public void onPostalAddressUpdate(Source cv, String oldPostalAddress) { if (oldPostalAddress == null){ sourceChangeLogger.log(Level.INFO, "The postal address " + cv.getPostalAddress() + " has been added to the source " + cv.toString()); } else if (cv.getPostalAddress() == null){ sourceChangeLogger.log(Level.INFO, "The postal address " + oldPostalAddress + " has been removed from the source " + cv.toString()); } else { sourceChangeLogger.log(Level.INFO, "The postal address " + oldPostalAddress + " has been updated with " + cv.getPostalAddress() + " in the source " + cv.toString()); } }