Java 记事本代码

 

源文件、文档说明、可运行的jar文件下载地址http://download.csdn.net/source/1852333、

Java 记事本代码（分类实现）上

Java 记事本代码 （分类实现）下

/** * NoteBook * * @versionliujunguang * @version 1.00 09/10/25 */ public class NoteBook { public static void main(String[] args) { // Create application frame. NoteBookFrame frame = new NoteBookFrame(); // Show frame frame.setVisible(true); } }  

import java.awt.*; /** * NoteBook-OpenClass. * * @liujunguang * @version 1.00 09/10/28 */ class SeeClass extends Frame { NoteBookFrame notebookframe = null; SeeClass(NoteBookFrame p) { notebookframe = p; } public void Modo() { System.out.println("状态栏"); } }  

//编辑类中的查找选项的实现 import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.lang.*;//String 类 import javax.swing.JOptionPane; class SearchFrame extends JFrame implements ActionListener,ItemListener//单选按钮事件接口 { JLabel label1,label2,label3; JButton but1,but2,but3,but4; JTextField textfield,text; JRadioButton radiobutton1,radiobutton2; ButtonGroup group1; JCheckBox box1; NoteBookFrame notebookframe = null; String sub1="",sub2=""; int n=-1; boolean isup = false;//判断是否是最后一个找到的内容时用到 boolean direction = true ;//判断查找方向 向下为 true SearchFrame(NoteBookFrame p) { notebookframe = p; label1 = new JLabel("查找内容(N):"); label2 = new JLabel("方向"); label3 = new JLabel("替换为(P)"); but1 = new JButton("查找下一个(F)"); but2 = new JButton(" 取 消 "); but3 = new JButton(" 替 换 "); but4 = new JButton(" 转 到 "); textfield = new JTextField(15); text = new JTextField(15); radiobutton1 = new JRadioButton("向下(U)",true); radiobutton2 = new JRadioButton("向上(D)"); group1 = new ButtonGroup(); //创建组件 box1 = new JCheckBox("区分大小写(C)"); Container con = getContentPane(); con.setLayout(null);//设置布局为空 group1.add(radiobutton1); group1.add(radiobutton2);//将单选按钮加到按钮组中 con.add(label1);//查找 label1.setBounds(10,10,85,25); con.add(label3);//替换为 label3.setBounds(10,45,85,25); con.add(textfield);//文本 textfield.setBounds(90,10,180,25); con.add(text);//文本 text.setBounds(90,45,180,25); con.add(but1);//查找下一个 but1.setBounds(280,10,120,25); con.add(label2);//方向 label2.setBounds(135,80,50,25); con.add(box1); box1.setBounds(10,115,120,25); con.add(radiobutton1);//向下 radiobutton1.setBounds(130,115,70,25); con.add(radiobutton2);//向上 radiobutton2.setBounds(200,115,70,25); con.add(but2);//取消 but2.setBounds(280,115,120,25); con.add(but3);//替换 but3.setBounds(280,45,120,25); con.add(but4);//转到 but4.setBounds(280,80,120,25); but1.addActionListener(this); but2.addActionListener(this); but3.addActionListener(this); but4.addActionListener(this); box1.addItemListener(this); textfield.addActionListener(this); text.addActionListener(this); radiobutton1.addItemListener(this); radiobutton2.addItemListener(this); //注册监听 setBounds(500,300,420,180); setVisible(false); setTitle("查找"); validate(); } public void actionPerformed(ActionEvent e) { sub1 = notebookframe.textarea.getText();//得到文本区中的文本 sub2 = textfield.getText();//得到文本框中的文本 if(!isup) //如果不区分大小写（默认不区分大小写） { sub1 = sub1.toLowerCase();//将sub1转换成小写 sub2 = sub2.toLowerCase();//将sub2转换成小写 } if(!direction) n = sub1.lastIndexOf(sub2);//在文本区中查找文本框中的内容 else n = sub1.indexOf(sub2);//在文本区中查找文本框中的内容 if(e.getSource() == but1||e.getSource() == textfield)//查找下一个 { if(n!=-1) { notebookframe.toFront();//如果此窗口是可见的，则将此窗口置于前端，并可以将其设为焦点 Window notebookframe.textarea.select(n,n+sub2.length());//选中查找的内容 this.setVisible(false); } else { JOptionPane.showMessageDialog(this,"所指定的文本没有找到！","记事本",JOptionPane.WARNING_MESSAGE); } } if(e.getSource() == but2)//取消 { this.setVisible(false); } if(e.getSource() == but4)//转到 { int i=0,j=1; char ch[]; try{ int raw = Integer.parseInt(textfield.getText());//得到文本框中的文本 String s = notebookframe.textarea.getText(); ch = new char[s.length()]; s.getChars(0,s.length()-1,ch,0); while(j<raw) { i++; if(ch[i] == \'/n\') {j++;} if(i == s.length())break; } if(raw == 1) //转到第一行 notebookframe.textarea.setCaretPosition(0); else notebookframe.textarea.setCaretPosition(i+1);//转到指定行 this.setVisible(false); } catch(Exception a){ JOptionPane.showMessageDialog(this,"你输入的位置不对无法到达！","记事本",JOptionPane.WARNING_MESSAGE); } } if(e.getSource() == but3)//替换 { if(n != -1) { String sub3 = text.getText(); notebookframe.textarea.select(n,n+sub2.length());//选中查找的内容 notebookframe.textarea.replaceRange(sub3,n,n+sub2.length());//替换选中位置的文本 sub1 = notebookframe.textarea.getText();//得到文本区中的文本 sub2 = textfield.getText();//得到文本框中的文本 if(!isup) //如果不区分大小写（默认不区分大小写） { sub1 = sub1.toLowerCase();//将sub1转换成小写 sub2 = sub2.toLowerCase();//将sub2转换成小写 } if(!direction) n = sub1.lastIndexOf(sub2);//在文本区中查找最后出现的文本框中的内容 else n = sub1.indexOf(sub2);//在文本区中查找最先出现的文本框中的内容 notebookframe.toFront();//如果此窗口是可见的，则将此窗口置于前端，并可以将其设为焦点 Window if(n!=-1 ) { notebookframe.textarea.select(n,n+sub2.length());//选中查找内容 } else JOptionPane.showMessageDialog(this,"所指定的文本没有找到！","记事本",JOptionPane.WARNING_MESSAGE); } else { JOptionPane.showMessageDialog(this,"所指定的文本没有找到无法替换！","记事本",JOptionPane.WARNING_MESSAGE); } } } public void nextShear()//查找下一个 菜单项对应的 { if(n!=-1) { sub1 = notebookframe.textarea.getText().substring(n+sub2.length());//得到文本区的子串 if(!isup) //如果不区分大小写（默认不区分大小写） { sub1 = sub1.toLowerCase();//将sub1转换成小写 sub2 = sub2.toLowerCase();//将sub2转换成小写 } if(sub1.indexOf(sub2)!=-1) { n = n+sub2.length()+sub1.indexOf(sub2);//得到查找内容在文本区中的位置 notebookframe.textarea.select(n,n+sub2.length());//选中查找内容 } else JOptionPane.showMessageDialog(this,"所指定的文本没有找到！","记事本",JOptionPane.WARNING_MESSAGE); } else JOptionPane.showMessageDialog(this,"所指定的文本没有找到！","记事本",JOptionPane.WARNING_MESSAGE); } public void itemStateChanged(ItemEvent ee) { if(ee.getSource() == box1) { if(box1.isSelected()) { isup = true ; } else isup = false ; } if(ee.getSource() == radiobutton1) { if(radiobutton1.isSelected()) { direction = true ; } } if(ee.getSource() == radiobutton2) { if(radiobutton2.isSelected()) { direction = false; } } } }  

