疯狂JAVA讲义---第十二章：Swing编程（一）基本组件

今天csdn的博客控件改革了，用起来超不爽，以前的博客的代码格式都没了，哎~~~~~~~~我辛辛苦苦整的格式的啊，算了博客还是要继续的，现在开始就不注重格式了，省的以后再改版又都没了。

今天还是继续我们的JAVA的GUI，前几天讲了AWT,这个太重了。Swing开发图形界面比AWT更加优秀，切实轻量级的，100%的JAVA实现，唯一的缺点就是比AWT略慢。

先讲下Swing和AWT组件的相似处，以下图显示相同的组件

Swing多出来的组件

组件比较多，那些和AWT相同的组件用起来差不多，我就不多讲了，就贴段全面的代码让大家把玩下，eg

public class SwingComponent{JFrame f = new JFrame("测试");//定义一个按钮,并为之指定图标Icon okIcon = new ImageIcon("ico/ok.png");JButton ok = new JButton("确认" , okIcon);//定义一个单选按钮，初始处于选中状态JRadioButton male = new JRadioButton("男" , true);//定义一个单按钮，初始处于没有选中状态JRadioButton female = new JRadioButton("女" , false);//定义一个ButtonGroup，用于将上面两个JRadioButton组合在一起ButtonGroup bg = new ButtonGroup();//定义一个复选框，初始处于没有选中状态。JCheckBox married = new JCheckBox("是否已婚？" , false);String[] colors = new String[]{"红色" , "绿色" , "蓝色"};//定义一个下拉选择框JComboBox colorChooser = new JComboBox(colors);//定义一个列表选择框JList colorList = new JList(colors);//定义一个8行、20列的多行文本域JTextArea ta = new JTextArea(8, 20);//定义一个40列的单行文本域JTextField name = new JTextField(40);JMenuBar mb = new JMenuBar();JMenu file = new JMenu("文件");JMenu edit = new JMenu("编辑");//创建“新建”菜单项，并为之指定图标Icon newIcon = new ImageIcon("ico/new.png");JMenuItem newItem = new JMenuItem("新建" , newIcon);//创建“保存”菜单项，并为之指定图标Icon saveIcon = new ImageIcon("ico/save.png");JMenuItem saveItem = new JMenuItem("保存" , saveIcon);//创建“退出”菜单项，并为之指定图标Icon exitIcon = new ImageIcon("ico/exit.png");JMenuItem exitItem = new JMenuItem("退出" , exitIcon);JCheckBoxMenuItem autoWrap = new JCheckBoxMenuItem("自动换行");//创建“复制”菜单项，并为之指定图标JMenuItem copyItem = new JMenuItem("复制" , new ImageIcon("ico/copy.png"));//创建“粘贴”菜单项，并为之指定图标JMenuItem pasteItem = new JMenuItem("粘贴" , new ImageIcon("ico/paste.png"));JMenu format = new JMenu("格式");JMenuItem commentItem = new JMenuItem("注释");JMenuItem cancelItem = new JMenuItem("取消注释");//定义一个右键菜单用于设置程序风格JPopupMenu pop = new JPopupMenu();//用于组合三个风格菜单项的ButtonGroupButtonGroup flavorGroup = new ButtonGroup();//创建三个单选框按钮，用于设定程序的外观风格JRadioButtonMenuItem metalItem = new JRadioButtonMenuItem("Metal风格" , true);JRadioButtonMenuItem windowsItem = new JRadioButtonMenuItem("Windows风格");JRadioButtonMenuItem motifItem = new JRadioButtonMenuItem("Motif风格");public void init(){//创建一个装载了文本框、按钮的JPanelJPanel bottom = new JPanel();bottom.add(name);bottom.add(ok);f.add(bottom , BorderLayout.SOUTH);//创建一个装载了下拉选择框、三个JCheckBox的JPanelJPanel checkPanel = new JPanel();checkPanel.add(colorChooser);bg.add(male);bg.add(female);checkPanel.add(male);checkPanel.add(female);checkPanel.add(married);//创建一个垂直排列组件的Box，盛装多行文本域JPanelBox topLeft = Box.createVerticalBox();//使用JScrollPane作为普通组件的JViewPortJScrollPane taJsp = new JScrollPane(ta);topLeft.add(taJsp);topLeft.add(checkPanel);//创建一个垂直排列组件的Box，盛装topLeft、colorListBox top = Box.createHorizontalBox();top.add(topLeft);top.add(colorList);//将top Box容器添加到窗口的中间f.add(top);//-----------下面开始组合菜单、并为菜单添加事件监听器----------//为newItem设置快捷键，设置快捷键时要使用大写字母newItem.setAccelerator(KeyStroke.getKeyStroke('N' , InputEvent.CTRL_MASK)); newItem.addActionListener(new ActionListener(){public void actionPerformed(ActionEvent e){ta.append("用户单击了“新建”菜单/n");}});//为file菜单添加菜单项file.add(newItem);file.add(saveItem);file.add(exitItem);//为edit菜单添加菜单项edit.add(autoWrap);//使用addSeparator方法来添加菜单分隔线edit.addSeparator();edit.add(copyItem);edit.add(pasteItem);commentItem.setToolTipText("将程序代码注释起来！");//为format菜单添加菜单项format.add(commentItem);format.add(cancelItem);//使用添加new JMenuItem("-")的方式不能添加菜单分隔符edit.add(new JMenuItem("-"));//将format菜单组合到edit菜单中，从而形成二级菜单edit.add(format);//将file、edit菜单添加到mb菜单条中mb.add(file);mb.add(edit);//为f窗口设置菜单条f.setJMenuBar(mb);//-----------下面开始组合右键菜单、并安装右键菜单----------flavorGroup.add(metalItem);flavorGroup.add(windowsItem);flavorGroup.add(motifItem);pop.add(metalItem);pop.add(windowsItem);pop.add(motifItem);//为三个菜单创建事件监听器ActionListener flavorListener = new ActionListener(){public void actionPerformed(ActionEvent e){try{if (e.getActionCommand().equals("Metal风格")){changeFlavor(1);}else if (e.getActionCommand().equals("Windows风格")){changeFlavor(2);}else if (e.getActionCommand().equals("Motif风格")){changeFlavor(3);}}catch (Exception ee){ee.printStackTrace();}}};//为三个菜单添加事件监听器metalItem.addActionListener(flavorListener);windowsItem.addActionListener(flavorListener);motifItem.addActionListener(flavorListener);//调用该方法即可设置右键菜单，无需使用事件机制ta.setComponentPopupMenu(pop); //设置关闭窗口时，退出程序f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);f.pack();f.setVisible(true);}//定义一个方法，用于改变界面风格private void changeFlavor(int flavor)throws Exception{switch (flavor){//设置Metal风格case 1:UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");break;//设置Windows风格case 2:UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");break;//设置Motif风格case 3:UIManager.setLookAndFeel("com.sun.java.swing.plaf.motif.MotifLookAndFeel");break;}//更新f窗口内顶级容器以及内部所有组件的UISwingUtilities.updateComponentTreeUI(f.getContentPane());//更新mb菜单条以及内部所有组件的UISwingUtilities.updateComponentTreeUI(mb);//更新pop右键菜单以及内部所有组件的UISwingUtilities.updateComponentTreeUI(pop);}public static void main(String[] args) {//设置Swing窗口使用Java风格JFrame.setDefaultLookAndFeelDecorated(true); new SwingComponent().init();}}

