Constructs a TIFFTag with a given name, tag number and TIFFTagSet to which it refers. The legal data types are set to include TIFF_LONG and TIFF_IFD_POINTER and the value count is unity. The TIFFTagSet will represent the set of TIFFTags which appear in the IFD pointed to. A TIFFTag represents an IFD pointer if and only if tagSet is non- null or the data type TIFF_IFD_POINTER is legal.

Parameters:

name		the name of the tag.
number		the number used to represent the tag.
tagSet		the TIFFTagSet to which this tag belongs.

Exceptions:

NullPointerException		if name or tagSet is null.
IllegalArgumentException		if number is negative.

See also:
TIFFTag(String, int, int, int)