_fileChooser.addChoosableFileFilter(new GenericFileFilter("filetype.kml", new String[] {"kml"}));
_fileChooser.addChoosableFileFilter(new GenericFileFilter("filetype.kmz", new String[] {"kmz"}));
_fileChooser.setAcceptAllFileFilterUsed(true);
_fileChooser.addChoosableFileFilter(new GenericFileFilter("filetype.kml", new String[] {"kml"}));
_fileChooser.addChoosableFileFilter(new GenericFileFilter("filetype.kmz", new String[] {"kmz"}));
_fileChooser.setAcceptAllFileFilterUsed(true);