public static void main(String[] args) {
   try {
     AssociativeArray<Integer> ent = new AssociativeArray(20);
     p101queue<String> ref = new p101queue();
     File food = new File(args[0]);
     Scanner readf = new Scanner(food);
     while (readf.hasNextLine()) {
       String line = readf.nextLine();
       if (line.split(":")[0].equals("entrada")) {
         if (ent.exists(line.split(" ")[1]))
           ent.set(line.split(" ")[1], (Integer) ((int) (ent.get(line.split(" ")[1]) + 1)));
         else ent.set(line.split(" ")[1], 1);
       } else {
         ref.in(line.substring(7));
       }
       while (!ref.isEmpty()) {
         if (checkCanRemove(ref.peek(), ent)) {
           out.println("Refeição servida: " + ref.peek());
           ref.out();
         } else break;
       }
     }
     out.println("Comida em Stock:");
     for (String i : ent.keysToArray()) out.println("\t" + i + " : " + ent.get(i));
     while (!ref.isEmpty()) {
       out.println("Refeições não servidas: " + ref.peek());
       ref.out();
     }
   } catch (Throwable e) {
     err.println("Erro nos ficheiros.\n" + e.getMessage());
   }
 }