import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class StreamDemo
{
   public static void main(String[] args) throws IOException
   {
      Scanner in = new Scanner(new File("../countries.txt"));
         // This file contains one country name per line
      List<String> wordList = new ArrayList<>();
      while (in.hasNextLine()) { wordList.add(in.nextLine()); }
         // Now wordList is a list of country names

      // Traditional loop for counting the long words
      long count = 0;
      for (String w : wordList)
      {
         if (w.length() > 10) { count++; }
      }
      
      System.out.println("Long words: " + count);

      // The same computation with streams
      count = wordList.stream()
         .filter(w -> w.length() > 10)
         .count();

      System.out.println("Long words: " + count);
   }
}