import java.awt.*; import java.io.*; import java.awt.event.*; import javax.swing.JOptionPane; /** * NoteBook-OpenClass. * @liujunguang * @version 1.00 09/10/24 */ class OpenClass extends Frame { NoteBookFrame notebookframe = null; FileDialog filedialog_open,filedialog_save; File file1,file2; //文件字节流对象 FileReader file_reader;//文件字符流对象 FileWriter tofile; BufferedReader in ;//文件行读取 写入对象 BufferedWriter out; String s; boolean issave = false;//用于判断是否是第一次保存 String filesave = null,savename = null; //用于存放文件地址 和文件名 String fileopen = null,filename = null;//用于存放打开文件地址 和文件名 PrintJob p=null;//声明一个要打印的对象 Graphics g=null;//要打印的对象 OpenClass(NoteBookFrame p ) { notebookframe = p; filedialog_open = new FileDialog(notebookframe,"打开文件对话框",FileDialog.LOAD); filedialog_save = new FileDialog(notebookframe,"保存文件对话框",FileDialog.SAVE); filedialog_open.setVisible(false); filedialog_save.setVisible(false); //notebookframe = new NoteBookFrame(); filedialog_open.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { filedialog_open.setVisible(false); } } );//打开文件对话框适配器 filedialog_save.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { filedialog_save.setVisible(false); } } );//保存文件对话框适配器 } public void New() { if(!notebookframe.textarea.getText().equals("")) { int n = JOptionPane.showConfirmDialog(notebookframe,"是否保存原有的信息？","询问对话框",JOptionPane.YES_NO_OPTION); if(n == JOptionPane.YES_OPTION) { Save(); } } notebookframe.textarea.setText(""); } public void Open() { if(!notebookframe.textarea.getText().equals("")) { int n = JOptionPane.showConfirmDialog(notebookframe,"是否保存原有的信息？","询问对话框",JOptionPane.YES_NO_OPTION); if(n == JOptionPane.YES_OPTION) { Save(); } if(n == JOptionPane.NO_OPTION) { notebookframe.textarea.setText(""); } } filedialog_open.setVisible(true); fileopen = filedialog_open.getDirectory();//返回文件对话框中显示的文件所属的目录 filename = filedialog_open.getFile();//返回当前文件对话框中显示的文件名的字符串表示 如果不存在就返回NULL if(filename!=null)// 判断打开的文件是否存在 { try { file1 = new File(fileopen,filename); if(file1.isFile())//判断文件是否是正常的文件而不是目录 { notebookframe.textarea.setText(""); file_reader = new FileReader(file1); in = new BufferedReader(file_reader);//每次读取一行 while((s = in.readLine())!=null) notebookframe.textarea.append(s+\'/n\'); in.close(); file_reader.close(); } } catch (IOException e2){ System.out.println(filename); } } } public void Save() { if(!issave&&filename == null) { filedialog_save.setVisible(true); filesave = filedialog_save.getDirectory(); savename = filedialog_save.getFile()+".txt"; issave = true; } if(filename != null||!savename.equals(null+".txt")) { try{ if(filename!= null){filesave = fileopen; savename = filename;} file2 = new File(filesave,savename); tofile = new FileWriter(file2); out = new BufferedWriter(tofile); out.write(notebookframe.textarea.getText(),0,notebookframe.textarea.getText().length()); out.close(); tofile.close(); } catch (IOException e2){ } } } public void AsSave() { int n=-2; filedialog_save.setVisible(true); String filesave = filedialog_save.getDirectory(); String savename = filedialog_save.getFile()+".txt"; if(!savename.equals(null+".txt")) { try{ file2 = new File(filesave,savename); tofile = new FileWriter(file2); out = new BufferedWriter(tofile); out.write(notebookframe.textarea.getText(),0,notebookframe.textarea.getText().length()); out.close(); tofile.close(); } catch (IOException e2){ } } } public void SetUp() { JOptionPane.showMessageDialog(this,"在打印的时候用到！","警告对话框",JOptionPane.WARNING_MESSAGE); } public void Print() { try{ p = getToolkit().getPrintJob(notebookframe,"ok",null);//创建一个Printfjob 对象 p g = p.getGraphics();//p 获取一个用于打印的 Graphics 的对象 g.translate(120,200);//改变组建的位置 notebookframe.textarea.printAll(g); p.end();//释放对象 g } catch(Exception a){ } } }  

