How can I use arrays to save records?

This project is to users at most can save 20 country names and country codes. I want to know what are the following steps to use arrays to save the country names and country codes?

public static void storeCountry code() {

         for(int i=0; i<=19; i++) {
         System.out.println("Add country name:");
         Scanner input = new Scanner (System.in);
         String countryName = input.nextLine();
}