Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

public class Main {
    /**
     * Calculates the distance between two locations in KM
     */
    public static double checkDistance(double lat1, double lng1, double lat2, double lng2) {
        double earthRadius = 6371;

        double dLat = Math.toRadians(lat2 - lat1);
        double dLng = Math.toRadians(lng2 - lng1);

        double sindLat = Math.sin(dLat / 2);
        double sindLng = Math.sin(dLng / 2);

        double a = Math.pow(sindLat, 2)
                + Math.pow(sindLng, 2) * Math.cos(Math.toRadians(lat1)) * Math.cos(Math.toRadians(lat2));

        double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));

        double dist = earthRadius * c * 1000;

        return dist; // in meter
    }
}