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+import java.lang.Math;%0Aimport java.lang.Double;%0A%0Apublic class ZipDistCalc %7B%0A%0A%09//from: http://zips.sourceforge.net/%0A%09public static double calcDistance(double latA, double longA, double latB, double longB)%0A%09%7B%0A%09  double theDistance = (Math.sin(Math.toRadians(latA)) *%0A%09                        Math.sin(Math.toRadians(latB)) +%0A%09                        Math.cos(Math.toRadians(latA)) *%0A%09                        Math.cos(Math.toRadians(latB)) *%0A%09                        Math.cos(Math.toRadians(longA - longB)));%0A%0A%09  return  (Math.toDegrees(Math.acos(theDistance))) * 69.09;%0A%09%7D %0A%0A%7D%0A

Create ZipDistCalc.java