(Temperature Conversion) Write a temperature-conversion application that converts from Fahrenheit to Celsius. The Fahrenheit temperature should be entered from the keyboard (via a JTextField). A JLabel should be used to display the converted temperature. Use the following formula for the conversion:

(Temperature-Conversion Modification) Enhance the temperature-conversion application of Exercise 14.12 by adding the Kelvin temperature scale. The application should also allow the user to make conversions between any two scales. Use the following formula for the conversion between Kelvin and Celsius (in addition to the formula in Exercise 14.12):

Kelvin = Celsius + 273.15

(Guess-the-Number Game) Write an application that plays “guess the number” as follows: Your application chooses the number to be guessed by selecting an integer at random in the range 1–1000. The application then displays the following in a label:

I have a number between 1 and 1000. Can you guess my number?
Please enter your first guess.

(Displaying Events) It’s often useful to display the events that occur during the execution of an application. This can help you understand when the events occur and how they’re generated. Write an application that enables the user to generate and process every event discussed in this chapter. The application should provide methods from the ActionListener, ItemListener, ListSelectionListener, MouseListener, MouseMotionListener and KeyListener interfaces to display messages when the events occur. Use method toString to convert the event objects received in each event handler into Strings that can be displayed. Method toString creates a String containing all the information in the event object.

(GUI-Based Craps Game) Modify the application of Section 6.10 to provide a GUI that enables the user to click a JButton to roll the dice. The application should also display four JLabels and four JTextFields, with one JLabel for each JTextField. The JTextFields should be used to display the values of each die and the sum of the dice after each roll. The point should be displayed in the fourth JTextField when the user does not win or lose on the first roll and should continue to be displayed until the game is lost.

(Interactive Drawing Application) In this exercise, you’ll implement a GUI application that uses the MyShape hierarchy from GUI and Graphics Case Study Exercise 10.2 to create an interactive drawing application. You’ll create two classes for the GUI and provide a test class that launches the application. The classes of the MyShape hierarchy require no additional changes.

Class DrawPanel should also declare the following methods:

Methods clearLastShape and clearDrawing should call repaint (inherited from JPanel) to refresh the drawing on the DrawPanel by indicating that the system should call method paintComponent.

Class DrawPanel should also provide event handling to enable the user to draw with the mouse. Create a single inner class that both extends MouseAdapter and implements MouseMotionListener to handle all mouse events in one class.

In the inner class, override method mousePressed so that it assigns currentShape a new shape of the type specified by shapeType and initializes both points to the mouse position. Next, override method mouseReleased to finish drawing the current shape and place it in the array. Set the second point of currentShape to the current mouse position and add currentShape to the array. Instance variable shapeCount determines the insertion index. Set currentShape to null and call method repaint to update the drawing with the new shape.

Override method mouseMoved to set the text of the statusLabel so that it displays the mouse coordinates—this will update the label with the coordinates every time the user moves (but does not drag) the mouse within the DrawPanel. Next, override method mouseDragged so that it sets the second point of the currentShape to the current mouse position and calls method repaint. This will allow the user to see the shape while dragging the mouse. Also, update the JLabel in mouseDragged with the current position of the mouse.

Create a constructor for DrawPanel that has a single JLabel parameter. In the constructor, initialize statusLabel with the value passed to the parameter. Also initialize array shapes with 100 entries, shapeCount to 0, shapeType to the value that represents a line, currentShape to null and currentColor to Color.BLACK. The constructor should then set the background color of the DrawPanel to Color.WHITE and register the MouseListener and MouseMotionListener so the JPanel properly handles mouse events.

Next, create a JFrame subclass called DrawFrame that provides a GUI that enables the user to control various aspects of drawing. For the layout of the DrawFrame, we recommend a BorderLayout, with the components in the NORTH region, the main drawing panel in the CENTER region, and a status bar in the SOUTH region, as in Fig. 14.49. In the top panel, create the components listed below. Each component’s event handler should call the appropriate method in class DrawPanel.

Declare and create the interface components in DrawFrame’s constructor. You’ll need to create the status bar JLabel before you create the DrawPanel, so you can pass the JLabel as an argument to DrawPanel’s constructor. Finally, create a test class that initializes and displays the DrawFrame to execute the application.

(GUI-Based Version of the ATM Case Study) Reimplement the ATM Case Study of Chapters 12–13 as a GUI-based application. Use GUI components to approximate the ATM user interface shown in Fig. 12.1. For the cash dispenser and the deposit slot use JButtons labeled Remove Cash and Insert Envelope. This will enable the application to receive events indicating when the user takes the cash and inserts a deposit envelope, respectively.