/*** 作品:记事本* 作者：**** 功能：简单的文字编辑*/import java.awt.*;import java.awt.event.*;import java.io.*;import javax.swing.*;import javax.swing.event.ChangeEvent;import javax.swing.event.ChangeListener;class NotePad extends JFrame{private JMenuBar menuBar;private JMenu fielMenu,editMenu,formMenu,aboutMenu;private JMenuItemnewMenuItem,openMenuItem,saveMenuItem,exitMenuItem;private JMenuItemcutMenuItem,copyMenuItem,pasteMenuItem,foundItem,replaceItem,s electAll;private JMenuItem font,about;private JTextArea textArea;private JFrame foundFrame,replaceFrame;private JCheckBoxMenuItem wrapline;private JTextField textField1=new JTextField(15);private JTextField textField2=new JTextField(15);private JButton startButton,replaceButton,reallButton;int start=0;String value;File file=null;JFileChooser fileChooser=new JFileChooser();boolean wrap=false;public NotePad(){//创建文本域textArea=new JTextArea();add(new JScrollPane(textArea),BorderLayout.CENTER);//创建文件菜单及文件菜单项fielMenu=new JMenu("文件");fielMenu.setFont(new Font("微软雅黑",0,15));newMenuItem=new JMenuItem("新建",newImageIcon("icons\\new24.gif"));newMenuItem.setFont(new Font("微软雅黑",Font.BOLD,13));newMenuItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent. VK_N,InputEvent.CTRL_MASK));newMenuItem.addActionListener(listener);openMenuItem=new JMenuItem("打开",newImageIcon("icons\\open24.gif"));openMenuItem.setFont(new Font("微软雅黑",Font.BOLD,13));openMenuItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent .VK_O,InputEvent.CTRL_MASK));openMenuItem.addActionListener(listener);saveMenuItem=new JMenuItem("保存",newImageIcon("icons\\save.gif"));saveMenuItem.setFont(new Font("微软雅黑",Font.BOLD,13));saveMenuItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent .VK_S,InputEvent.CTRL_MASK));saveMenuItem.addActionListener(listener);exitMenuItem=new JMenuItem("退出",newImageIcon("icons\\exit24.gif"));exitMenuItem.setFont(new Font("微软雅黑",Font.BOLD,13));exitMenuItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent .VK_E,InputEvent.CTRL_MASK));exitMenuItem.addActionListener(listener);//创建编辑菜单及菜单项editMenu=new JMenu("编辑");editMenu.setFont(new Font("微软雅黑",0,15));cutMenuItem=new JMenuItem("剪切",newImageIcon("icons\\cut24.gif"));cutMenuItem.setFont(new Font("微软雅黑",Font.BOLD,13));cutMenuItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent. VK_X,InputEvent.CTRL_MASK));cutMenuItem.addActionListener(listener);copyMenuItem=new JMenuItem("复制",newImageIcon("icons\\copy24.gif"));copyMenuItem.setFont(new Font("微软雅黑",Font.BOLD,13));copyMenuItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent .VK_C,InputEvent.CTRL_MASK));copyMenuItem.addActionListener(listener);pasteMenuItem=new JMenuItem("粘贴",newImageIcon("icons\\paste24.gif"));pasteMenuItem.setFont(new Font("微软雅黑",Font.BOLD,13));pasteMenuItem.setAccelerator(KeyStroke.getKeyStroke(KeyEven t.VK_V,InputEvent.CTRL_MASK));pasteMenuItem.addActionListener(listener);foundItem=new JMenuItem("查找");foundItem.setFont(new Font("微软雅黑",Font.BOLD,13));foundItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK _F,InputEvent.CTRL_MASK));foundItem.addActionListener(listener);replaceItem=new JMenuItem("替换");replaceItem.setFont(new Font("微软雅黑",Font.BOLD,13));replaceItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent. VK_R,InputEvent.CTRL_MASK));replaceItem.addActionListener(listener);selectAll=new JMenuItem("全选");selectAll.setFont(new Font("微软雅黑",Font.BOLD,13));selectAll.