A singleton factory which creates and caches the
CSVFieldFormatter csv field formatters . The factory
maintains a cache of CSV formatters that are reentrant (i.e.,
the formatters that do not maintain any instance specific state).
author: Anupam Sengupta version: $Revision: 1.3 $ See Also:CSVFieldFormatter since: 1.5
Creates a new instance of the specified formatter. The cache is used
whenever possible.
Parameters: formatterName - the formatter to return the requested formatter throws: CSVOException - thrown if the formatter cannot be created