import java.io.*;
import java.util.*;
// Rhys Price Jones October 2005
// Demonstates some cool new Java 1.5 features
// Scanner for input
// auto boxing-unboxing for int-Integer
// generics to make a HashMap<String, Integer>
// enhanced for-loop to go through the whole HashMap

public class CountWords {
    final static int HASHSIZE = 20000;
    public static void main(String[] args) {
        if (args.length < 1) {
            System.err.println("I need a file");
            System.exit(-1);
        }
        Scanner sc = null;
        try {sc = new Scanner(new File(args[0]));}
        catch(FileNotFoundException fnfe) {
            System.err.println("No such file");
            System.exit(-1);
        }
        String s;
        Map <String, Integer> c = new HashMap<String, Integer>(HASHSIZE);
        while (sc.hasNext()) {
            s = (sc.next()).toLowerCase();
            if (c.get(s) == null) c.put(s,1);  // auto boxing
            else c.put(s, 1+c.get(s));         // auto boxing-unboxing
        }
        for (String key : c.keySet()) {
            System.out.println(key+" appears "+c.get(key)+" times");
        }
    }
}