Set the file extensions which the dialog will
use to filter the files it shows to the argument,
which may be null.
<p>
The strings are platform specific. For example, on
some platforms, an extension filter string is typically
of the form "*.extension", where "*.*" matches all files.
For filters with multiple extensions, use semicolon as
a separator, e.g. "*.jpg;*.png".
</p>
@param extensions the file extension filter
@see #setFilterNames to specify the user-friendly
names corresponding to the extensions
Set the file extensions which the dialog will use to filter the files it shows to the argument, which may be null. <p> The strings are platform specific. For example, on some platforms, an extension filter string is typically of the form "*.extension", where "*.*" matches all files. For filters with multiple extensions, use semicolon as a separator, e.g. "*.jpg;*.png". </p>
@param extensions the file extension filter
@see #setFilterNames to specify the user-friendly names corresponding to the extensions