latitude longitude - How to test if a point inside area with lat/lon and radius using Java? -

i've write method has following signature

public class position { double longitude; double latitude; }  boolean isinsidethearea(position center, double radius, position point); 

so if point inside area has center center , radius radius in miles, should return true, false otherwise.

use haversine formula compute distance between center , point. if distance greater radius, return false; otherwise return true.

pseudocode:

def haversinedistance(a, b):     # snip...     return foo  def isinsidethearea (center, radius, point):     return haversinedistance(center, point) <= radius