下面Swing的特殊组件，我将以举例的形式，这样最能主观理解，大家一定要动手试试

首先是JToolBar

public class TestJToolBar{JFrame jf = new JFrame("测试工具条");JTextArea jta = new JTextArea(6, 35);JToolBar jtb = new JToolBar();JMenuBar jmb = new JMenuBar();JMenu edit = new JMenu("编辑");Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();//创建"粘贴"Action，该Action用于创建菜单项、工具按钮和普通按钮Action pasteAction = new AbstractAction("粘贴", new ImageIcon("ico/paste.png")){public void actionPerformed(ActionEvent e){//如果剪贴板中包含stringFlavor内容if (clipboard.isDataFlavorAvailable(DataFlavor.stringFlavor)){try{//取出剪贴板中stringFlavor内容String content = (String)clipboard.getData(DataFlavor.stringFlavor);//将选中内容替换成剪贴板中的内容jta.replaceRange(content , jta.getSelectionStart() , jta.getSelectionEnd());}catch (Exception ee){ee.printStackTrace();}}}};//创建"复制"ActionAction copyAction = new AbstractAction("复制", new ImageIcon("ico/copy.png")){public void actionPerformed(ActionEvent e){StringSelection contents = new StringSelection(jta.getSelectedText());//将StringSelection对象放入剪贴板clipboard.setContents(contents, null);//如果剪贴板中包含stringFlavor内容if (clipboard.isDataFlavorAvailable(DataFlavor.stringFlavor)){//将pasteAction激活pasteAction.setEnabled(true);}}};public void init(){//pasteAction默认处于不激活状态pasteAction.setEnabled(false);jf.add(new JScrollPane(jta));//以Action创建按钮，并将该按钮添加到Panel中JButton copyBn = new JButton(copyAction);JButton pasteBn = new JButton(pasteAction);JPanel jp = new JPanel();jp.add(copyBn);jp.add(pasteBn);jf.add(jp , BorderLayout.SOUTH);//向工具条中添加Action对象，该对象将会转换成工具按钮jtb.add(copyAction);jtb.addSeparator();jtb.add(pasteAction);//向菜单中添加Action对象，该对象将会转换成菜单项edit.add(copyAction);edit.add(pasteAction);//将edit菜单添加到菜单条中jmb.add(edit);jf.setJMenuBar(jmb);//设置工具条和工具按钮之间的距离jtb.setMargin(new Insets(20 ,10 , 5 , 30));//向窗口中添加工具条jf.add(jtb , BorderLayout.NORTH);jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);jf.pack();jf.setVisible(true);}public static void main(String[] args) {new TestJToolBar().init();}}

 

继续讲Swing的特殊组件，JColorChooser和JFileChooser这两个东西在awt中都是利用系统的控件，这样导致不同操作系统有不同的界面，用Swing就避免了这些问题。下面就先看JColorChooser的例子，eg（一个简单画图程序）

public class HandDraw{//画图区的宽度 private final int AREA_WIDTH = 500;//画图区的高度private final int AREA_HEIGHT = 400;//下面的preX、preY保存了上一次鼠标拖动事件的鼠标座标private int preX = -1;private int preY = -1;//定义一个右键菜单用于设置画笔颜色JPopupMenu pop = new JPopupMenu();JMenuItem chooseColor = new JMenuItem("选择颜色");//定义一个BufferedImage对象BufferedImage image = new BufferedImage(AREA_WIDTH , AREA_HEIGHT , BufferedImage.TYPE_INT_RGB);//获取image对象的GraphicsGraphics g = image.getGraphics();private JFrame f = new JFrame("简单手绘程序");private DrawCanvas drawArea = new DrawCanvas();//用于保存需要绘制什么图形的字符串属性private String shape = "";//用于保存画笔颜色private Color foreColor = new Color(255, 0 ,0);public void init(){chooseColor.addActionListener(new ActionListener(){public void actionPerformed(ActionEvent ae){//下面代码直接弹出一个模式的颜色选择器对话框，并返回用户选择的颜色//foreColor = JColorChooser.showDialog(f , "选择画笔颜色" , foreColor);//下面代码则可以弹出一个非模式的颜色选择对话框，//并可以分别为“确定”按钮、“取消”按钮指定事件监听器final JColorChooser colorPane = new JColorChooser(foreColor);JDialog jd = JColorChooser.createDialog(f ,"选择画笔颜色",false, colorPane, new ActionListener(){public void actionPerformed(ActionEvent ae){foreColor = colorPane.getColor();}}, null);jd.setVisible(true);}});//将菜单项组合成右键菜单pop.add(chooseColor);//将右键菜单添加到drawArea对象中drawArea.setComponentPopupMenu(pop);//将image对象的背景色填充成白色g.fillRect(0 , 0 ,AREA_WIDTH , AREA_HEIGHT);drawArea.setPreferredSize(new Dimension(AREA_WIDTH , AREA_HEIGHT));//监听鼠标移动动作drawArea.addMouseMotionListener(new MouseMotionAdapter(){//实现按下鼠标键并拖动的事件处理器public void mouseDragged(MouseEvent e){//如果preX和preY大于0if (preX > 0 && preY > 0){//设置当前颜色g.setColor(foreColor);//绘制从上一次鼠标拖动事件点到本次鼠标拖动事件点的线段g.drawLine(preX , preY , e.getX() , e.getY());}//将当前鼠标事件点的X、Y座标保存起来preX = e.getX();preY = e.getY();//重绘drawArea对象drawArea.repaint();}});//监听鼠标事件drawArea.addMouseListener(new MouseAdapter(){//实现鼠标松开的事件处理器public void mouseReleased(MouseEvent e){//松开鼠标键时，把上一次鼠标拖动事件的X、Y座标设为-1。preX = -1;preY = -1;}});f.add(drawArea);f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);f.pack();f.setVisible(true);}public static void main(String[] args) {new HandDraw().init();}//让画图区域继承JPanel类class DrawCanvas extends JPanel{//重写JPanel的paint方法，实现绘画public void paint(Graphics g){//将image绘制到该组件上g.drawImage(image , 0 , 0 , null);}}}

