Using hashtables to count the number of occurence of a word

import java.io.*;
import java.util.*;
 
public class WordFrequency {
	public static void main(String[] args) throws IOException {
		WordFrequency test = new WordFrequency();
		test.countWordFre();
 
	}
 
	public void countWordFre() throws IOException {
		Scanner in = new Scanner(new FileInputStream("in.txt"));
		PrintWriter out = new PrintWriter(new FileOutputStream("out.txt"));
		Hashtable map = new Hashtable();
		String line = in.nextLine();
		String word;
		StringTokenizer st = new StringTokenizer(line);
		while (st.hasMoreTokens()) {
			word = st.nextToken().toLowerCase();
			if (map.containsKey(word)) {
				int count = (Integer) map.get(word);
				map.put(word, count + 1);
			} else {
				map.put(word, 1);
			}
 
		}
       word=in.nextLine();
		Enumeration<String> e = map.keys();
		while (e.hasMoreElements()) {
			 word =e.nextElement();
			out.println(word + " " + map.get(word));
		}
 
		out.println(map.size());
		out.println(map.isEmpty());
		out.close();
	}
}