code: public static double distance(LatLong latLong1, LatLong latLong2) {
          return Math.hypot(latLong1.longitude - latLong2.longitude, latLong1.latitude - latLong2.latitude);
      }
docs: Calculate the Euclidean distance between two LatLongs in degrees using the Pythagorean
  theorem.
  
  @param latLong1 first LatLong
  @param latLong2 second LatLong
  @return distance in degrees as a double