gis - Is there a method in Java for getting the circumference of a given latitude? -

the circumference of earth's latitudes vary per increase/decrease of latitude. searched around , found this page shows table of circumferences of earth on given latitude. there library or method can use on java?

it getcircumference(float latitude).

this function seems job:

public static double getcircumference(double lat) {     double earthdiameter = 6378.137;     double earthradiuspolar = 6356.752314;     double c = math.cos((lat/180.0) * math.pi);     c = c * earthdiameter;     c = math.pow(c, 2);     double s = math.sin((lat/180.0) * math.pi);     s = s * earthradiuspolar;     s = math.pow(s, 2);     double res = math.pow(c + s, 0.5);     res = math.pow(earthdiameter, 2) / res;     return 2 * math.pi * math.cos((lat/180.0) * math.pi) * res; } 

it's based on javascript on page , returns results on page linked to.