import java.awt.*; import java.awt.event.*; /** * NoteBook-BookFrame. * * @liujunguang * @version 1.00 09/10/24 */ class NoteBookFrame extends Frame implements ActionListener , KeyListener { TextArea textarea ; MenuBar menuBar; Menu Open,Edit,Formt,See,Help; MenuItem NewFile,OpenFile,Save,AsSave,SetUp,Print,Exit; MenuItem Repeal,Cut,Copy,Stick,Delete,Lookup,Lookupnext,Exchange,Goto,All,Timedate; MenuItem Rand,FontSize,Modo,MainHelp,AboutBook; OpenClass openclass ; EditClass editclass ; FormateClass formateclass; SeeClass seeclass; HelpClass helpclass; public NoteBookFrame() { textarea = new TextArea(40,500); openclass = new OpenClass(this); editclass = new EditClass(this); formateclass = new FormateClass(this); seeclass = new SeeClass(this); helpclass = new HelpClass(this); menuBar = new MenuBar(); //创建菜单条 Open = new Menu("打开(F)"); Edit = new Menu("编辑(E)"); Formt = new Menu("格式(O)"); See = new Menu("查看(V)"); Help = new Menu("帮助(H)"); //创建菜单 NewFile = new MenuItem("新建"); OpenFile = new MenuItem("打开"); Save = new MenuItem("保存"); AsSave = new MenuItem("另存为(A)... "); SetUp = new MenuItem("页面设置(U) "); Print = new MenuItem("打印(P) ..."); Exit = new MenuItem("退出(X)"); //开始菜单中的各菜单项 Repeal = new MenuItem("撤销(U)"); Cut= new MenuItem("剪切(T)"); Copy= new MenuItem("复制(C)"); Stick= new MenuItem("粘贴(P)"); Delete= new MenuItem("删除(L)Del"); Lookup= new MenuItem("查找(F)"); Lookupnext= new MenuItem("查找下一个(N) F3"); Exchange= new MenuItem("替换(R)"); Goto= new MenuItem("转到(G)"); All= new MenuItem("全选(A)"); Timedate= new MenuItem("时间/日期(D) F5"); //编辑菜单中的各菜单项 Rand = new MenuItem("自动换行(W) "); FontSize = new MenuItem("字体(F)... "); //格式菜单中的各菜单项 Modo = new MenuItem("状态栏(S)"); //查看菜单中的各菜单项 MainHelp = new MenuItem("帮助主题(H) "); AboutBook = new MenuItem("关于记事本(A) "); //帮助菜单中的各菜单项 Open.add(NewFile); Open.add(OpenFile); Open.add(Save); Open.add(AsSave); Open.addSeparator(); Open.add(SetUp); Open.add(Print); Open.addSeparator();//添加分割线 Open.add(Exit); //在打开菜单中加菜单项 Edit.add(Repeal); Edit.addSeparator(); Edit.add(Cut); Edit.add(Copy); Edit.add(Stick); Edit.add(Delete); Edit.addSeparator(); Edit.add(Lookup); Edit.add(Lookupnext); Edit.add(Exchange); Edit.add(Goto); Edit.addSeparator(); Edit.add(All); Edit.add(Timedate); //在编辑菜单中添加菜单项 Formt.add(Rand); Formt.add(FontSize); //格式菜单中添加菜单项 See.add(Modo); //查看菜单中添加菜单项 Help.add(MainHelp); Help.addSeparator(); Help.add(AboutBook); //帮助菜单中添加菜单项 menuBar.add(Open); menuBar.add(Edit); menuBar.add(Formt); menuBar.add(See); menuBar.add(Help); //菜单条中添加菜单 NewFile.setShortcut(new MenuShortcut(KeyEvent.VK_N)); OpenFile.setShortcut(new MenuShortcut(KeyEvent.VK_O)); Save.setShortcut(new MenuShortcut(KeyEvent.VK_S)); Print.setShortcut(new MenuShortcut(KeyEvent.VK_P)); Repeal.setShortcut(new MenuShortcut(KeyEvent.VK_Z)); Cut.setShortcut(new MenuShortcut(KeyEvent.VK_X)); Copy.setShortcut(new MenuShortcut(KeyEvent.VK_C)); Stick.setShortcut(new MenuShortcut(KeyEvent.VK_V)); Lookup.setShortcut(new MenuShortcut(KeyEvent.VK_F)); Exchange.setShortcut(new