code: public void setUserPassword(String password) {
  		try {
  			getSipURI().setUserPassword(password);
  		} catch (ParseException e) {
  			logger.error("error setting parameter ", e);
  			throw new IllegalArgumentException("Bad arg", e	);
  		}
  	}
docs: /*
  (non-Javadoc)
  @see javax.servlet.sip.SipURI#setUserPassword(java.lang.String)