It goes without saying that data is an integral part of nearly every useful application. Clok, our sample application, is no different. This chapter will cover various techniques for displaying data in your application—a process called data binding. Chapters 14, 15 and 16 will cover working with data from a variety of different sources, as well as different ways to save your data. To keep things simple in this chapter, however, we’re going to work with data that is stored in memory. This has the side effect of preventing our changes from persisting after we close the application, but I’ll address that in Chapter 14.