MenuShortcut(KeyEvent.VK_H)); Goto.setShortcut(new MenuShortcut(KeyEvent.VK_G)); All.setShortcut(new MenuShortcut(KeyEvent.VK_A)); //添加菜单项中的各项的快捷键 setTitle("记事本"); setMenuBar(menuBar);//窗口中添加菜单条 add(textarea); setBounds(500,150,400,400); textarea.addKeyListener(this); //注册文本域的键盘事件 NewFile.addActionListener(this); OpenFile.addActionListener(this); Save.addActionListener(this); AsSave.addActionListener(this); SetUp.addActionListener(this); Print.addActionListener(this); //注册监听打开菜单中的各项 Repeal.addActionListener(this); Cut.addActionListener(this); Copy.addActionListener(this); Stick.addActionListener(this); Delete.addActionListener(this); Lookup.addActionListener(this); Lookupnext.addActionListener(this); Exchange.addActionListener(this); Goto.addActionListener(this); All.addActionListener(this); Timedate.addActionListener(this); //注册监听编辑菜单中的各项 Rand.addActionListener(this); FontSize.addActionListener(this); //注册监听格式菜单中的各项 Modo.addActionListener(this); //注册监听查看菜单中的各项 MainHelp.addActionListener(this); AboutBook.addActionListener(this); //注册监听帮助菜单中的各项 // Add window listener. this.addWindowListener ( new WindowAdapter() { public void windowClosing(WindowEvent e) { NoteBookFrame.this.windowClosed(); } } ); // Add action listener.for the menu button Exit.addActionListener ( new ActionListener() { public void actionPerformed(ActionEvent e) { NoteBookFrame.this.windowClosed(); } } ); } /** * Shutdown procedure when run as an application. */ protected void windowClosed() { // TODO: Check if it is safe to close the application // Exit application. System.exit(0); } public void actionPerformed(ActionEvent e) { if(e.getSource() == NewFile){openclass.New();} if(e.getSource() == OpenFile){openclass.Open();} if(e.getSource() == Save){openclass.Save();} if(e.getSource() == AsSave){openclass.AsSave();} if(e.getSource() == SetUp){openclass.SetUp();} if(e.getSource() == Print){openclass.Print();} if(e.getSource() == Exit){System.out.println("退出");} //打开菜单事件的实现 if(e.getSource() == Repeal){editclass.Repeal();} if(e.getSource() == Cut){editclass.Cut();} if(e.getSource() == Copy){editclass.Copy();} if(e.getSource() == Stick){editclass.Stick();} if(e.getSource() == Delete){editclass.Delete();} if(e.getSource() == Lookup){editclass.LookUp();} if(e.getSource() == Lookupnext){editclass.LookUpNext();} if(e.getSource() == Exchange){editclass.Exchange();} if(e.getSource() == Goto){editclass.Goto();} if(e.getSource() == All){editclass.All();} if(e.getSource() == Timedate){editclass.TimeDate();} //编辑菜单的实现 if(e.getSource() == Rand){formateclass.Rand();} if(e.getSource() == FontSize){formateclass.FontSize();} //格式菜单的实现 if(e.getSource() ==Modo ){seeclass.Modo();} //查看菜单的实现 if(e.getSource() == MainHelp){helpclass.MainHeip();} if(e.getSource() == AboutBook){helpclass.AboutBook();} //帮助菜单的实现 } public void keyPressed(KeyEvent key)//处理按下某键时 { // 文本区的键盘事件的实现 } public void keyTyped(KeyEvent key){}//处理按下后又恢复的事件 public void keyReleased(KeyEvent key){} //恢复时要掉用的事件 }  

