Swing II - Java - page 972

Display 18.4 Using Icons (part 2 of 3)

18 public static void main(String[] args)

19 {

20 IconDemo iconGui = new IconDemo();

21 iconGui.setVisible(true);

22 }

23 public IconDemo()

24 {

25 super ("Icon Demonstration");

26 setSize(WIDTH, HEIGHT);

27 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

28 setBackground(Color.WHITE);

29 setLayout( new BorderLayout());

30 JLabel dukeLabel = new JLabel("Mood check");

31 ImageIcon dukeIcon = new ImageIcon("duke_waving.gif");

32 dukeLabel.setIcon(dukeIcon);

33 add(dukeLabel, BorderLayout.NORTH);

34 JPanel buttonPanel = new JPanel();

35 buttonPanel.setLayout( new FlowLayout());

36 JButton happyButton = new JButton("Happy");

37 ImageIcon happyIcon = new ImageIcon("smiley.gif");

38 happyButton.setIcon(happyIcon);

39 happyButton.addActionListener( this );

40 buttonPanel.add(happyButton);

41 JButton sadButton = new JButton("Sad");

42 ImageIcon sadIcon = new ImageIcon("sad.gif");

43 sadButton.setIcon(sadIcon);

44 sadButton.addActionListener( this );

45 buttonPanel.add(sadButton);

46 add(buttonPanel, BorderLayout.SOUTH);

47 message = new JTextField(TEXT_FIELD_SIZE);

48 add(message, BorderLayout.CENTER);

49 }

50 public void actionPerformed(ActionEvent e)

51 {

52 String actionCommand = e.getActionCommand();