Java记事本程序源代码(共18页).doc

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1、精选优质文档-倾情为你奉上import java.awt.CheckboxMenuItem;import java.awt.Color;import java.awt.Container;import java.awt.FileDialog;import java.awt.FlowLayout;import java.awt.Font;import java.awt.GraphicsEnvironment;import java.awt.Menu;import java.awt.MenuBar;import java.awt.MenuItem;import java.awt.MenuShort

2、cut;import java.awt.TextArea;import java.awt.Toolkit;import java.awt.Window;import java.awt.datatransfer.Clipboard;import java.awt.datatransfer.DataFlavor;import java.awt.datatransfer.StringSelection;import java.awt.datatransfer.Transferable;import java.awt.datatransfer.UnsupportedFlavorException;im

3、port java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.KeyEvent;import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.File;import java.io.FileNotFoundException;import java.i

4、o.FileReader;import java.io.FileWriter;import java.io.IOException;import java.util.logging.Level;import java.util.logging.Logger;import javax.swing.JButton;import javax.swing.JColorChooser;import javax.swing.JComboBox;import javax.swing.JDialog;import javax.swing.JFileChooser;import javax.swing.JFra

5、me;import javax.swing.JLabel;import javax.swing.JOptionPane;import javax.swing.JPanel;import javax.swing.JTextField;public class notebook / 记事本的具体实现类 private static final long serialVersionUID = 1L; private TextArea content; private String filePath = ;/先让路径为空 Color color=Color.red; Toolkit toolKit =

6、 Toolkit.getDefaultToolkit(); Clipboard clipboard = toolKit.getSystemClipboard(); public notebook() /创建一个JFrame对象；并设置相关属性 final JFrame jf = new JFrame(我的记事本); jf.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE); jf.setBounds(100,100,500,500); jf.setResizable(true); jf.setVisible(true); /创建菜单栏 Me

7、nuBar menu = new MenuBar(); jf.setMenuBar(menu); /创建并添加文本框 content = new TextArea(,50,50,TextArea.SCROLLBARS_VERTICAL_ONLY); jf.add(content); content.setVisible(true); content.requestFocusInWindow(); /菜单栏添加内容 Menu filemenu = new Menu(文件（F）); Menu editmenu = new Menu(编辑（E）); Menu formatmenu = new Men

8、u(格式（O）); Menu viewmenu = new Menu(查看（V）); Menu helpmenu = new Menu(帮助（H）); menu.add(filemenu); menu.add(editmenu); menu.add(formatmenu); menu.add(viewmenu); menu.add(helpmenu); /创建文件菜单上的各个菜单项并添加到菜单上 MenuItem newitem = new MenuItem(新建（N）); newitem.setShortcut(new MenuShortcut(KeyEvent.VK_N,false); f

9、ilemenu.add(newitem); MenuItem openitem = new MenuItem(打开（O）); openitem.setShortcut(new MenuShortcut(KeyEvent.VK_O,false); filemenu.add(openitem); MenuItem saveitem = new MenuItem(保存（S）); saveitem.setShortcut(new MenuShortcut(KeyEvent.VK_S,false); filemenu.add(saveitem); MenuItem saveasitem = new Me

10、nuItem(另存为（A）); saveasitem.setShortcut(new MenuShortcut(KeyEvent.VK_A,false); filemenu.add(saveasitem); MenuItem setitem = new MenuItem(页面设置（U）); setitem.setShortcut(new MenuShortcut(KeyEvent.VK_U,false); filemenu.add(setitem); setitem.setEnabled(false); MenuItem printitem = new MenuItem(打印（P）); pri

11、ntitem.setShortcut(new MenuShortcut(KeyEvent.VK_P,false); filemenu.add(printitem); printitem.setEnabled(false); filemenu.addSeparator(); MenuItem exititem = new MenuItem(退出（X）); exititem.setShortcut(new MenuShortcut(KeyEvent.VK_X,false); filemenu.add(exititem); /添加监听器来实现文件菜单上的各个菜单项的功能 /新建菜单项的功能实现 ne

12、witem.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) String con = content.getText(); if(!con.equals()/文本域里文本不为空 int result = JOptionPane.showConfirmDialog( null, (是否要保存？),(保存文件.),JOptionPane.YES_NO_CANCEL_OPTION); if(result = JOptionPane.NO_OPTION)/不保存 content.setTe