import java.awt.*; import javax.swing.JOptionPane;//警告对话框 /** * NoteBook-OpenClass. * * @liujunguang * @version 1.00 09/10/28 */ class HelpClass extends Frame { NoteBookFrame notebookframe = null; HelpClass(NoteBookFrame p) { notebookframe = p; } public void MainHeip() { JOptionPane.showMessageDialog(this,"记事本帮助文档！","记事本",JOptionPane.WARNING_MESSAGE); } public void AboutBook() { JOptionPane.showMessageDialog(notebookframe,"记事本"+"/n"+" 版本: 1.0.0"+"/n" +" 作者: 米林"+"/n" +" 时间: 2009/11/8","记事本",JOptionPane.WARNING_MESSAGE); } } 

import java.awt.*; /** * NoteBook-OpenClass. * * @liujunguang * @version 1.00 09/10/28 */ class FormateClass extends Frame { NoteBookFrame notebookframe = null; FontFrame font =null ;// 定义字体类的对象 Toolkit tool = null; Dimension dim = null; boolean ran = true; int n ; FormateClass(NoteBookFrame p) { notebookframe = p; tool = getToolkit(); dim = tool.getScreenSize(); font = new FontFrame(notebookframe); } public void Rand() { if(ran) { notebookframe.textarea.setColumns(1);//得到文本区的列数 System.out.println(notebookframe.getWidth()); notebookframe.Rand.setLabel("√自动换行"); ran = false; } //notebookframe.textarea.getRows();// 得到文本区的行数 //notebookframe.setBounds(0,0,dim.width,dim.height); else { notebookframe.textarea.setColumns(4); System.out.println(dim.width); ran = true; notebookframe.Rand.setLabel("自动换行"); } } public void FontSize() { font.setVisible(true); } }  

