Solution for problem on ClassCube Moodle demo site https://moodle.classcube.com

VowelCounter.java

import java.io.*;
import java.util.*;

public class VowelCounter {
    
    public static void main( String[] args ) {
        // Your code goes here...
        int cnt = 0;
        try {
            Scanner f = new Scanner(new File("words.dat"));
            
            while (f.hasNext()) {
                for(String s:f.next().split("")) {
                    if (s.matches("[aeiou]")) {
                        cnt++;
                    }
                }
            }
            System.out.println(cnt);
        }
        catch (Exception e) {
            System.out.println("Cannot find file"); 
        }
        
         
    }
}