下面是Swing组件的演示：
package a_swing; import java.awt.BorderLayout; import java.awt.Color; import java.awt.Container; import java.awt.Cursor; import java.awt.Dimension; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import javax.swing.BoundedRangeModel; import javax.swing.ButtonGroup; import javax.swing.DefaultListModel; import javax.swing.Icon; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JCheckBox; import javax.swing.JComboBox; import javax.swing.JDialog; import javax.swing.JFileChooser; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JList; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.JProgressBar; import javax.swing.JRadioButton; import javax.swing.JScrollPane; import javax.swing.JSplitPane; import javax.swing.JTabbedPane; import javax.swing.JTable; import javax.swing.JTextField; import javax.swing.JTextPane; import javax.swing.JToggleButton; import javax.swing.JTree; import javax.swing.Timer; import javax.swing.border.EtchedBorder; import javax.swing.event.ListSelectionEvent; import javax.swing.event.ListSelectionListener; import javax.swing.event.TreeSelectionEvent; import javax.swing.event.TreeSelectionListener; import javax.swing.tree.DefaultMutableTreeNode; import javax.swing.tree.TreeSelectionModel; public class Test extends JFrame { public Test() { MenuTest menuTest = new MenuTest(); LeftPanel leftPanel = new LeftPanel(); RightPanel rightPanel = new RightPanel(); BottomPanel bottomPanel = new BottomPanel(); CenterPanel centerPanel = new CenterPanel(); Container c = this.getContentPane(); this.setJMenuBar(menuTest); c.add(leftPanel, BorderLayout.WEST); c.add(rightPanel, BorderLayout.EAST); c.add(centerPanel, BorderLayout.CENTER); c.add(bottomPanel, BorderLayout.SOUTH); this.addWindowListener(new WindowAdapter() { public void WindowClosing(WindowEvent e) { dispose(); System.exit(0); } }); setSize(700, 500); setTitle("Swing 组件大全简体版"); setUndecorated(true); setLocation(200, 150); show(); } class MenuTest extends JMenuBar { private JDialog aboutDialog; public MenuTest() { JMenu fileMenu = new JMenu("文件"); JMenuItem exitMenuItem = new JMenuItem("退出", KeyEvent.VK_E); JMenuItem aboutMenuItem = new JMenuItem("关于..", KeyEvent.VK_A); fileMenu.add(exitMenuItem); fileMenu.add(aboutMenuItem); this.add(fileMenu); aboutDialog = new JDialog(); initAboutDialog(); exitMenuItem.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { dispose(); System.exit(0); } }); aboutMenuItem.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { aboutDialog.show(); } }); } public JDialog get() { return aboutDialog; } public void initAboutDialog() { aboutDialog.setTitle("关于"); Container con = aboutDialog.getContentPane(); Icon icon = new ImageIcon("sdmile.gif"); JLabel aboutLabel = new JLabel("<html><b><font size=5>" + "<center>Swing!" + "<br>", icon, JLabel.CENTER); con.add(aboutLabel, BorderLayout.CENTER); aboutDialog.setSize(450, 225); aboutDialog.setLocation(300, 300); aboutDialog.addWindowListener(new WindowAdapter() { public void WindowClosing(WindowEvent e) { dispose(); } }); } } class LeftPanel extends JPanel { private int i = 0; public LeftPanel() { DefaultMutableTreeNode root = new DefaultMutableTreeNode("Root"); DefaultMutableTreeNode child = new DefaultMutableTreeNode("Child"); DefaultMutableTreeNode select = new DefaultMutableTreeNode("select"); DefaultMutableTreeNode child1 = new DefaultMutableTreeNode("" + i); root.add(child); root.add(select); child.add(child1); JTree tree = new JTree(root); tree.getSelectionModel().setSelectionMode(TreeSelectionModel.DISCONTIGUOUS_TREE_SELECTION); tree.setRowHeight(20); tree.addTreeSelectionListener(new TreeSelectionListener() { public