Inheritance - Java Concepts - page 661

33 final int FIELD_WIDTH = 10 ;
34 rateField = new JTextField(FIELD_WIDTH);
35 rateField.setText( ÐÑ + DEFAULT_RATE);
36 }
37
38 private void createButton()
39 {
40 button = new JButton( ÐAdd InterestÑ );
41
42 class AddInterestListener implements
ActionListener
43 {
44 public void
actionPerformed(ActionEvent event)
45 {
46 double rate = Double.parseDouble(
47 rateField.getText());
48 double interest =
account.getBalance()
49 * rate / 100 ;
50 account.deposit(interest);
51 resultLabel.setText(
52 Ðbalance: Ñ +
account.getBalance());
53 }
54 }
55
56 ActionListener listener = new
AddInterestListener();
57 button.addActionListener(listener);
58 }
59
60 private void createPanel()
61 {
62 panel = new JPanel();
63 panel.add(rateLabel);
64 panel.add(rateField);
65 panel.add(button);
66 panel.add(resultLabel);
67 add(panel);
68 }
69
70 private JLabel rateLabel;
71 private JTextField rateField;
72 private JButton button;