Анаграммы

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.net.URL;
import java.net.URLConnection;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
 
 
public class Main {
      public static void main(String[] args) {
        ///=============
          String line;
          List<String> words2 = null;
          String webnames = "http://www.puzzlers.org/pub/wordlists/unixdict.txt";
          try{
          URL url = new URL(webnames);
          URLConnection urlc = url.openConnection();
          BufferedReader buffer = new BufferedReader(new InputStreamReader(urlc.getInputStream(), "UTF8"));
          
          
          while (( line = buffer.readLine()) != null){
              words2.add(line);// error
              }
          buffer.close();
          }catch(Exception e){
              
          }
          //=================
//      List<String> words2 = Arrays.asList("pool", "loop", "stream", "arc",
//              "odor", "car", "rood", "meats", "fires", "fries",
//              "night", "thing", "mates", "teams");
 
        
        Map<String, Long> anagrams =
                words2.stream().collect(
                    Collectors.groupingBy(Main::sortChars, Collectors.counting()));
 
        System.out.println(anagrams);
}
      public static String sortChars(String input) {
            char[] characters = input.toCharArray();
            Arrays.sort(characters);
            return new String(characters);
        }
}

ArrayList<String> words=new ArrayList<>();