Using java.util.Properties in Servlet to save User Preferences

import java.util.Properties;

String propertiesFileName = "my_properties.txt";

SAVE PREFERENCES:

Properties unsavedProperties = new Properties();

unsavedProperties.setProperty("my_name", "Uki");

OutputStream propOut = new FileOutputStream(new File(propertiesFileName));

unsavedProperties.store(propOut, "My Server properties");

LATER READ THE SAVED PREFERENCES:

InputStream inStream = new FileInputStream(propertiesFileName);

Properties savedPropeties = new Properties();

savedPropeties.load(inStream);

String myName = savedPropeties.getProperty("my_name");