src/Country.java

   1 import java.io.File;
   2 import java.io.FileNotFoundException;
   3 import java.util.List;
   4 import java.util.Scanner;
   5
   6 public class Country {
   7     private String name;
   8     private String region;
   9     private double lat;
  10     private double lng;
  11     private String flag;
  12     private String csvFile = "data/countries.csv";
  13
  14     public Country() {
  15     }
  16
  17     public Country(String name) {
  18         setName(name);
  19         initCountryFromCSV(name);
  20     }
  21
  22     public Country(String name, String region, double lat, double lng, String flag) {
  23         setName(name);
  24         setRegion(region);
  25         setLat(lat);
  26         setLng(lng);
  27         setFlag(flag);
  28     }
  29
  30     public String getName() {
  31         return name;
  32     }
  33
  34     public void setName(String name) {
  35         this.name = name;
  36     }
  37
  38     public void setRegion(String region) {
  39         this.region = region;
  40     }
  41
  42     public double getLat() {
  43         return lat;
  44     }
  45
  46     public void setLat(double lat) {
  47         this.lat = lat;
  48     }
  49
  50     public double getLng() {
  51         return lng;
  52     }
  53
  54     public void setLng(double lng) {
  55         this.lng = lng;
  56     }
  57
  58     public String getFlag() {
  59         return flag;
  60     }
  61
  62     public void setFlag(String flag) {
  63         this.flag = flag;
  64     }
  65
  66     public int distanceTo(Country country) {
  67         if ((this.getLat() == country.getLat()) && (this.getLng() == country.getLng())) {
  68             return 0;
  69         } else {
  70             double theta = this.getLng() - country.getLng();
  71             Double dist = Math.sin(Math.toRadians(this.getLat())) * Math.sin(Math.toRadians(country.getLat())) +
  72                     Math.cos(Math.toRadians(this.getLat())) * Math.cos(Math.toRadians(country.getLat())) *
  73                             Math.cos(Math.toRadians(theta));
  74             dist = Math.acos(dist);
  75             dist = Math.toDegrees(dist);
  76             dist = dist * 60 * 1.1515;
  77             // Kilometers
  78             dist = dist * 1.609344;
  79             return dist.intValue();
  80         }
  81     }
  82
  83     private void initCountryFromCSV(String name) {
  84         Scanner scanner = null;
  85         try {
  86             scanner = new Scanner(new File(csvFile));
  87         } catch (FileNotFoundException e) {
  88             e.printStackTrace();
  89         }
  90         boolean found = false;
  91         while (scanner.hasNext()) {
  92             List<String> line = CSVUtils.parseLine(scanner.nextLine());
  93             String countryList = line.get(0);
  94             String[] countryArray = countryList.split(",");
  95             String latLng = line.get(16);
  96             String[] latLngArray = latLng.split(",");
  97             if (countryArray[0].equals(name)) {
  98                 found = true;
  99                 setRegion(line.get(12));
 100                 setLat(Double.parseDouble(latLngArray[0]));
 101                 setLng(Double.parseDouble(latLngArray[1]));
 102                 setFlag(line.get(21));
 103                 break;
 104             }
 105         }
 106         if (!found)
 107             System.out.println("Country " + name + " not found");
 108         scanner.close();
 109     }
 110
 111     @Override
 112     public String toString() {
 113         return "Country{" +
 114                 "name='" + name + '\'' +
 115                 ", region='" + region + '\'' +
 116                 ", lat=" + lat +
 117                 ", lng=" + lng +
 118                 ", flag=" + flag +
 119                 '}';
 120     }
 121 }