下面举个JFileChooser,这些东西组件不是很常用，大家可以收藏着，到用的时候翻出来看，eg

 public class ImageViewer{final int PREVIEW_SIZE = 100;JFrame jf = new JFrame("简单图片查看器");JMenuBar menuBar = new JMenuBar();//该label用于显示图片JLabel label = new JLabel();//以当前路径创建文件选择器JFileChooser chooser = new JFileChooser(".");JLabel accessory = new JLabel();ExtensionFileFilter filter = new ExtensionFileFilter();public void init(){//-------------------下面开始初始化JFileChooser的相关属性-----------------// 创建一个FileFilterfilter.addExtension("jpg");filter.addExtension("jpeg");filter.addExtension("gif");filter.addExtension("png");filter.setDescription("图片文件(*.jpg,*.jpeg,*.gif,*.png)");chooser.addChoosableFileFilter(filter);//禁止“文件类型”下拉列表中显示“所有文件”选项。chooser.setAcceptAllFileFilterUsed(false); //为文件选择器指定自定义的FileView对象chooser.setFileView(new FileIconView(filter));//为文件选择器指定一个预览图片的附件组件chooser.setAccessory(accessory);//设置预览图片组件的大小和边框accessory.setPreferredSize(new Dimension(PREVIEW_SIZE, PREVIEW_SIZE));accessory.setBorder(BorderFactory.createEtchedBorder());//用于检测被选择文件的改变事件chooser.addPropertyChangeListener(new PropertyChangeListener(){public void propertyChange(PropertyChangeEvent event) {//JFileChooser的被选文件已经发生了改变if (event.getPropertyName() == JFileChooser.SELECTED_FILE_CHANGED_PROPERTY){//获取用户选择的新文件 File f = (File) event.getNewValue();if (f == null){ accessory.setIcon(null); return; }//将所文件读入ImageIcon对象中ImageIcon icon = new ImageIcon(f.getPath());//如果图像太大，则缩小它if(icon.getIconWidth() > PREVIEW_SIZE){icon = new ImageIcon(icon.getImage().getScaledInstance(PREVIEW_SIZE, -1, Image.SCALE_DEFAULT));}//改变accessory Label的图标accessory.setIcon(icon);}}});//----------下面代码开始为该窗口安装菜单------------JMenu menu = new JMenu("文件");menuBar.add(menu);JMenuItem openItem = new JMenuItem("打开");menu.add(openItem);//单击openItem菜单项显示“打开文件”的对话框openItem.addActionListener(new ActionListener(){public void actionPerformed(ActionEvent event){//设置文件对话框的当前路径//chooser.setCurrentDirectory(new File("."));//显示文件对话框int result = chooser.showDialog(jf , "打开图片文件");//如果用户选择了APPROVE（赞同）按钮，即打开，保存及其等效按钮if(result == JFileChooser.APPROVE_OPTION){String name = chooser.getSelectedFile().getPath();//显示指定图片label.setIcon(new ImageIcon(name));}}});JMenuItem exitItem = new JMenuItem("退出");menu.add(exitItem);exitItem.addActionListener(new ActionListener(){public void actionPerformed(ActionEvent event){System.exit(0);}});jf.setJMenuBar(menuBar);//添加用于显示图片的JLabel组件。jf.add(new JScrollPane(label));jf.setSize(500, 400);jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);jf.setVisible(true);}public static void main(String[] args){new ImageViewer().init();}}//创建FileFilter的子类，用以实现文件过滤功能class ExtensionFileFilter extends FileFilter{private String description = "";private ArrayList<String> extensions = new ArrayList<String>();//自定义方法，用于添加文件扩展名public void addExtension(String extension){if (!extension.startsWith(".")){extension = "." + extension;extensions.add(extension.toLowerCase());}}//用于设置该文件过滤器的描述文本public void setDescription(String aDescription){description = aDescription;}//继承FileFilter类必须实现的抽象方法，返回该文件过滤器的描述文本public String getDescription(){return description; }//继承FileFilter类必须实现的抽象方法，判断该文件过滤器是否接受该文件public boolean accept(File f){//如果该文件是路径，接受该文件if (f.isDirectory()) return true;//将文件名转为小写（全部转为小写后比较，用于忽略文件名大小写）String name = f.getName().toLowerCase();//遍历所有可接受的扩展名，如果扩展名相同，该文件就可接受。for (String extension : extensions){if (name.endsWith(extension)) {return true;}}return false;}}//自定义一个FileView类，用于为指定类型的指定图标class FileIconView extends FileView{private FileFilter filter;public FileIconView(FileFilter filter){this.filter = filter;}//如果文件不是目录，并且不是public Icon getIcon(File f){if (!f.isDirectory() && filter.accept(f)){return new ImageIcon("ico/pict.png");}else if (f.isDirectory()){//获取所有根路径File[] fList = File.listRoots();for (File tmp : fList){//如果该路径是根路径if (tmp.equals(f)){return new ImageIcon("ico/dsk.png");}}return new ImageIcon("ico/folder.png");}//使用默认图标else{return null;}}}

