Sets the directory path that the dialog will use
to the argument, which may be null. File names in this
path will appear in the dialog, filtered according
to the filter extensions. If the string is null,
then the operating system's default filter path
will be used.
<p>
Note that the path string is platform dependent.
For convenience, either '/' or '\' can be used
as a path separator.
</p>
Sets the directory path that the dialog will use to the argument, which may be null. File names in this path will appear in the dialog, filtered according to the filter extensions. If the string is null, then the operating system's default filter path will be used. <p> Note that the path string is platform dependent. For convenience, either '/' or '\' can be used as a path separator. </p>
@param string the directory path
@see #setFilterExtensions