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CHAPTER 1 GRAPHICAL USER INTERFACE (1.2 Frame Windows and Menu Bars (A…

- - - - THE METHODS
        
        setDefaultCloseOperation()
        
        setSize()
        
        setVisible()
        
        setLocation(x,y)
        
        Syntax Frame f = new TestFrame("TestFrame");
        
        Frame Location setLocation(x, y) method in the JFrame class or
        setBounds(x, y, width, height)
      - FRAME
  - - - A Menu Bar displays a list of top-level menu choices
        
        Create Menu Bar in Java Programs
        
        //display fileMenu.add(newAction);
        fileMenu.add(openAction);
        fileMenu.add(exitAction);
        
        // Create and add simple menu item to one of the drop down menuMenuItem newAction = new MenuItem("New");MenuItem openAction = new MenuItem("Open");MenuItem exitAction = new MenuItem("Exit");
        
        // Define and add two drop down menu to the menubarMenu fileMenu = new Menu("File");
        Menu editMenu = new Menu("Edit");menuBar.add(fileMenu);menuBar.add(editMenu);
        
        MenuBar menuBar = new MenuBar();// Add the menubar to the frame setMenuBar(menuBar);
        
        This concept is implemented in Java by the following classes
        
        • MenuBar
        
        • Menu
        
        • MenuItem
  - - - WRITE A PANEL (STEP BY
        STEP)
        
        1.Create Frame
        Frame mainFrame = new Frame("Java AWT Examples");
        2.. Set layout for Frame
        mainFrame.setLayout(new GridLayout(3, 1));
        3.Create Panel
        controlPanel = new Panel();
        
        Set layout for Panel
        controlPanel.setLayout(new FlowLayout());
        
        Add Panel to Frame
        mainFrame.add(controlPanel);
    - - Component
        Button
        Checkbox
        Label
        List
        Choice
        TextComponent
        TextArea
        TextField
- - - - Platform-dependent
        
        components are displayed according to the view of operating system.
      - Heavyweight
        
        its components uses the resources of system.
    - - Container
        
        Container is an abstract subclass of Component, which allows other components to be nested inside it.
      - Panel
        
        A Panel is a simplest Container whose primary purpose is to subdivide the drawing area into separate rectangular pieces.
      - Window
        
        A Window object is a top-level window. It does not have borders and menubar.
      - Frame
        
        A Frame is a top-level window with a title and a
        border.
        
        two ways to create a Frame
        
        By Instantiating Frame class
        
        By extending Frame class
      - Dialog
        
        It can be moved but often can't be resized .Its purpose is to get some particular information from the user (input) or to impart some particularly important information to the user (output) .
      - Applet
        
        Applet is any small application that performs one specific task that runs within the scope of a larger program, often as a plug-in.
    - - public void add(Component c)
      - public void setSize(int width,int height)
      - public void setLayout(LayoutManager m)
      - public void setVisible(boolean status)