import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.JOptionPane; /** * NoteBook-OpenClass. * * @liujunguang * @version 1.00 09/10/28 */ class FontFrame extends JFrame implements ItemListener,ActionListener { JLabel label1,label2,label3,label4; JButton but1,but2;//按钮 JTextField text1,text2,text3,text4; List list1,list2,list3;//滚动列表 String fontname ;//字体名称 int fontstytle = Font.PLAIN;//字体式样 int fontsize = 12;//字体的大小 NoteBookFrame notebookframe = null; FontFrame(NoteBookFrame p) { notebookframe = p ; label1 = new JLabel("字体(F):"); label2 = new JLabel("字形(Y):"); label3 = new JLabel("大小(S):"); label4 = new JLabel("示例:"); but1 = new JButton("确 定"); but2 = new JButton("取 消"); text1 = new JTextField("Arial"); text2 = new JTextField("常规"); text3 = new JTextField("12"); text4 = new JTextField("AaBbCc"); text4.setHorizontalAlignment(JTextField.CENTER); list1 = new List(7,false);//可现 7 个，不可多选 list2 = new List(7,false); list3 = new List(7,false); GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();//计算机上字体可用的名称 String fontName[] = ge.getAvailableFontFamilyNames(); for(int i = 0 ;i<fontName.length;i++) { list1.add(fontName[i]); } list2.add("常规"); list2.add("粗体"); list2.add("斜体"); list2.add("粗斜体"); String fontSize[]={"8","9","10","11","12","13","14","16","18","20","22","24","26","28","36","48","72","初号", "小初","一号","小一","二号","小二","三号","小三","四号","小四","五号","小五","六号","小六","七号","八号"}; for(int i = 0 ;i<fontSize.length;i++) { list3.add(fontSize[i]); } list1.addItemListener(this); list2.addItemListener(this); list3.addItemListener(this); Container con = getContentPane(); con.setLayout(null);//设置布局为空 con.add(label1);//字体 label1.setBounds(20,10,60,20); con.add(label2);//字形 label2.setBounds(180,10,60,20); con.add(label3);//大小 label3.setBounds(300,10,60,20); con.add(label4);//示例 label4.setBounds(180,250,60,20); //标签的设定 con.add(but1); //确定 but1.addActionListener(this); but1.setBounds(400,35,70,20); con.add(but2);//取消 but2.addActionListener(this); but2.setBounds(400,65,70,20); //按钮的设定 con.add(text1); //字体 text1.setBounds(20,35,150,20); con.add(text2); //字形 text2.setBounds(180,35,110,20); con.add(text3);//大小 text3.setBounds(300,35,80,20); con.add(text4);//示例 text4.setBounds(180,275,200,60); text4.setEditable(false); //文本框的设定 con.add(list1); list1.setBounds(20,60,150,180); con.add(list2); list2.setBounds(180,60,110,180); con.add(list3); list3.setBounds(300,60,80,180); //文本域的设定 this.setVisible(false); setBounds(100,100,500,400); setTitle("字体"); validate(); } public void itemStateChanged(ItemEvent e) { if(e.getSource()==list1) { fontname = list1.getSelectedItem(); text1.setText(fontname); Font f = new Font(fontname,fontstytle,fontsize); text4.setFont(f); } if(e.getSource()==list2) { int index = list2.getSelectedIndex(); switch(index) { case 0: fontstytle = Font.PLAIN;break; case 1: fontstytle = Font.BOLD; break; case 2: fontstytle = Font.ITALIC;break; case 3: fontstytle = Font.BOLD + Font.ITALIC; break; } text2.setText(list2.getSelectedItem()); Font f = new Font(fontname,fontstytle,fontsize); text4.setFont(f); } if(e.getSource()==list3) { int index = list3.getSelectedIndex(); if(index<=16) fontsize = Integer.parseInt(list3.getSelectedItem()); switch(index) { case 17: fontsize = 100;break; case 18: fontsize = 90;break; case 19: fontsize = 80;break; case 20: fontsize = 60;break; case 21: fontsize = 50;break; case 22: fontsize = 40;break; case 23: fontsize = 30;break; case 24: fontsize = 20;break; case 25: fontsize = 18;break; case 26: fontsize = 16;break; case 27: fontsize = 12;break; case 28: fontsize = 11;break; case 29: fontsize = 9;break; case 30: fontsize = 8;break; case 31: fontsize = 7; } text3.setText(list3.getSelectedItem()); Font f = new Font(fontname,fontstytle,fontsize); text4.setFont(f); } } public void actionPerformed(ActionEvent ee) { if(ee.getSource()==but1) { Font f = new Font(fontname,fontstytle,fontsize); notebookframe.textarea.setFont(f); this.setVisible(false); } if(ee.getSource()==but2) { this.setVisible(false); } } }  

