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Anagram search from a file

// All the words are in the file Dictionary.txt

import java.io.*;
import java.util.*;
public class Anag
{
    static String[] words;
    public static void main(String args[]) throws IOException
    {
        Hashtable<String, List> ht;
        try {
            FileInputStream fstream = new FileInputStream("Dictionary.txt");
            DataInputStream in = new DataInputStream(fstream);
            BufferedReader br = new BufferedReader(new InputStreamReader(in));
            List<String> lines = new ArrayList<String>();
            String ele;
            while ((ele = br.readLine()) != null)
                lines.add(ele);
            words = lines.toArray(new String[lines.size()]);
            in.close();
        } catch (Exception e) {
            System.err.println("Error: " + e.getMessage());
        }
        ht = getAnagrams();
        BufferedReader br1 = new BufferedReader(new InputStreamReader(System.in));
        System.out.print("Enter key number:");
        String wd = br1.readLine();
        char[] chars = wd.toCharArray();
        Arrays.sort(chars);
        String key = String.valueOf(chars);
        System.out.println(ht.get(key));
    }

    public static Hashtable<String, List> getAnagrams() {
        Hashtable<String, List> ht = new Hashtable<String, List>();
        Set<String> hasAnagram = new HashSet<String>();
        for (String wd : words) {
            if (wd.length() <= 1)
                continue;
            // sort the characters in this word
            char[] chars = wd.toCharArray();
            Arrays.sort(chars);
            String anaKey = String.valueOf(chars);
            // update the list of anagrams
            List<String> anagramList = null;
            if (ht.containsKey(anaKey)) {
                anagramList = ht.get(anaKey);
                hasAnagram.add(anaKey);
            }
            if (anagramList == null) {
                anagramList = new ArrayList<String>();
                anagramList.add(wd);
                ht.put(anaKey, anagramList);
            }
            if (!anagramList.contains(wd)) {
                anagramList.add(wd);
            }
        }
        return ht;
    }
}

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