Java™ How to Program, Seventh Edition

11.4. Displaying Text and Images in a Window

Our next example introduces a framework for building GUI applications. This framework uses several concepts that you will see in many of our GUI applications. This is our first example in which the application appears in its own window. Most windows you will create are an instance of class JFrame or a subclass of JFrame. JFrame provides the basic attributes and behaviors of a window—a title bar at the top of the window, and buttons to minimize, maximize and close the window. Since an application’s GUI is typically specific to the application, most of our examples will consist of two classes—a subclass of JFrame that helps us demonstrate new GUI concepts and an application class in which main creates ...