

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

        java.text.NumberFormat.Field

    • Constructor Summary

      Constructors 
      Constructor 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

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      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.
      java.lang.StringBuffer format​(BigFraction BigFraction, java.lang.StringBuffer toAppendTo, java.text.FieldPosition pos)
      Formats a BigFraction object to produce a string.
      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.
      protected java.math.BigInteger parseNextBigInteger​(java.lang.String source, java.text.ParsePosition pos)
      Parses a string to produce a BigInteger.

      • 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

        finalize, 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.

      • parseNextBigInteger

        protected java.math.BigInteger parseNextBigInteger​(java.lang.String source,
                                                   java.text.ParsePosition pos)
        Parses a string to produce a BigInteger.
        Parameters:
        source - the string to parse
        pos - input/ouput parsing parameter.
        Returns:
        a parsed BigInteger or null if string does not contain a BigInteger at the specified position