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.
That is, most likely, a parameter that is replaced dynamically. It's pretty common to define resources like this in a .properties file, retrieve them using a PropertyResourceBundle and then us the MessageFormat (<-click) class to replace the parameters with desired String fragments.
Build a man a fire, and he'll be warm for a day. Set a man on fire, and he'll be warm for the rest of his life.