// Variation of CountWords that prompts for a file name.

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

public class CountWords2 {
    public static void main(String[] args)
            throws FileNotFoundException {
        Scanner console = new Scanner(System.in);
        Scanner input = getInput(console);

        // and count words
        int count = 0;
        while (input.hasNext()) {
            String word = input.next();
            count++;
        }
        System.out.println("total words = " + count);
    }

    // Prompts the user for a legal file name; creates and
    // returns a Scanner tied to the file
    public static Scanner getInput(Scanner console)
            throws FileNotFoundException {
        System.out.print("input file name? ");
        File f = new File(console.nextLine());
        while (!f.canRead()) {
            System.out.println("File not found.  Try again.");
            System.out.print("input file name? ");
            f = new File(console.nextLine());
        }
        // now we know that f is a file that can be read
        return new Scanner(f);
    }
}