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/** * 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

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

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);	    }	  } 	  	}