void valueChanged(TreeSelectionEvent e) { JTree tree = (JTree) e.getSource(); DefaultMutableTreeNode selectNode = (DefaultMutableTreeNode) tree.getLastSelectedPathComponent(); i++; selectNode.add(new DefaultMutableTreeNode("" + i)); } }); tree.setPreferredSize(new Dimension(100, 300)); JScrollPane scrollPane = new JScrollPane(tree); this.add(scrollPane); } } class BottomPanel extends JPanel { private JProgressBar pb; public BottomPanel() { pb = new JProgressBar(); pb.setPreferredSize(new Dimension(680, 20)); Timer time = new Timer(1, new ActionListener() { int counter = 0; public void actionPerformed(ActionEvent e) { counter++; pb.setValue(counter); Timer t = (Timer) e.getSource(); if (counter == pb.getMaximum()) { t.stop(); counter = 0; t.start(); } } }); time.start(); pb.setStringPainted(true); pb.setMinimum(0); pb.setMaximum(1000); pb.setBackground(Color.white); pb.setForeground(Color.red); this.add(pb); } public void setProcessBar(BoundedRangeModel rangeModel) { pb.setModel(rangeModel); } } class RightPanel extends JPanel { public RightPanel() { this.setLayout(new GridLayout(8, 1)); JCheckBox checkBox = new JCheckBox("复选按钮"); JButton button = new JButton("打开文件"); button.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { JFileChooser file = new JFileChooser(); int resule = file.showOpenDialog(new JPanel()); if (resule == file.APPROVE_OPTION) { String fileName = file.getSelectedFile().getName(); String dir = file.getSelectedFile().getName(); JOptionPane.showConfirmDialog(null, dir + "\" + fileName, "选择的文件", JOptionPane.YES_OPTION); } } }); JToggleButton toggleButton = new JToggleButton("双胎按钮"); ButtonGroup buttonGroup = new ButtonGroup(); JRadioButton radioButton1 = new JRadioButton("单选按钮1", false); JRadioButton radioButton2 = new JRadioButton("单选按钮2", false); JComboBox comboBox = new JComboBox(); comboBox.setToolTipText("点击下拉列表增加选项"); comboBox.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { JComboBox comboBox = (JComboBox) e.getSource(); comboBox.addItem("程序员"); comboBox.addItem("分析员"); } }); DefaultListModel litem = new DefaultListModel(); litem.addElement("香蕉"); litem.addElement("水果"); JList list = new JList(litem); list.addListSelectionListener(new ListSelectionListener() { public void valueChanged(ListSelectionEvent e) { JList l = (JList) e.getSource(); Object s = l.getSelectedValue(); JOptionPane.showMessageDialog(null, s, "消息框", JOptionPane.YES_OPTION); } }); buttonGroup.add(radioButton1); buttonGroup.add(radioButton2); add(button); add(toggleButton); add(checkBox); add(radioButton1); add(radioButton2); add(comboBox); add(list); this.setBorder(new EtchedBorder(EtchedBorder.LOWERED, Color.LIGHT_GRAY, Color.blue)); } } class CenterPanel extends JPanel { public CenterPanel() { JTabbedPane tab = new JTabbedPane(JTabbedPane.TOP); JTextField textField = new JTextField("文本域，点击打开<文件按钮>可选择文件"); textField.setActionCommand("textField"); JTextPane textPane = new JTextPane(); textPane.setCursor(new Cursor(Cursor.TEXT_CURSOR)); textPane.setText("编辑器，试着点击文本区，试着拉动分隔条。"); textPane.addMouseListener(new MouseAdapter() { public void mousePressed(MouseEvent e) { JTextPane textPane = (JTextPane) e.getSource(); textPane.setText("编辑器点击命令成功"); } }); JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, textField, textPane); JTable table = new JTable(10, 10); JPanel pane = new JPanel(); pane.add(table.getTableHeader(), BorderLayout.NORTH); pane.add(table); tab.addTab("文本演示", splitPane); tab.addTab("表格演示", pane); tab.setPreferredSize(new Dimension(500, 600)); this.add(tab); this.setEnabled(true); } } public static void main(String args[]) { new Test(); } }
演示界面如下：
