Package org.apache.commons.math.util

Class CompositeFormat

java.lang.Object
java.text.Format
org.apache.commons.math.util.CompositeFormat
All Implemented Interfaces:
Serializable, Cloneable
Direct Known Subclasses:
ComplexFormat, RealVectorFormat, Vector3DFormat
public abstract class CompositeFormat extends Format
Base class for formatters of composite objects (complex numbers, vectors ...).
Version:
$Revision: 1042376 $ $Date: 2010-12-05 16:54:55 +0100 (dim. 05 déc. 2010) $
See Also:

  • Constructor Details

    • CompositeFormat

      public CompositeFormat()

  • Method Details

    • getDefaultNumberFormat

      protected static NumberFormat getDefaultNumberFormat()
      Create a default number format. The default number format is based on NumberFormat.getInstance() with the only customizing that the maximum number of fraction digits is set to 2.
      Returns:
      the default number format.

    • getDefaultNumberFormat

      protected static NumberFormat getDefaultNumberFormat(Locale locale)
      Create a default number format. The default number format is based on NumberFormat.getInstance(java.util.Locale) with the only customizing that the maximum number of fraction digits is set to 2.
      Parameters:
      locale - the specific locale used by the format.
      Returns:
      the default number format specific to the given locale.

    • parseAndIgnoreWhitespace

      protected void parseAndIgnoreWhitespace(String source, ParsePosition pos)
      Parses source until a non-whitespace character is found.
      Parameters:
      source - the string to parse
      pos - input/ouput parsing parameter. On output, pos holds the index of the next non-whitespace character.

    • parseNextCharacter

      protected char parseNextCharacter(String source, ParsePosition pos)
      Parses source until a non-whitespace character is found.
      Parameters:
      source - the string to parse
      pos - input/ouput parsing parameter.
      Returns:
      the first non-whitespace character.

    • parseNumber

      protected Number parseNumber(String source, NumberFormat format, ParsePosition pos)
      Parses source for a number. This method can parse normal, numeric values as well as special values. These special values include Double.NaN, Double.POSITIVE_INFINITY, Double.NEGATIVE_INFINITY.
      Parameters:
      source - the string to parse
      format - the number format used to parse normal, numeric values.
      pos - input/ouput parsing parameter.
      Returns:
      the parsed number.

    • parseFixedstring

      protected boolean parseFixedstring(String source, String expected, ParsePosition pos)
      Parse source for an expected fixed string.
      Parameters:
      source - the string to parse
      expected - expected string
      pos - input/ouput parsing parameter.
      Returns:
      true if the expected string was there

    • formatDouble

      protected StringBuffer formatDouble(double value, NumberFormat format, StringBuffer toAppendTo, FieldPosition pos)
      Formats a double value to produce a string. In general, the value is formatted using the formatting rules of format. There are three exceptions to this:
      1. NaN is formatted as '(NaN)'
      2. Positive infinity is formatted as '(Infinity)'
      3. Negative infinity is formatted as '(-Infinity)'
      Parameters:
      value - the double to format.
      format - the format used.
      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.