SWING的图形介面元件.ppt

1、SWING的圖形介面元件,JLabel,JLabel label = new JLabel(關閉); JLabel label1 = new JLabel( new ImageIcon(tree.jpg); JLabel(String,int), JLabel(ImageIcon, int) JLabel.LEFT JLabel.RIGHT JLabel.CENTER JLabel.LEADING JLabel.TRAILING,JButton,JButton button1 = new JButton(切換(Alt_S); JButton button2 = new JButton( new

2、 ImageIcon(yellow.gif); button1.addActionListener(new ActionListener() public void actionPerformed(ActionEvent evt) / 切換標題的文字內容 if ( flag = 0 ) label.setText(開啟); else label.setText(關閉); flag = 1 - flag; );,JCheckBox,greenBox = new JCheckBox(綠色(G); greenBox.setMnemonic(KeyEvent.VK_G); greenBox.setSe

3、lected(true); greenBox.addItemListener(this); Ch11_1_2,JRadio,ButtonGroup() add() remove() JRadionButton() setMnemoic() setSelected(boolean) addItemListener(ItemListener) removeItemListener() CH11_1_3,JComboBox,String items = 程式語言, 計算機概論, 資料庫系統, 網頁設計; JComboBox list = new JComboBox(items); Ch11_1_4,

4、JList,String names = 陳會安, 江小魚, 小龍女, 張三丰; dlistModel = new DefaultListModel(); for (int i = 0; i names.length; i+) dlistModel.addElement(namesi); / 新增元素 nameList = new JList(dlistModel); Ch11_1_5,JScroll,JScrollBar() JScrollBar(int) JScrollBar(int,int,int,int,int) s1=new JScrollBar(JScrollBar.VERTICA

5、L,50,10,0,100);,JSlider,JSlider() JSlider(int) JSlider(int,int) JSlider(int,int,int) JSlider(int,int,int,int) Ch11_1_6,JTextComponent,JTextField and JPasswordField JTextField text = new JTextField(12); JPasswordField password = new JPasswordField(12); Ch_2_1,JTextArea,JTextArea() JTextArea(String) J

6、TextArea(int,int) JTextArea(String,int,int) area = new JTextArea(等待輸入資料.n, 15, 30); JScrollPane scroll = new JScrollPane(area); Ch11_2_2,JPopupMenu,popup = new JPopupMenu(); popup.add(blue = new JMenuItem(藍色); blue.addActionListener(this); popup.add(yellow = new JMenuItem(黃色); yellow.addActionListen

7、er(this); popup.add(green = new JMenuItem(綠色); green.addActionListener(this);,JPopupMenu,addMouseListener(new MouseAdapter() public void mousePressed(MouseEvent evt) if ( evt.isPopupTrigger() ) / 顯示選單 popup.show(evt.getComponent(), evt.getX(), evt.getY(); public void mouseReleased(MouseEvent evt) if

8、 ( evt.isPopupTrigger() ) / 顯示選單 popup.show(evt.getComponent(), evt.getX(), evt.getY(); ); Ch11_3_1,JMenuBar,JMenuBar jmb = new JMenuBar(); setJMenuBar(jmb); / 新增下拉式功能表,JMenu,JMenu file = new JMenu(檔案(F); file.setMnemonic(KeyEvent.VK_F); JMenuItem item; file.add(item = new JMenuItem(新增(N),KeyEvent.V

9、K_N); file.add(item = new JMenuItem(開啟(O),KeyEvent.VK_O); JMenu setting = new JMenu(“參數設定”); / 子選單 file.add(setting); / 新增子選單 file.addSeparator(); / 分隔線 file.add(item = new JMenuItem(關閉(X),KeyEvent.VK_X); jmb.add(file); / 新增file選單 Ch11_3_2,JToolBar,JToolBar toolBar = new JToolBar(); blue = new JButt

10、on(new ImageIcon(blue1.gif); blue.setToolTipText(藍色); blue.addActionListener(this); yellow = new JButton(new ImageIcon(yellow1.gif); yellow.setToolTipText(黃色); yellow.addActionListener(this); green = new JButton(new ImageIcon(green1.gif); green.setToolTipText(綠色); green.addActionListener(this); tool

11、Bar.add(blue); toolBar.add(yellow); toolBar.add(green); Ch11_3_3,JFileChooser,final JFileChooser jfc = new JFileChooser(); int n = jfc.showOpenDialog(Ch11_4_1.this); if ( n = JFileChooser.APPROVE_OPTION ) File file = jfc.getSelectedFile(); area.append(開啟檔案名稱: ); area.append(file.getName() + n); ,JColorChooser,final JColorChooser jcc = new JColorChooser(); JButton button = new JButton(選擇背景色彩); button.addActionListener(new ActionListener() pu