Small Java class for calculating the distance between two points using the Haversine formula.
public static double distance(double startLat, double startLong,
double endLat, double endLong)
Call in a static context:
Haversine.distance(47.6788206, -122.3271205,
47.6788206, -122.5271205)
// -> 14.973190481586224 [km]