src/Country.java

   1 public class Country {
   2     private String name;
   3     private String region;
   4     private double lat;
   5     private double lng;
   6     private String flag;
   7
   8     public Country(String name, String region, double lat, double lng, String flag) {
   9         setName(name);
  10         setRegion(region);
  11         setLat(lat);
  12         setLng(lng);
  13         setFlag(flag);
  14     }
  15
  16     public void setName(String name) {
  17         this.name = name;
  18     }
  19
  20     public String getName() {
  21         return name;
  22     }
  23
  24     public void setRegion(String region) {
  25         this.region = region;
  26     }
  27
  28     public void setLat(double lat) {
  29         this.lat = lat;
  30     }
  31
  32     public double getLat() {
  33         return lat;
  34     }
  35
  36     public void setLng(double lng) {
  37         this.lng = lng;
  38     }
  39
  40     public double getLng() {
  41         return lng;
  42     }
  43
  44     public void setFlag(String flag) {
  45         this.flag = flag;
  46     }
  47
  48     public String getFlag() {
  49         return flag;
  50     }
  51
  52     public int distanceTo(Country country) {
  53         if ((this.lat == country.lat) && (this.lng == country.lng)) {
  54             return 0;
  55         } else {
  56             double theta = this.lng - country.lng;
  57             Double dist = Math.sin(Math.toRadians(this.lat)) * Math.sin(Math.toRadians(country.lat)) + Math.cos(Math.toRadians(this.lat)) * Math.cos(Math.toRadians(country.lat)) * Math.cos(Math.toRadians(theta));
  58             dist = Math.acos(dist);
  59             dist = Math.toDegrees(dist);
  60             dist = dist * 60 * 1.1515;
  61             // Kilometers
  62             dist = dist * 1.609344;
  63             return dist.intValue();
  64         }
  65     }
  66
  67     @Override
  68     public String toString() {
  69         return "Country{" +
  70                 "name='" + name + '\'' +
  71                 ", region='" + region + '\'' +
  72                 ", lat=" + lat +
  73                 ", lng=" + lng +
  74                 ", flag=" + flag +
  75                 '}';
  76     }
  77 }