24. Menus and Actions

• To create a menu,

  1. Create a menu bar

  2. Add top-level menus

  3. Add menu items to each of the top-level menus.

  
      JMenu mHelp;
      JMenuItem mHelpAbout;
  
      mBar = new JMenuBar();     // menu bar
      this.setJMenuBar(mBar);    // add to JFrame
      mHelp = new JMenu("Help"); // top-level menu
      mBar.add(mHelp);           // add to menu bar
  
      mHelpAbout = new JMenuItem("About");
      mHelp.add(mHelpAbout);     // sub-menu