### Question:
UtmConverter { public static char utmBand(double lat) { return (-80 <= lat && lat <= 84) ? UTM_BAND_CHARS.charAt((int)(lat + 80) / 8) : 'Z'; } private  UtmConverter(); static UtmCoordinate toUtm(GeoCoordinate coordinate); static GeoCoordinate toLatLon(double easting, double northing, int zone, boolean southHemi); static int utmZone(GeoCoordinate coordinate); static char utmBand(double lat); static GeoCoordinate gridZoneToLatLon(String gridZone);  }### Answer:
@Test public void testUtmBand() { assertEquals('C', UtmConverter.utmBand(-75)); assertEquals('K', UtmConverter.utmBand(-23)); assertEquals('J', UtmConverter.utmBand(-31)); }