Menus - An Introduction to Graphical User Interfaces with Java Swing - page 78

9.

private JLabel display;

10.

private JMenuItem testItem;

11.
12.

public MenuFrame() {

13.

display = new JLabel("No menu selected.",JLabel.CENTER);

14.
15.

// Create a menu bar and add it to the frame

16.
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JMenuBar menubar = new JMenuBar();

18.

this .setJMenuBar(menubar);

19.
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// Create and add the menus

21.

JMenu firstMenu = new JMenu("Menu 1");

22.

JMenu secondMenu = new JMenu("Menu 2");

23. menubar.add(firstMenu);

24. menubar.add(secondMenu);

25.
26.

// Create the menu items and add them to the menus

27. JMenuItem firstItem = new JMenuItem("Item 1");

28. testItem = new JMenuItem("Test");

29. JMenuItem exitItem = new JMenuItem("Exit");

30. JMenuItem enableItem = new JMenuItem("Enable Test");

31.

JMenuItem disableItem = new JMenuItem("Disable Test");

32.
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firstMenu.add(firstItem);

34.

firstMenu.add(testItem);

35.

firstMenu.addSeparator();

36.

firstMenu.add(exitItem);

37.
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secondMenu.add(enableItem);

39.

secondMenu.add(disableItem);

40.
41. // Create a listener and add it to the menu items

42.

MenuListener menuList = new MenuListener( this );

43.

firstItem.addActionListener(menuList);

44.

testItem.addActionListener(menuList);

45. exitItem.addActionListener(menuList);

46. enableItem.addActionListener(menuList);

47. disableItem.addActionListener(menuList);

48.
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// Add the label to the frame

50. this .getContentPane().add(display,BorderLayout.CENTER);

51. }

52.
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// Method to set the text in the label

54.

public void setText(String text){