This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Welcome to the Ranch. The porperties are name-value pairs that can be accessed with the methods getProperties() and getProperty() from the class System. You can read about the class java.util.Properies in the Java Tutorial