13、xt(); else if(result = JOptionPane.CANCEL_OPTION)/取消新建 else if(result = JOptionPane.YES_OPTION)/选择保存 JFileChooser jfc = new JFileChooser();/用于选择保存路径的文件名 int bcf = jfc.showSaveDialog(jf); if(bcf = JFileChooser.APPROVE_OPTION) try /保存文件 BufferedWriter bfw = new BufferedWriter( new FileWriter(new File(

14、jfc.getSelectedFile().getAbsolutePath()+.txt); filePath = jfc.getSelectedFile().getAbsolutePath()+.txt;/获取文件保存的路径 bfw.write(con);/向文件写出数据 bfw.flush(); bfw.close();/关闭输出流 catch (IOException ex) Logger.getLogger(notebook.class.getName().log(Level.SEVERE, null, ex); new notebook();/新建文本文件 ); /打开菜单项的功能实

15、现 openitem.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) /JFileChooser jfile = new JFileChooser();/FileNameExtensionFilter filter = new FileNameExtensionFilter(*.txt,txt);/jfile.setFileFilter(filter);/jfile.setVisible(true);/int returnval = jfile.showOpenDialog(jfi

16、le);/filePath = jfile.getDialogTitle()+jfile.getSelectedFile().getName();/System.out.println(jfile.getSelectedFile();FileDialog dialog = new FileDialog(new JFrame(),打开.,FileDialog.LOAD);dialog.setVisible(true);filePath = dialog.getDirectory() + dialog.getFile(); System.out.println(filePath);File fil

17、e = new File(filePath);BufferedReader br = null;StringBuilder sb = new StringBuilder();trybr = new BufferedReader (new FileReader(file);String str = null;while (str = br.readLine() != null)sb.append(str).append(n);content.setText(sb.toString();catch(FileNotFoundException e1)e1.printStackTrace();catc

18、h(IOException e1)e1.printStackTrace();finallyif(br != null)trybr.close();catch(IOException e1)e1.printStackTrace(); ); /保存菜单项的功能实现 saveitem.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) /FileDialog dialog = new FileDialog(new JFrame(),保存.,FileDialog.SAVE);/dialog.s

19、etVisible(true);/filePath = dialog.getDirectory() + dialog.getFile();/File file = new File(filePath);/BufferedWriter bw = null;/try/bw = new BufferedWriter(new FileWriter(file);/bw.write(content.getText();/catch(FileNotFoundException e1)/e1.printStackTrace();/catch(IOException e1)/e1.printStackTrace

20、();/finally/if(bw != null)/try/bw.close();/catch(IOException e1)/e1.printStackTrace();/FileDialog dialog = new FileDialog(new JFrame(),保存.,FileDialog.SAVE);dialog.setVisible(true);filePath = dialog.getDirectory() + dialog.getFile();if(filePath.equals()/没有路径时，就另存为 JFileChooser jfc = new JFileChooser(

21、);/用于选择保存路径的文件名 int bcf = jfc.showSaveDialog(jf);/弹出保存窗口 if(bcf = JFileChooser.APPROVE_OPTION) try /保存文件 BufferedWriter bfw = new BufferedWriter( new FileWriter(new File(jfc.getSelectedFile().getAbsolutePath()+.txt); filePath = jfc.getSelectedFile().getAbsolutePath(); bfw.write(content.getText();/向文

22、件写出数据 bfw.flush(); bfw.close();/关闭输出流 catch (IOException ex) Logger.getLogger(notebook.class.getName().log(Level.SEVERE, null, ex); else/路径不为空时，保存在原来的路径下 try /保存文件 BufferedWriter bfw = new BufferedWriter( new FileWriter( new File(filePath); bfw.write(content.getText();/向文件写出数据 bfw.flush(); bfw.close

23、();/关闭输出流 catch (IOException ex) Logger.getLogger(notebook.class.getName().log(Level.SEVERE, null, ex); ); /另存为菜单项的功能实现 saveasitem.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) JFileChooser jfc = new JFileChooser();/用于选择保存路径的文件名 int bcf = jfc.showSaveDialog(jf);/弹出

24、保存窗口 if(bcf = JFileChooser.APPROVE_OPTION) try /保存文件 BufferedWriter bfw = new BufferedWriter( new FileWriter(new File(jfc.getSelectedFile().getAbsolutePath()+.txt); filePath = jfc.getSelectedFile().getAbsolutePath(); bfw.write(content.getText();/向文件写出数据 bfw.flush(); bfw.close();/关闭输出流 catch (IOExcep

25、tion ex) Logger.getLogger(notebook.class.getName().log(Level.SEVERE, null, ex); ); /页面设置菜单项的功能实现 setitem.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) ); /打印菜单项的功能实现 printitem.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) ); /退出菜单

