Once your version of Credits works like the one shown in Listing 6.2, give yourself some credit, too. You're writing longer Java programs and dealing with more sophisticated issues each hour. Like variables, strings are something you'll use every time you sit down to write a program.
At the beginning of The Piano, Ada lost her piano when her new husband refused to make his Maori laborers carry it home. Luckily for you, the ability to use strings in your Java programs cannot be taken away by an insensitive newlywed, or anyone else. You'll be using strings in many ways to communicate with users.