java swing 中的組件

jigoo插件中的,
1,容器：JScrollPane  ,JSplitPane,JTabbedPane,JToolBar,JPanel,
      JWindow,JDialog,  JFrame  ，JDesktopPane, JInternalFrame
     
     
2,組件：JButton,JRadioButton, ButtonGroup, JCheckBox,JToggleButton,JComboBox,JSpinner,JLabel,
      JTextField,JEditorPane, JTextArea, JTextPane,JList, JProgressBar,JTable,JTree, Canvas,
      JSeparator,
     
3,其他組件： JFormattedTextArea,JPasswordFiled,JScrollBar,JSlider,JOptionPane,JColorChooser,JFileChooser
 
4,菜單組件：JMenuBar,JMenu,JCheckBoxMenuItem,JRadioButtonMenuItem,JMenuItem,JSeparator,JPopupMenu
 
5,佈局組件： AbsoluteLayout,AnchorLayout,BorderLayout,BOX Layout-X ,BOX Layout-Y,CardLayout,FlowLayout,
            FormLayout,GridLayout,GridBagLayout,TableLayout
           

JOptionPane.showConfirmDialog

Toolkit toolkit = Toolkit.getDefaultToolkit();

Clipboard clipboard = toolkit.getSystemClipboard();// 剪貼板對象

JFileChooser

剖析：JFrame
JFrame  extends Frame implements WindowConstants, Accessible, RootPaneContainer

interface RootPaneContainer
    JRootPane getRootPane();

JFrame 裏面的重要方法：
setJMenuBar，
add
getContentPane().add(toolBar, BorderLayout.NORTH);