 

 注意：以上图片我都没给，自己随便弄几张看看效果

JOptionPane是一种特殊的JFrame,他的出现是为了方便我们创建一些简单的对话框，你也可以用JFrame搞一个，但很繁琐，但如果你用UI的拖拽工具那就没什么了。eg（各种对话框）

public class TestJOptionPane{JFrame jf = new JFrame("测试JOptionPane");//分别定义6个面板用于定义对话框的几种选项private ButtonPanel messagePanel;private ButtonPanel messageTypePanel;private ButtonPanel msgPanel;private ButtonPanel confirmPanel;private ButtonPanel optionsPanel;private ButtonPanel inputPanel;private String messageString = "消息区内容";private Icon messageIcon = new ImageIcon("ico/heart.png");private Object messageObject = new Date();private Component messageComponent = new JButton("组件消息");private JButton msgBn = new JButton("消息对话框");private JButton confrimBn = new JButton("确认对话框");private JButton inputBn = new JButton("输入对话框");private JButton optionBn = new JButton("选项对话框");public void init(){JPanel top = new JPanel();top.setBorder(new TitledBorder(new EtchedBorder(), "对话框的通用选项" , TitledBorder.CENTER ,TitledBorder.TOP ));top.setLayout(new GridLayout(1 , 2));//消息类型Panel，该Panel中的选项决定对话框的图标messageTypePanel = new ButtonPanel("选择消息的类型", new String[]{"ERROR_MESSAGE", "INFORMATION_MESSAGE", "WARNING_MESSAGE", "QUESTION_MESSAGE","PLAIN_MESSAGE" });//消息内容类型的Panel，该Panel中的选项决定对话框的消息区的内容messagePanel = new ButtonPanel("选择消息内容的类型", new String[]{"字符串消息", "图标消息", "组件消息","普通对象消息" , "Object[]消息"});top.add(messageTypePanel);top.add(messagePanel);JPanel bottom = new JPanel();bottom.setBorder(new TitledBorder(new EtchedBorder(), "弹出不同的对话框" , TitledBorder.CENTER ,TitledBorder.TOP));bottom.setLayout(new GridLayout(1 , 4));//创建用于弹出消息对话框的PanelmsgPanel = new ButtonPanel("消息对话框", null);msgBn.addActionListener(new ShowAction());msgPanel.add(msgBn);//创建用于弹出确认对话框的PanelconfirmPanel = new ButtonPanel("确认对话框", new String[]{"DEFAULT_OPTION", "YES_NO_OPTION", "YES_NO_CANCEL_OPTION","OK_CANCEL_OPTION"});confrimBn.addActionListener(new ShowAction());confirmPanel.add(confrimBn);//创建用于弹出输入对话框的PanelinputPanel = new ButtonPanel("输入对话框",new String[]{"单行文本框","下拉列表选择框"});inputBn.addActionListener(new ShowAction());inputPanel.add(inputBn);//创建用于弹出选项对话框的PaneloptionsPanel = new ButtonPanel("选项对话框", new String[]{"字符串选项", "图标选项", "对象选项"});optionBn.addActionListener(new ShowAction());optionsPanel.add(optionBn);bottom.add(msgPanel);bottom.add(confirmPanel);bottom.add(inputPanel);bottom.add(optionsPanel);Box box = new Box(BoxLayout.Y_AXIS);box.add(top);box.add(bottom);jf.add(box);jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);jf.pack();jf.setVisible(true);}//根据用户选择返回选项类型private int getOptionType(){if (confirmPanel.getSelection().equals("DEFAULT_OPTION"))return JOptionPane.DEFAULT_OPTION;else if (confirmPanel.getSelection().equals("YES_NO_OPTION"))return JOptionPane.YES_NO_OPTION;else if (confirmPanel.getSelection().equals("YES_NO_CANCEL_OPTION"))return JOptionPane.YES_NO_CANCEL_OPTION;elsereturn JOptionPane.OK_CANCEL_OPTION;}//根据用户选择返回消息private