code: public static int aton(final String ip)
  	{
  		try
  		{
  			return aton(InetAddress.getByName(ip));
  		}
  		catch (UnknownHostException e)
  		{
  			throw new IllegalArgumentException("must pass a valid ip. Illegal input was: " + ip, e);
  		}
  	}
docs: An equivalent of the C <code>inet_aton</code> function
  
  @param ip
  
  @return