handler hash code

handler_hash.java

  protected synchronized InetAddress getHostAddress(URL u) {
           if (u.hostAddress != null)
               return u.hostAddress;
   
           String host = u.getHost();
           if (host == null || host.equals("")) {
               return null;
           } else {
               try {
                   u.hostAddress = InetAddress.getByName(host);
               } catch (UnknownHostException ex) {
                   return null;
               } catch (SecurityException se) {
                   return null;
               }
           }
           return u.hostAddress;
  }