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK _A,InputEvent.CTRL_MASK));selectAll.addActionListener(listener);//创建格式菜单及菜单项formMenu=new JMenu("格式");formMenu.setFont(new Font("微软雅黑",0,15));wrapline=new JCheckBoxMenuItem("自动换行");wrapline.setFont(new Font("微软雅黑",Font.BOLD,13));wrapline.addActionListener(listener);wrapline.addChangeListener(new ChangeListener() {public void stateChanged(ChangeEvent e) {if(wrapline.isSelected()){textArea.setLineWrap(true);}elsetextArea.setLineWrap(false);}});font=new JMenuItem("字体");font.setFont(new Font("微软雅黑",Font.BOLD,13)); font.addActionListener(listener);//创建关于菜单aboutMenu=new JMenu("关于");aboutMenu.setFont(new Font("微软雅黑",0,15)); about=new JMenuItem("记事本……");about.setFont(new Font("微软雅黑",Font.BOLD,13)); about.addActionListener(listener);//添加文件菜单项fielMenu.add(newMenuItem);fielMenu.add(openMenuItem);fielMenu.add(saveMenuItem);fielMenu.addSeparator();fielMenu.add(exitMenuItem);//添加编辑菜单项editMenu.add(cutMenuItem);editMenu.add(copyMenuItem);editMenu.add(pasteMenuItem);editMenu.add(foundItem);editMenu.add(replaceItem);editMenu.addSeparator();editMenu.add(selectAll);//添加格式菜单项formMenu.add(wrapline);formMenu.add(font);//添加关于菜单项aboutMenu.add(about);//添加菜单menuBar=new JMenuBar();menuBar.add(fielMenu);menuBar.add(editMenu);menuBar.add(formMenu);menuBar.add(aboutMenu);setJMenuBar(menuBar);//创建两个框架，用作查找和替换foundFrame=new JFrame();replaceFrame=new JFrame();//创建两个文本框textField1=new JTextField(15);textField2=new JTextField(15);startButton=new JButton("开始");startButton.addActionListener(listener);replaceButton=new JButton("替换为");replaceButton.addActionListener(listener);reallButton=new JButton("全部替换");reallButton.addActionListener(listener);}//创建菜单项事件监听器ActionListener listener=new ActionListener() {public void actionPerformed(ActionEvent e) {String name=e.getActionCommand();if(e.getSource() instanceof JMenuItem){if("新建".equals(name)){textArea.setText("");file=null;}if("打开".equals(name)){if(file!=null){fileChooser.setSelectedFile(file);}intreturnVal=fileChooser.showOpenDialog(NotePad.this);if(returnVal==JFileChooser.APPROVE_OPTION){file=fileChooser.getSelectedFile();}try{FileReader reader=new FileReader(file);int len=(int)file.length();char[] array=new char[len];reader.read(array,0,len);reader.close();textArea.setText(new String(array));}catch(Exception e_open){e_open.printStackTrace();}}}if("保存".equals(name)){if(file!=null){fileChooser.setSelectedFile(file);}intreturnVal=fileChooser.showSaveDialog(NotePad.this);if(returnVal==JFileChooser.APPROVE_OPTION){file=fileChooser.getSelectedFile();}try{FileWriter writer=new FileWriter(file);writer.write(textArea.getText());writer.close();}catch (Exception e_save) {e_save.getStackTrace();}}if("退出".equals(name)){System.exit(0);}if("剪切".equals(name)){textArea.cut();}if("复制".equals(name)){textArea.copy();}if("粘贴".equals(name)){textArea.paste();}if("查找".equals(name)){value=textArea.getText();foundFrame.add(textField1,BorderLayout.CENTER);foundFrame.add(startButton,BorderLayout.SOUTH);foundFrame.setLocation(300,300);foundFrame.setTitle("查找");foundFrame.pack();foundFrame.setVisible(true);foundFrame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE );}if("替换".equals(name)){value=textArea.getText();JLabel label1=new JLabel("查找内容:");JLabel label2=new JLabel("替换为:");JPanel panel1=new JPanel();panel1.setLayout(new GridLayout(2,2));JPanel panel2=new JPanel();panel2.setLayout(new GridLayout(1,3));replaceFrame.add(panel1,BorderLayout.NORTH);replaceFrame.add(panel2,BorderLayout.CENTER);panel1.add(label1);panel1.add(textField1);panel1.add(label2);panel1.add(textField2);panel2.add(startButton);panel2.add(replaceButton);panel2.add(reallButton);replaceFrame.setTitle("替换");replaceFrame.setLocation(300,300);replaceFrame.pack();replaceFrame.setVisible(true);replaceFrame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLO SE);}if("开始".equals(name)||"下一个".equals(name)){String temp=textField1.getText();int s=value.indexOf(temp,start);if(value.indexOf(temp,start)!=-1){textArea.setSelectionStart(s);textArea.setSelectionEnd(s+temp.length());textArea.setSelectedTextColor(Color.GREEN);start=s+1;startButton.setText("下一个");}else {JOptionPane.showMessageDialog(foundFrame, "查找完毕!", "提示", 0,new ImageIcon("icons\\search.gif"));foundFrame.dispose();}}if("替换为".equals(name)){String temp=textField1.getText();int s=value.indexOf(temp,start);if(value.indexOf(temp,start)!=-1){textArea.setSelectionStart(s);textArea.setSelectionEnd(s+temp.length());textArea.setSelectedTextColor(Color.GREEN);start=s+1;textArea.replaceSelection(textField2.getText());}else {JOptionPane.showMessageDialog(foundFrame, "查找完毕!", "提示", 0,new ImageIcon("icons\\search.gif"));foundFrame.dispose();}}if("全部替换".equals(name)){String temp=textArea.getText();temp=temp.replaceAll(textField1.getText(),textField2.getTex t());textArea.setText(temp);}if("全选".equals(name)){textArea.selectAll();}if("字体".equals(name)){FontDialog fontDialog=newFontDialog(NotePad.this);fontDialog.setVisible(true);if(textArea.getFont()!=fontDialog.getFont()){textArea.setFont(fontDialog.getFont());}}if("记事本……".equals(name)){AboutDialog aboutDialog=newAboutDialog(NotePad.this);aboutDialog.setVisible(true);}}};//创建字体设置对话面板，并添加相应事件监听器class FontDialog extends JDialog implements ItemListener, ActionListener, WindowListener{public JCheckBox Bold=new JCheckBox("Bold",false);public JCheckBox Italic=new JCheckBox("Italic",false);public List Size,Name;public int FontName;public int FontStyle;public int FontSize;public JButton OK=new JButton("OK");public JButton Cancel=new JButton("Cancel");public JTextArea Text=new JTextArea("字体预览文本域\n0123456789\nAaBbCcXxYyZz");public FontDialog(JFrame owner) {super(owner,"字体设置",true);GraphicsEnvironmentg=GraphicsEnvironment.getLocalGraphicsEnvironment();String name[]=g.getAvailableFontFamilyNames();Name=new List();Size=new List();FontName=0;FontStyle=0;FontSize=8;int i=0;Name.add("Default Value");for(i=0;i<name.length;i++)Name.add(name[i]);for(i=8;i<257;i++)Size.add(String.valueOf(i));this.setLayout(null);this.setBounds(250,200,480, 306);this.setResizable(false);OK.setFocusable(false);Cancel.setFocusable(false);Bold.setFocusable(false);Italic.setFocusable(false);Name.setFocusable(false);Size.setFocusable(false);Name.setBounds(10, 10, 212, 259);this.add(Name);Bold.setBounds(314, 10, 64, 22);this.add(Bold);Italic.setBounds(388, 10, 64, 22);this.add(Italic);Size.setBounds(232, 10, 64, 