Constructs a new formatter with the specified file, charset, and locale.

Parameters:

file		The file to use as the destination of this formatter. If the file exists then it will be truncated to zero size; otherwise, a new file will be created. The output will be written to the file and is buffered.
charset		A charset
l		The locale to apply during formatting. If l is null then no localization is applied.

Exceptions:

IOException		if an I/O error occurs while opening or creating the file
SecurityException		If a security manager is present and checkWrite(file.getPath()) denies write access to the file
NullPointerException		if file or charset is null.