code: import java.net.*;
  import java.io.*;
  import java.util.*;
  
  public class WordsOfEqChars {
      public static void main(String[] args) throws IOException {
          URL url = new URL("http://wiki.puzzlers.org/pub/wordlists/unixdict.txt");
          InputStreamReader isr = new InputStreamReader(url.openStream());
          BufferedReader reader = new BufferedReader(isr);
  
          Map<String, Collection<String>> anagrams = new HashMap<String, Collection<String>>();
          String word;
          int count = 0;
          while ((word = reader.readLine()) != null) {
              char[] chars = word.toCharArray();
              Arrays.sort(chars);
              String key = new String(chars);
              if (!anagrams.containsKey(key))
                  anagrams.put(key, new ArrayList<String>());
              anagrams.get(key).add(word);
              count = Math.max(count, anagrams.get(key).size());
          }
  
          reader.close();
  
          for (Collection<String> ana : anagrams.values())
              if (ana.size() >= count)
                  System.out.println(ana);
      }
  }
  