cern.colt.matrix
Class FormerFactory
java.lang.Object
cern.colt.matrix.FormerFactory
public class FormerFactory
- extends Object
Factory producing implementations of Former
via
method create(); Serves to isolate the interface of String formatting from
the actual implementation. If you want to plug in a different String
formatting implementation, simply replace this class with your alternative.
- Version:
- 1.0, 21/07/00
- Author:
- wolfgang.hoschek@cern.ch
FormerFactory
public FormerFactory()
create
public Former create(String format)
- Constructs and returns a new format instance.
- Parameters:
format
- the format string following printf conventions. The string has
a prefix, a format code and a suffix. The prefix and suffix
become part of the formatted output. The format code directs
the formatting of the (single) parameter to be formatted. The
code has the following structure
- a % (required)
- a modifier (optional)
- +
- forces display of + for positive numbers
- 0
- show leading zeroes
- -
- align left in the field
- space
- prepend a space in front of positive numbers
- #
- use "alternate" format. Add 0 or 0x for octal or
hexadecimal numbers. Don't suppress trailing zeroes in general
floating point format.
- an integer denoting field width (optional)
- a period followed by an integer denoting precision
(optional)
- a format descriptor (required)
- f
- floating point number in fixed format
- e, E
- floating point number in exponential notation (scientific
format). The E format results in an uppercase E for the
exponent (1.14130E+003), the e format in a lowercase e.
- g, G
- floating point number in general format (fixed format for
small numbers, exponential format for large numbers). Trailing
zeroes are suppressed. The G format results in an uppercase E
for the exponent (if any), the g format in a lowercase e.
- d, i
- integer in decimal
- x
- integer in hexadecimal
- o
- integer in octal
- s
- string
- c
- character
- Throws:
IllegalArgumentException
- if bad format
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