import java.awt.*; import java.io.*; import java.util.*; import java.awt.datatransfer.*;//剪切板的类 import java.text.SimpleDateFormat;//时间格式 import javax.swing.JOptionPane;//警告对话框 /** * NoteBook-OpenClass. * * @liujunguang * @version 1.00 09/10/28 */ class EditClass extends Frame { NoteBookFrame notebookframe = null; Date nowdate;//定义一个时间对象 Clipboard clipboard = null;//定义一个剪切板对象 SimpleDateFormat dateformat; SearchFrame search=null; EditClass(NoteBookFrame p) { notebookframe = p; nowdate = new Date(); search= new SearchFrame(notebookframe); clipboard = getToolkit().getSystemClipboard();//获得系统的剪切板 dateformat = new SimpleDateFormat("\'本地时间:\' yyyy年MM月dd日 E HH时mm分 "); } public void Repeal() { JOptionPane.showMessageDialog(this,"由于本人能力有限故还没有实现，请谅解！","记事本",JOptionPane.WARNING_MESSAGE); } public void Cut() { String temp = notebookframe.textarea.getSelectedText();//获得鼠标拖动选取的文本 StringSelection text = new StringSelection(temp);//把待剪切的文本传递给 text 对象 clipboard.setContents(text,null);//将文本放入剪切板中 int start = notebookframe.textarea.getSelectionStart();//获取选中文本的开始位置 int end = notebookframe.textarea.getSelectionEnd();//获取选中文本的结束位置 notebookframe.textarea.replaceRange("",start,end);//选中的区域用""替换 } public void Copy() { String temp = notebookframe.textarea.getSelectedText();//获得鼠标拖动选取的文本 StringSelection text = new StringSelection(temp);//把待剪切的文本传递给 text 对象 clipboard.setContents(text,null);//将文本放入剪切板中 } public void Stick() { Transferable contexts = clipboard.getContents(notebookframe);//获取剪切板中的内容 DataFlavor flavor = DataFlavor.stringFlavor;//剪切板的风格（系统的标准风格） if(contexts.isDataFlavorSupported(flavor))//判断风格java是否可用 { try{ String str = (String)contexts.getTransferData(flavor); int start = notebookframe.textarea.getSelectionStart();//获取选中文本的开始位置 int end = notebookframe.textarea.getSelectionEnd();//获取选中文本的结束位置 notebookframe.textarea.replaceRange(str,start,end);//替换光标所在位置的文本 } catch(Exception ee){} } } public void Delete() { String temp = notebookframe.textarea.getSelectedText();//获得鼠标拖动选取的文本 int start = notebookframe.textarea.getSelectionStart(); int end = notebookframe.textarea.getSelectionEnd(); notebookframe.textarea.replaceRange("",start,end);//选中的区域用""替换 } public void LookUp() { searchfor(); } public void LookUpNext() { if(!notebookframe.textarea.getText().equals("")) { search.nextShear(); } else { JOptionPane.showMessageDialog(this,"文本内容不为空时才能使用该功能！","记事本",JOptionPane.WARNING_MESSAGE); } } public void Exchange()//替换 { searchfor(); } public void Goto()//转到 { searchfor(); } public void All()//全选 { notebookframe.textarea.selectAll(); } public void TimeDate()//时间的获得 { notebookframe.textarea.append(dateformat.format(nowdate)); } public void searchfor()//为减少代码编写的 查找函数 { if(!notebookframe.textarea.getText().equals("")) { search.setVisible(true); } else { JOptionPane.showMessageDialog(this,"文本内容不为空时才能使用该功能！","记事本",JOptionPane.WARNING_MESSAGE); } } }