259);this.add(Size);Text.setBounds(306, 40, 157, 157);this.add(Text);OK.setBounds(306, 243, 74, 26);this.add(OK);Cancel.setBounds(390, 243, 74, 26);this.add(Cancel);Name.select(FontName);Size.select(FontSize);Text.setFont(getFont());Name.addItemListener(this);Size.addItemListener(this);Bold.addItemListener(this);Italic.addItemListener(this);OK.addActionListener(this);Cancel.addActionListener(this);this.addWindowListener(this);}public void itemStateChanged(ItemEvent e) {Text.setFont(getFont());}public void actionPerformed(ActionEvent e) {if(e.getSource()==OK){FontName=Name.getSelectedIndex();FontStyle=getStyle();FontSize=Size.getSelectedIndex();this.setVisible(false);}else cancel();}public void windowClosing(WindowEvent e) {cancel();}public Font getFont(){if(Name.getSelectedIndex()==0) return new Font("新宋体",getStyle(),Size.getSelectedIndex()+8);else return newFont(Name.getSelectedItem(),getStyle(),Size.getSelectedIndex() +8);}public void cancel(){Name.select(FontName);Size.select(FontSize);setStyle();Text.setFont(getFont());this.setVisible(false);}public void setStyle(){if(FontStyle==0 || FontStyle==2)Bold.setSelected(false);else Bold.setSelected(true);if(FontStyle==0 || FontStyle==1)Italic.setSelected(false);else Italic.setSelected(true);}public int getStyle(){int bold=0,italic=0;if(Bold.isSelected()) bold=1;if(Italic.isSelected()) italic=1;return bold+italic*2;}public void windowActivated(WindowEvent arg0) {}public void windowClosed(WindowEvent arg0) {}public void windowDeactivated(WindowEvent arg0) {}public void windowDeiconified(WindowEvent arg0) {}public void windowIconified(WindowEvent arg0) {}public void windowOpened(WindowEvent arg0) {} }//创建关于对话框class AboutDialog extends JDialog implements ActionListener{ public JButton OK,Icon;public JLabel Name,Version,Author,Java;public JPanel Panel;AboutDialog(JFrame owner) {super(owner,"关于",true);OK=new JButton("OK");Icon=new JButton(new ImageIcon("icons\\edit.gif"));Name=new JLabel("Notepad");Version=new JLabel("Version 1.0");Java=new JLabel("JRE Version 6.0");Author=new JLabel("Copyright (c) 11-5-2012 By Jianmin Chen");Panel=new JPanel();Color c=new Color(0,95,191);Name.setForeground(c);Version.setForeground(c);Java.setForeground(c);Author.setForeground(c);Panel.setBackground(Color.white);OK.setFocusable(false);this.setBounds(250,200,280, 180);this.setResizable(false);this.setLayout(null);Panel.setLayout(null);OK.addActionListener(this);Icon.setFocusable(false);Icon.setBorderPainted(false);Author.setFont(new Font(null,Font.PLAIN,11));Panel.add(Icon);Panel.add(Name);Panel.add(Version);Panel.add(Author);Panel.add(Java);this.add(Panel);this.add(OK);Panel.setBounds(0, 0, 280, 100);OK.setBounds(180, 114, 72, 26);Name.setBounds(80, 10, 160, 20);Version.setBounds(80, 27, 160, 20);Author.setBounds(15, 70, 250, 20);Java.setBounds(80, 44, 160, 20);Icon.setBounds(16, 14, 48, 48);}public void actionPerformed(ActionEvent e) { this.setVisible(false);}}}//创建记事本public class ChenJianmin {public static void main(String[] args){EventQueue.invokeLater(new Runnable() {public void run() {NotePad notePad=new NotePad();notePad.setTitle("记事本");notePad.setVisible(true);notePad.setBounds(100,100,800,600);notePad.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);}});}}。