The constructor is passed a parameter that contains a reference to the Controller as an argument, which will be stored as a private variable for future use. Because the WelcomeScreen extends the List object, the superclass must be called for instantiation. The parameters passed are the title of the screen and the type of list. The list types that you can use are shown in Table 1. Neither checkboxes nor radio buttons are visible next to each item in a list.
Users can select only one item from the list.
Similar to an HTML Option list. The WelcomeScreen also contains a ticker that generates a simple welcome message to the user. Events are generated on user actions, such as clicking the soft-key menu buttons on a Sreen or selecting items from a List . The first step involves retrieving the list from the display, which in this example is done through the Controller interface. The selected item can be retrieved from the list to allow the application to perform logical operations to determine the proper course of action.