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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. import java.util.Locale;
  8.  
  9. class Ideone {
  10.  
  11.  
  12.     public static void main(String[] args) {
  13.  
  14.  
  15.         String[] iso3Countries = getISO3CountryCodes();
  16.  
  17.  String[] checkForCountries = {"ZWG","GLB","SIL","ANT","GPL"};
  18.         for (String iso3Country : iso3Countries) 
  19.  
  20.    if(Arrays.asList(checkForCountries).contains(iso3Country)){
  21.             System.out.println(iso3Country);
  22.  
  23.  
  24.         }
  25.  
  26.  
  27.     }
  28.  
  29.     // https://stackoverflow.com/questions/63005056/iso-3-letter-country-code-validation-in-java
  30.  
  31.     public static String[] getISO3CountryCodes() {
  32.  
  33.  
  34.         String[] countries = Locale.getISOCountries();
  35.  
  36.  
  37.         String[] iso3 = new String[countries.length];
  38.  
  39.  
  40.         for (int i = 0; i < countries.length; i++) {
  41.  
  42.  
  43.             Locale locale = new Locale("", countries[i]);
  44.  
  45.  
  46.             iso3[i] = locale.getISO3Country();
  47.  
  48.  
  49.         }
  50.  
  51.  
  52.         return iso3;
  53.  
  54.  
  55.     }
  56.  
  57. }
  58.  
  59.  
Success #stdin #stdout 0.08s 32732KB
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stdout 
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https://ideone.com/rEUclG
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
public

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