public class readArgs {
  public static void main(String[] args) {
    
    for ( int i = 0; i < args.length; i++) {
      String word = args[i];
      System.out.println(word);
      
      for ( int j = word.length() - 1; j >= 0; j--) {
        char c = word.charAt(j);
        System.out.println("The character at position " + j + " is " + c);
        if (Character.isDigit(c) )
          System.out.println("It is a digit.");
        else if (Character.isLetter(c) )
          System.out.println("It is a letter.");
        else System.out.println("It is not a digit or a letter.");
      }
    }  
  }
}