Object getMessage(){if (messagePanel.getSelection().equals("字符串消息"))return messageString;else if (messagePanel.getSelection().equals("图标消息"))return messageIcon;else if (messagePanel.getSelection().equals("组件消息"))return messageComponent;else if(messagePanel.getSelection().equals("普通对象消息"))return messageObject;elsereturn new Object[]{messageString , messageIcon , messageObject , messageComponent};}//根据用户选择返回消息类型（决定图标区的图标）private int getDialogType(){if (messageTypePanel.getSelection().equals("ERROR_MESSAGE"))return JOptionPane.ERROR_MESSAGE;else if (messageTypePanel.getSelection().equals("INFORMATION_MESSAGE"))return JOptionPane.INFORMATION_MESSAGE;else if (messageTypePanel.getSelection().equals("WARNING_MESSAGE"))return JOptionPane.WARNING_MESSAGE;else if(messageTypePanel.getSelection().equals("QUESTION_MESSAGE"))return JOptionPane.QUESTION_MESSAGE;elsereturn JOptionPane.PLAIN_MESSAGE;}private Object[] getOptions(){if (optionsPanel.getSelection().equals("字符串选项"))return new String[]{"a" , "b" , "c" , "d"};else if (optionsPanel.getSelection().equals("图标选项"))return new Icon[]{new ImageIcon("ico/1.gif") , new ImageIcon("ico/2.gif"),new ImageIcon("ico/3.gif"),new ImageIcon("ico/4.gif")};elsereturn new Object[]{new Date() ,new Date() , new Date()};}//为各按钮定义事件监听器private class ShowAction implements ActionListener{public void actionPerformed(ActionEvent event){ if (event.getActionCommand().equals("确认对话框")){JOptionPane.showConfirmDialog(jf , getMessage(),"确认对话框", getOptionType(), getDialogType());}else if (event.getActionCommand().equals("输入对话框")){ if (inputPanel.getSelection().equals("单行文本框")){JOptionPane.showInputDialog(jf,getMessage(), "输入对话框", getDialogType());}else{JOptionPane.showInputDialog(jf,getMessage(), "输入对话框", getDialogType(),null,new String[] {"轻量级J2EE企业应用实战", "Struts2权威指南"}, "Struts2权威指南");}}else if (event.getActionCommand().equals("消息对话框")){JOptionPane.showMessageDialog(jf,getMessage(),"消息对话框",getDialogType());}else if (event.getActionCommand().equals("选项对话框")){JOptionPane.showOptionDialog(jf , getMessage() , "选项对话框", getOptionType(),getDialogType(), null,getOptions(), "a");}}}public static void main(String[] args){ new TestJOptionPane().init();}}//定义一个JPanel类扩展类，该类的对象包含多个纵向排列的JRadioButton控件//且Panel扩展类可以指定一个字符串作为TitledBorderclass ButtonPanel extends JPanel{ private ButtonGroup group;public ButtonPanel(String title, String[] options){ setBorder(BorderFactory.createTitledBorder(BorderFactory.createEtchedBorder(), title));setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));group = new ButtonGroup();for (int i = 0; options!= null && i < options.length; i++){ JRadioButton b = new JRadioButton(options[i]);b.setActionCommand(options[i]);add(b);group.add(b);b.setSelected(i == 0);}}//定义一个方法，用于返回用户选择的选项public String getSelection(){ return group.getSelection().getActionCommand();} } 

看似简单，用起来花样还是挺多的