26、项的功能实现 exititem.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) Object options = 是的，我要退出, 不好意思，点错了 ;int option = JOptionPane.showOptionDialog(null, 您确定要退出吗？, 退出提示.,JOptionPane.OK_CANCEL_OPTION,JOptionPane.WARNING_MESSAGE, null,options, options0); if(option = JOptionP

27、ane.OK_OPTION) System.exit(0); ); /创建编辑菜单上的各个菜单项并添加到菜单上 MenuItem undoitem = new MenuItem(撤销（U）); undoitem.setShortcut(new MenuShortcut(KeyEvent.VK_Z,false); editmenu.add(undoitem); MenuItem cutitem = new MenuItem(剪切（T）); cutitem.setShortcut(new MenuShortcut(KeyEvent.VK_X,false); editmenu.add(cutitem

28、); MenuItem copyitem = new MenuItem(复制（C）); copyitem.setShortcut(new MenuShortcut(KeyEvent.VK_C,false); editmenu.add(copyitem); MenuItem pasteitem = new MenuItem(粘贴（P）); pasteitem.setShortcut(new MenuShortcut(KeyEvent.VK_V,false); editmenu.add(pasteitem); MenuItem deleteitem = new MenuItem(删除（L）); d

29、eleteitem.setShortcut(new MenuShortcut(KeyEvent.VK_DELETE,false); editmenu.add(deleteitem); editmenu.addSeparator(); MenuItem finditem = new MenuItem(查找（F）); finditem.setShortcut(new MenuShortcut(KeyEvent.VK_F,false); editmenu.add(finditem); MenuItem nextitem = new MenuItem(查找下一个（N）); nextitem.setSh

30、ortcut(new MenuShortcut(KeyEvent.VK_3,false); editmenu.add(nextitem); MenuItem replaceitem = new MenuItem(替换（R）); replaceitem.setShortcut(new MenuShortcut(KeyEvent.VK_H,false); editmenu.add(replaceitem); MenuItem turntoitem = new MenuItem(转到（G）); turntoitem.setShortcut(new MenuShortcut(KeyEvent.VK_G

31、,false); editmenu.add(turntoitem); editmenu.addSeparator(); /复选菜单项 Menu choicemenu = new Menu(选择(C); MenuItem allitem = new MenuItem(全选（A）); allitem.setShortcut(new MenuShortcut(KeyEvent.VK_A,false); choicemenu.add(allitem); MenuItem fanxiangitem = new MenuItem(反向选择(B); fanxiangitem.setShortcut(new

32、MenuShortcut(KeyEvent.VK_B,false); choicemenu.add(fanxiangitem); MenuItem chieseitem = new MenuItem(选择汉字（C）); chieseitem.setShortcut(new MenuShortcut(KeyEvent.VK_C,false); choicemenu.add(chieseitem); editmenu.add(choicemenu); /编辑菜单项的时间/日期项 MenuItem dateitem = new MenuItem(时间/日期（D）); dateitem.setShor

33、tcut(new MenuShortcut(KeyEvent.VK_5,false); editmenu.add(dateitem); /添加监听器来实现编辑菜单上的各个菜单项的功能 /撤销菜单项的功能实现 undoitem.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) ); /剪切菜单项的功能实现 cutitem.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) St

34、ring text = content.getSelectedText();StringSelection selection = new StringSelection(text);clipboard.setContents(selection, null);if(text.length() = 0)return;elsecontent.replaceRange(, content.getSelectionStart(),content.getSelectionEnd(); ); /复制菜单项的功能实现 copyitem.addActionListener(new ActionListene

35、r()public void actionPerformed(ActionEvent e) String text = content.getSelectedText();StringSelection selection = new StringSelection(text);clipboard.setContents(selection, null); ); /粘贴菜单项的功能实现 pasteitem.addActionListener(new ActionListener()public void actionPerformed(ActionEvent e) Transferable c

36、ontents = clipboard.getContents(this);String str =null;try str = (String) contents.getTransferData(DataFlavor.stringFlavor); catch (UnsupportedFlavorException e1) e1.printStackTrace(); catch (IOException e1) e1.printStackTrace();if (str = null)return;try content.replaceRange(str,content.getSelectionStart(),content.getSelectionEnd(); catch (Exception e1) e1.printStackTrace(); ); /删除菜单项的功能实现 deleteitem.addActionListener(new ActionListener()public void actionPerformed(A